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林业资源管理 ›› 2016›› Issue (5): 53-58.doi: 10.13466/j.cnki.lyzygl.2016.05.010

• 科学研究 • 上一篇    下一篇

基于灰色关联分析的杉木连栽林地土壤水分物理性质研究

覃祚玉1, 王会利1, 靳宝川2, 邓小军1, 曹继钊1, 唐健1   

  1. 1.广西林业科学研究院 国家林业局中南速生材繁育实验室 广西优良用材林资源培育重点实验室,南宁 530002;
    2.广西自治区林业厅,南宁 530028
  • 收稿日期:2016-06-27 修回日期:2016-09-22 出版日期:2016-10-28 发布日期:2020-11-02
  • 作者简介:覃祚玉(1986-),女,广西蒙山人,助工,主要从事植物营养与土壤化学研究。Email:lxyqinzuoyu@163.com
  • 基金资助:
    广西林业科技项目(桂林科字[2014]第15号);广西优良用材林资源培育重点实验室自主课题资助项目(14-A-02-01);广西林业科技项目(桂林科字[2015]第40号) ;广西林业科技项目(桂林科字[2014]第30号)

Research on Soil Moisture Physical Characteristics of Cunninghamia lanceolata Plantations under Different Rotations of Continuously Planting in Guangxi Based on Gray Correlation Analysis

QIN Zuoyu1, WANG Huili1, JIN Baochuang2, DENG Xiaojun 1, CAO Jizhao1, TANG Jiang1   

  1. 1. Guangxi Zhuang Autonomous Region Forestry Research Institute,SFA's Key Laboratory of Central South,Fast-growing Timber Cultivation and Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Nanning 530002,China;
    2. Department of Forestry of Guangxi Zhuang Autonomous Region,Nanning 530028,China
  • Received:2016-06-27 Revised:2016-09-22 Online:2016-10-28 Published:2020-11-02

摘要: 选取广西杉木连栽一代林(G1)和二代林(G2)土壤的容重、孔隙度、持水量和贮水量等11个物理性质作为参评对象,利用MCE-Gray软件计算出广西杉木幼林不同栽植代数、不同土层深度土壤水分物理状况的关联度及大小排名。分析结果表明:1) G1,G2的土壤容重均随深度的增加而增加,随着栽植代数的增加,土壤容重趋于减少;2) 随土层深度的增加,G1,G2的总孔隙度、毛管孔隙度、饱和持水量和毛管持水量均逐渐增加;3) 杉木林在0~40 cm土层中,G2林地土壤物理性质优于G1林地,G2的土壤保水能力较G1强,但G2的涵养水源能力比G1弱;4)土壤容重对土壤水分物理状况的影响最为重要,连栽杉木人工幼林林地的水分物理状况水平排列顺序为G2(0~20cm)>G2(20~40cm)>G1(0~20cm)>G1(20~40cm)。

关键词: 杉木, 连栽, 土壤水分, 物理性质, 灰色关联分析

Abstract: In order to provