Table of Content

28 April 2014, Issue 2

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Integrated Management and Administration

Review of Study on Forest Resources Asset Management

FENG Shuqing, AI Chang

2014,(2):  1-6.  doi:10.13466/j.cnki.lyzygl.2014.02.001

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This paper reviews forest resource asset management,previous studies and their approaches based on relevant studies conducted in China since the 1980’s.We highlight the importance and necessity of forest resource asset management,in particular focus on China’s reforms in the field.Our findings may be of referential value for setting up a new forest resource management system in the future.

Considerations on Construction of the Dynamic Landscape and Forest Resource Monitoring System in Beijing

WANG Shan

2014,(2):  7-10.  doi:10.13466/j.cnki.lyzygl.2014.02.002

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Development of landscape and forest resource monitoring in Beijing was briefly reviewed at first.Then,some problems in the monitoring and data processing were analyzed.Thirdly,the objectives,monitoring items,technical routine and outcomes of the dynamic forest resource monitoring system were introduced.Finally,some suggestions for optimizing the method,improving the monitoring techniques and the data processing capacity were proposed.

Study on Compensation Standards of Requisitioned and Occupied Forest Land in Yunnan Province

CHEN Lixian

2014,(2):  11-14.  doi:10.13466/j.cnki.lyzygl.2014.02.003

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On the basis of compensation status of requisitioned and occupied forest land in Yunnan Province,existing problems were discussed in this paper,including low compensation standard,difficult compensation valuation,imbalance compensation of three terms,which did not reflect the market value and ignored the incremental benefits of forest land and so on.Therefore,the compensation standards were elaborated from aspects of work train of thought,basic principles,specific recommendations and safeguarding measures.

Research and Development Trends of Ecological Compensation Standard Issues of Forests in China

ZHANG Yuan, ZHI Ling

2014,(2):  15-20.  doi:10.13466/j.cnki.lyzygl.2014.02.004

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Based on the research of ecological compensation of forests in China,this paper analyzes ecological compensation standard issues of forests in detail and makes clear the forest ecological compensation standard factors and methods etc,.Combined with the current reality,the paper proposes the development trends of ecological compensation standard issues of forests,including the use of forest land rent theory,the forest compensation standards at different legal right levels and the necessity of interdisciplinary research.

Analysis on China’s Timber Import Risk

DIAO Gang, CHENG Baodong, LI Xiaoxiao, JU Yanfeng

2014,(2):  21-25.  doi:10.13466/j.cnki.lyzygl.2014.02.005

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with rapid development of Chinese economy and society,timber demand grows fast.Due to the limitation of domestic supply,foreign reliance extent of timber import gradually rises and timber import risk gradually goes up correspondingly.Based on the indexes of HHI and S-W,this paper formulates the indexes of timber import risk.The indexes includes risk status,difference extent and resource sustainability of China’s timber import source countries.The analysis result shows that China’s total risk of timber import gradually has been rising since 2006 although concentration extent of China’s timber source countries declined at the same period.

Forest Park Tourism Planning from Perspective of the Anti-planning Theory —With the tourism planning of Zigong Feilongxia Forest Park as an example

TANG Jianbing

2014,(2):  26-30.  doi:10.13466/j.cnki.lyzygl.2014.02.006

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The anti-planning theory in the field of tourism planning is an important research direction for the construction of regional priority control to realize the scenic spot space planning.The article introduces the anti-planning theory and analyzes the application of the anti-planning theory in forest park tourism planning.On the basis of the practical application of the anti-planning theory in Feilongxia Forest Park,this paper puts forward the application of the anti-planning theory to forest park tourism planning so as to improve forest park ecological space planning and rational land use planning,whicn will be more conducive to the sustainable development of tourism.

A Primary Research on the Methods of Wildlife Conservation in Forest Management in State Forest Farms

GAO Erhu, ZHENG Deguo, ZHOU Wei

2014,(2):  31-34.  doi:10.13466/j.cnki.lyzygl.2014.02.007

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State forest farms,which occupy about 23% of the forest area of China,have not paid much attention to wildlife conservation,although wildlife conservation in state forest farms is very important.Wildlife conservation should be one part of forest management in state forest farms.We suggest that firstly treasured and rare animals should be taken as the key species,secondly the key species and their habitats’ conservation enhanced,thirdly the forest farm divided into different divisions according to the distribution of key species and different measures taken in different divisions,and finally sustainable forest management methods used to reduce destruction of wildlife and their habitats in forest management so as to protect and develop wildlife resources.

Strengthening Scientific and Technological Cooperation between CAF and Local Agencies under New Situations

ZHANG Yihua

2014,(2):  35-39.  doi:10.13466/j.cnki.lyzygl.2014.02.008

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The paper systematically summarized and analyzed the overall situation of scientific and technological cooperation between Chinese Academy of Forestry(CAF)and more than 20 provinces and municipalities since 2000;It also described the great influence of this scientific and technological cooperation between CAF and local agencies,which not only facilitated the transformation and promotion of scientific and technological achievement in the field of forestry,but also promoted technology service in local forest development.Furthermore,the paper proposed that we should strengthen the scientific and technological cooperation based on the new situation and tasks that China’s forestry is facing.The paper aims at carrying out the spirit of the Third Plenary Session of the 18th CPC Central Committee,implementing the strategy of innovation driven development,comprehensively raising the development level of ecological forestry and forestry of people’s livelihood,and making greater contributions to building of a beautiful China.

Scientific Research

Analysis of Impacts of Forest Origin on Single Tree Biomass Models

ZENG Weisheng, WANG Xuejun, CHEN Zhenxiong, YAO Shunbin

2014,(2):  40-45.  doi:10.13466/j.cnki.lyzygl.2014.02.009

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Based on the measurement data of aboveground biomass from 604 sample trees and underground biomass from 212 sample trees of Chinese fir(Cunninghamia lanceolata)and Masson pine(Pinus massoniana)in southern China,the single tree above and under ground biomass models involving forest origin were constructed by using nonlinear mixed model and dummy variable model approaches,and the impact of forest origin on biomass models was analyzed.The results showed that the aboveground biomass models for different origins had no significant difference,while the underground biomass models were significantly different,from which the underground biomass estimate of natural tree with same diameter and height was highly greater than that of planted tree.Specially,the underground biomass estimates of natural trees are nearly 30% and about 45% greater than those of planted trees for Chinese fir and Masson pine respectively.

Research and Application of Individual Tree Positioning Technology for Forest Management Unit

PANG Lifeng, LU Yuanchang, HONG Lingxia, LI Tingting

2014,(2):  46-51.  doi:10.13466/j.cnki.lyzygl.2014.02.010

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The article reviews the research situation of positioning the individual tree in forest management.Then the automatic positioning technology of the individual trees is designed based on the VBA Excel technology.An implementation process about individual trees of positioning technology is presented in detail in forest management unit.The result indicates that the operation of positioning technology is simple and has high efficiency and makes the fine management of individual trees more visual,which is not only conducive to mastering of forest dynamic growth process,but also beneficial to decision-making of the forest operators.

Individual Crown Width Prediction Models and Accuracy Appraisal for Platycladus orientalis Plantation in Low Mountainous Area

LIU Ping, WANG Yutao, MA Lüyi

2014,(2):  52-57.  doi:10.13466/j.cnki.lyzygl.2014.02.011

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Individual crown width growth models for Platycladus orientalis plantation in Beijing low mountain area were established by linear regression model,multiple linear regression model and other models in accordance with data measured from 89 sample plots.The results show that the crown distribution range of Platycladus orientalis plantation in low mountain sunny slope is larger than that of shady slope,and the average crown width is significantly higher than that of shady slope.The forecast accuracy of multiple linear regression model is highest,the R² values are 0.751 and 0.770 respectively.T test of the multiple linear regression model reveals that the actual value is fitted well with the predicted value.The results could be applied to the crown width growth forecast of Platycladus orientalis plantations in Beijing low mountainous regions to provide a theoretical basis for the scientific management of Platycladus orientalis plantation.

Influence of Selection Cutting and Artificial Regeneration on Larix principis-rupprechtii Mayr.Understory Carbon Storage

SUN Haijing, ZHANG Yuqian, ZHANG Yuzhen, XU Xuehua, LI Huan, HUANG Xuanrui

2014,(2):  58-65.  doi:10.13466/j.cnki.lyzygl.2014.02.012

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In order to expound the influence of gap area on carbon reserve of planted saplings as well as influence of selective cutting and artificial regeneration on carbon reserve of shrubbery,grasses and litter of Larix principis-rupprechtii Mayr.low efficiency stands,the changing rule of carbon storage about sapling,shrub-grass and litter within the holes of 0.02hm²,0.03hm² and 0.05hm² were investigated.The results showed that,for biomass,artificially planted larix pricipis-rupprechtii biomass increased with the increase of selective pore area,artificially planted Betula platyphylla reaches maximum value in the area of 0.03 hm².When selective hole covers an area of 0.03 hm²,shrub biomass reached maximum.In different selective areas,the herb biomass of selective cutting hole with planting Larix principis-rupprechtii Mayr.was higher than Betula platyphylla.Along with the rising of the selective cutting hole area,the litter biomass reduced gradually,and the litter biomass within the hole planting Betula platyphylla was higher.For carbon storage,within the hole of same planted tree species,with the increase of the area of selective cutting hole,carbon storage of Betula platyphylla sample plot showed a trend of decreasing,while Larix principis-rupprechtii Mayr.sample plot showed the carbon storaye climbs up and then declines.In the same selective cutting area,planted Larix principis-rupprechtii Mayr.’s total carbon storage was relatively higher than Betula platyphylla.When selective cutting hole covers an area of 0.03 hm²,the sample area’s total carbon storagesof planted Larix principis-rupprechtii Mayr was maximum.

Carbon Storage of Woody Debris of Evergreen Broad-leaf Forests in Mid-subtropical Region of China at Three Succession Stages

ZENG Zhangquan, WANG Silong, ZHANG Canming, WU Zijian, LI Xiquan, LUO Jia

2014,(2):  66-72.  doi:10.13466/j.cnki.lyzygl.2014.02.013

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To better understand the effect of forest succession on carbon storage of woody debris(WD),carbon stock and allocation of evergreen broadleaf forest,a major zonal forest in subtropical China was investigated.Three forest types were sampled,i.e.,pine(Pinus massoniana)forest(PF),pine and broadleaf mixed forest(MF)and evergreen broadleaf forest(BF).The amount of woody debris(WD)biomass was between 1.26-8.82 Mg/hm²,in the following order:PF<MF<BF,which showed a trend of increase gradually with the succession.Coarse woody debris(CWD)carbon content varies with tree species and its decomposition level,with the improvement of CWD decomposition level,its carbon content gradually decreases.The woody debris carbon storages of PF,MF,and BF were 0.62 Mg/hm²,1.75 Mg/hm² and 3.78 Mg/hm²,respectively,corresponding to 0.73%,1.83% and 2.92% of the tree carbon storage.

Simulation of the Stand Volume Growth Curves in Regional Carbon Sequestration Study —With five primary forests in China as an example

NING Zhenya, XIANG Yingying, HUANG Lin

2014,(2):  73-82.  doi:10.13466/j.cnki.lyzygl.2014.02.014

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Stand volume growth was different in different regions due to the variations of tree species,stand condition,forest age,density and forest management etc.Single wood growth models and growth and yield projection models focused on a special plot or small area,and were limited in application of spatial scale extension due to tree species composition,stand quality and competition.Stand volumes of different tree species and stand ages in different regions were the key factor in forest carbon estimation.This paper simulated the stand volume growth curves of five primary forests in China,based on the sampling plot data of national forest resource inventory.The results showed that the best applicable theoretical growth equation for Oak is Richards,Logistic for Larix,Richards and Korf for Masson pine,Birch and Chinese fir;the stand volume of Birch,Oak and Chinese fir at high latitude showed higher value than lower altitude obviously;the stand volume of Masson pine at lower altitude showed higher value;and there was not significant difference with elevation for Larix.The Oak in central China,Masson pine in southwestern region,Chinese fir in Southern China,Birch in northwestern region and Larix in northeastern region showed higher stand volume than other regions.Furthermore,average stand volume and volume growth rate of natural forest of Oak,Masson pine and Larix were higher than the plantations,which was contrary for Chinese fir.These results could be applied to the accurate estimation of forest carbon sequestration and the projection of future potential carbon sequestration.

Study on Diameter Structure of Secondary Forest of Adiessibirica Ledeb in the Northeast Forest Area

XIAO Huashun, LIU Yu, LIU Falin

2014,(2):  83-86.  doi:10.13466/j.cnki.lyzygl.2014.02.015

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An analysis was made on the diameter structure of the secondary forest of Adiessibirica Ledeb in the Northeast forest area.The Weibull distribution,Gamma distribution and Log-normal distribution were used for fitting stand diameter distribution and combined with χ² fitting result for examination.The results indicated that the average DBH of Adiessibirica Ledeb forest was 15.1cm,the least diameter class was 5.1cm,the maximum diameter class was 47.1cm,and,the accumulating percentage of diameter class(6-28)was 75.8%.Among the whole distribution functions,the R² Weibull was 0.997,the χ² was 6.35 and the distribution fitting effect is best,followed by the Gamma distribution,the Log-normal distribution was worst,but the difference between the frontal two distributions was similar,all of them can be used to predict Adiessibirica Ledeb diameter structure,which provided theoretical basis for diameter structure and stand density redjustment.

Study on Population Structure and Spatial Distribution Characteristics of Pinus tabulaeformis in the Forest Region of the Helan Mountains in Inner Mongolia

YANG Yuewen, DUAN Yuxi, JI Meng, ZENG Yu, LI Yinxiang, REN Jianmin, ZHOU Xingqiang, ZHANG Fenghe

2014,(2):  87-92.  doi:10.13466/j.cnki.lyzygl.2014.02.016

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The pine forest is one of the typical vegetation types in the Helan Mountains which is situated on the eastern edge of the Alashan Plateau and the western edge of the Yinchuan Plain.Three representative sample plots were set up in different areas.The Pine population structures and distribution patterns were discussed by using statistical methods.The results showed that the population was in a stable state as a whole and the age structure of pine population in different sample plots were basically the same,but the population showed a declining tendency due to the bad growth of seedling and saplings .In addition,we also found that the Pine population in different sample plots showed random distribution pattern.

The Preliminary Study on Avicennia Marina Diameter Distribution in Leizhou Peninsula

ZENG Qunying, LIU Suqing, HUANG Jianjian, HAN Weidong, ZHOU Yuanman

2014,(2):  93-97.  doi:10.13466/j.cnki.lyzygl.2014.02.017

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In the stand growth model,selection of the stand diameter distribution functions is crucial.In this paper the diameter of Avicennia Marina in Leizhou Peninsula was used as the research object.The resulting data skewness and kurtosis were used as indicators,and three kinds of probability density function parameters of normal distribution,Weibull distribution and Gamma distribution were used for fit testing and analysis of the Avicennia Marina diameter distribution characteristics.The results showed that the Avicennia marina population is distributed in small and midium diameters in Leizhou Peninsula and the skewness and kurtosis are greater than 0,diameter distribution curve is left skewness,distribution curve is steep,showing peak state.Normal distribution and Weibull distribution fitting effect is poor,and Gamma distribution is fitted with good results.Through the establishment of Gamma distribution parameter estimation equation each diameter class and its dynamics can bepredicted.The result provides reference for the management and utilization of Avicennia marina community in Leizhou Peninsula.

Study on the Characteristics of Cephalotaxus oliveri Population and habitats in Renhua of Guangdong

MIAO Shenyu, ZENG Qingchang, WANG Houlin, HUANG Jinling, CHEN Jianhui, TAO Wenqin

2014,(2):  98-104.  doi:10.13466/j.cnki.lyzygl.2014.02.018

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By using an automatic onset HOBO mini-weather station,the air temperature and the air relative humidity were monitored for one year(2013)at Changjiang,Renhua,Guangdong where the national Grade II key protected plant species Cephalotaxus oliveri grows.The soil physic-chemical characteristics,the leaf surface light intensity,some eco-physiological indexes and the population structures of C.oliveri were also measured during the year in order to provide basic data for protecting and enhancing the plant population.Results showed that the mean annual air temperature was 13.854 ℃,the mean annual air relative humidity was 96.317% at the field site.Soil pH was 5.49 with a relative high effect K content of 742.50 mg/kg.The light intension on leaf surface of inner forest was 15% less than that of open outside of the forest.The leaf SPAD values was about 60,the net photosynthesis rate and transpiration rate of C.oliveri leaf were 2.85~3.53 μmol/(m²·s)(calculated by CO₂)and 0.36~1.43 mmol/(m²·s)(calculated by H₂O),respectively.The net photosynthesis rate and transpiration rate determined in July,2013 were significantly lower than that of the same genus species of C.fortune.The results of size class,height class and age class structures suggested that the population had an increasing tendency at present,but no seedlings below four years of age,which was probably caused by the icy disaster in early 2008 in the Nanling Mount region.It was predicted that the population would decrease after about 40 years.The ex-situ and in-site conservation measures of the key protected plant should be taken.

Analysis of Physical and Chemical Properties of Forest Soil in Huanglongshan Crossptilon Nature Reserve in Hancheng,Shaanxi Province

WANG Jibin, YANG Ping

2014,(2):  105-109.  doi:10.13466/j.cnki.lyzygl.2014.02.019

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By surveying the present soil status in this nature reserve,the authors divided the soil into 4h/pes (brunisolic soil,cinnamon soil,loessial soil,purplish soil),and this paper gives an introduction to the soil,soil-forming factors,types of soil,and their regularities of distribution.According to the distributiong of forest vegetation and the corresponding elevation,16 sample plots were set up in this nature reserve to study the physical and chemical properties of those soils.The detailed description and analysis were given on morphological characteristics and physicochemical property of soil types in the reserve.

Analysis on Eco-efficiency in the Hunshandake Key Ecological Function Areas

MENG Qinghua

2014,(2):  110-114.  doi:10.13466/j.cnki.lyzygl.2014.02.020

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The ecological footprint analysis method was used to calculate the eco-efficiency of 15 counties in the Hunshandake key ecological function areas.The results showed that the eco-efficiency difference of 15 counties is apparent,and its overall pattern is low at the north and high at the south.The eco-efficiency difference of 15 counties was divided into 5 levels.Making industries develop in an ecolgical way is a necessary and key condition for the counties at the 1-3 levels,but the others should pay more attention to the economic benefits of ecological construction for consolidation of the results achieved.

Approach and Technical Route for Forest Resource Regeneration Based on the Forest Sub-Compartment Data of Forest Management Inventory

NIAN Shunlong, YUN Xinhua, DENG Xiqing

2014,(2):  115-118.  doi:10.13466/j.cnki.lyzygl.2014.02.021

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Based on the analysis of research result concerning forest resource regeneration,An approach and technology route for updating forest resource data based on the information contained in forest sub-compartment of forest management inventory was proposed from the production practice point of view.The technical route implements updating the annual statement of forest resources and data updating in sub-compartment level based on the data of previous forest management inventory,annual forest management archive data and two-stage satellite image,by applying 3S technology,mathematical model and database technology,combined with field investigation.The practice shows that the approach is feasible and supports the full and accurate data updating efficiently and reliably.

The Extraction of Eucalyptus Information Based on TM Data Using object-oriented Method

MOU Zhihui, YANG Guangbin

2014,(2):  119-125.  doi:10.13466/j.cnki.lyzygl.2014.02.022

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With TM image as the data source,Luodian county as the study area,the object-oriented method and the vegetation spectral information were used to extract the evergreen vegetation data and according to the different vegetation spectral curve to extract the evergreen broadleaf vegetation data,and then,to extract Eucalyptus data on the basis of the growth environment characteristic of Eucalyptus,such as DEM,slope,soil,soil thickness,etc.The results show that the accuracy of Eucalyptus data is 86.67%.Using object-oriented method,the vegetation spectral information and the growth environment characteristic of tree species to extract the information of single data is feasible,which has demonstrative value for the extraction of other tree species.

Research Bulletin

A Method for Assessing the Spatial Positioning Accuracy of Forest Land Patch Delineation

LI Chungan, ZHANG Lianhua

2014,(2):  126-129.  doi:10.13466/j.cnki.lyzygl.2014.02.023

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How to assess the accuracy of forest land patch (sub-compartment) delineation is a key point in many tasks of inspection and evaluation in forestry.Area accuracy was usually used as the only indicator to assess the quality of patch delineation,but it could not represent the accuracy of spatial positioning of the sub-compartment.Therefore,this paper analyzed the typical cases of patch borderline positioning,then defined the patch overlap rate used to represent the overlap between reference polygon and inventory polygon,and proposed its calculation method.Using the overlap rate together with the area accuracy,the accuracy of patch positioning could be evaluated much more accurately and objectively.A case study indicated that if the overlap rate is greater than 85%,the patch delineation could be recognized as qualified in forest management inventory.

Combustibility of Eupatorium adenophorum in Central Yunnan Province

WANG Qiuhua, XIAO Huijuan, XU Shengji, TONG Yanmin, LI Shiyou, QIAN Bin, YANG Xiao

2014,(2):  130-133.  doi:10.13466/j.cnki.lyzygl.2014.02.024

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Sample plots of Eupaorium adenophorum Spreng were set up,and field investigation and lab experiments were conducted for testing combustible indexes,including ignite temperature,heat values and ash content.The results showed that the fuel loads of dead and live Eupaorium adenophorum Spreng were less than 0.5 kg/m²,while the litter of Eupaorium adenophorum Spreng arrived at (0.97±0.06)kg/m²;ignite temperatures of dead,live and litter fuels were (236.7±4.8)℃,(243.4±4.8)℃,and (281.7±1.9)℃,respectively,which was very easy to ignite;heat values of dead,live and litter fuels were (21075.2±8627.2)kJ/kg,(18527.9±913.7)kJ/kg and (16223.2±1257.6)kJ/kg,respectively,which reached a high point;and the ash contents of dead and live fuels were (9.89±0.33)% and (4.44±1.01)%,while that of the litter amounted to (17.22±5.93)%.

Study on Technical Modes for the Public Welfare Forest Tending in Zhejiang Province

ZHANG Yong, ZHOU Zigui, LI Tusheng, HONG Lixing, WANG Jianfeng, RU Jun

2014,(2):  134-139.  doi:10.13466/j.cnki.lyzygl.2014.02.025

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On the basis of the brief introduction to the basic situation of the public welfare forests in Zhejiang province,and according to the vegetation type characteristics of the public welfare forests,5 tending modes were designed for Cunninghamia lanceolata forest,Pinus massoniana forest,the broad-leaved and young forests,the broad-leaved and medium or near mature forests,and the mixed coniferous and broadleaf forest.The key technologies mainly included thinning,replanting,cuting of bush and weeding,sprout clearing and so on.Different tending modes were adopted for different vegetation types of the public welfare forests.

Study on the Fertilization Effect of Larix principis-rupprechtii Seedlings

FAN Jingfang, FANG Liang, JI Meng, CUI Xianjun, WANG Zhibo, LI Yun

2014,(2):  140-144.  doi:10.13466/j.cnki.lyzygl.2014.02.026

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Scientific fertilization is one of the key measures to improve the quality of seedlings and yield of qualified seedlings.By using different types of fertilizers and fertilization methods in the field,comparative test about Larix principis-rupprechtii 1a seedlings shows that:(1)In top dressing of urea,ammonium bicarbonate,ammonium nitrate and ammonium sulfate in field,the ammonium sulfate has the best effect.Based on the comparative test the average diameter,seedling height and production are 51.81%,76.19% and 123.52% higher.(2)Basing organic fertilizer has an outstanding influence on the growing of seedlings.The average diameter,seedling height and production are 24.10%,26.84% and 100.00% higher.(3)Using potassium dihydrogen phosphate to foliar fertilizer also has an outstanding influence on the growing of seedlings.The average diameter,seedling height,root length and fibrous root length are 17.27%,25.76%,20.42% and 17.17% higher than those of the former field.

Study on Sustainable Utilization of Qiongzhuea Tumidinoda Resources in Zhaotong City,Yunnan Province

MAO Yueqiang, QIE Limei, WANG Hui, WEI Feng

2014,(2):  145-149.  doi:10.13466/j.cnki.lyzygl.2014.02.027

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Qiongzhuea tumidinoda,endemic to southwest China,is one of rare bamboo species under national protection,which is distributed mainly in Zhaotong City,Yunnan Province.Qiongzhuea tumidinoda has higher economic value.However,in recent decades,the overexploitation and irrational utilization of Qiongzhuea tumidinoda resources have caused the quality to decline and severe population degradation.The thesis analyzed the Qiongzhuea tumidinoda resources utilization status and existing problems and proposed corresponding sustainable utilization countermeasures in Zhaotong City.In order to protect and rationally use Qiongzhuea tumidinoda resources,this study provides scientific basis for local economic and social sustainable development.

Development and Utilization of Economic Values of Urban Landscape Plants in Shijiazhuang

HAN Chenxia, TIAN Jianwen, ZHAO Xuyang, SONG Baoping

2014,(2):  150-154.  doi:10.13466/j.cnki.lyzygl.2014.02.028

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Many landscape plants have edible,medicinal,forage,industrial and other economic values,which have not been fully developed and used.In this paper,the landscape plant species in Shijiazhuang and their economic values are investigated and analyzed,the principle and scheme of economic development and utilization of landscape plant value in Shijiazhuang are put forward,which provides the reference for full and sustainable utilization of landscape plant resources in Shijiazhuang.

Analysis on Diversity of Retrotransposons in Sabina vulgaris

YU Limin, LIN Xiaofei, ZHANG Wenquan, ZHANG Guosheng, ZHANG Wenbo

2014,(2):  155-160.  doi:10.13466/j.cnki.lyzygl.2014.02.029

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For exploiting retrotransposon gene resource,and analyzing diversity and phylogenetic evolution of retrotransposons in Sabina vulgaris genome,twenty-two of fragments encoding reverse transcriptase of Ty1-copia-like retrotransposon were cloned by degenerate-PCR.The length of the nucleotide sequences excluding primer varied from 239 to 247 bp,and homology ranged from 49.6% to 98.4%,showing high heterogeneity.Phylogenetic analysis of the nucleotide sequences showed that the twenty-two sequences consisted of five families.When they were translated into amino acids,stop codon mutation was found in seven sequences,and frameshift mutation was found in four sequences.The alignment analysis of amino acid sequences of Ty1-copia-like reverse transcriptases from S.vulgaris and other plant species suggested that they may have the same origin.These results demonstrated diversity of retrotransposon in S.vulgaris genome,and could prove to be useful for further study on genetic diversity and cultivar identification of S.vulgaris.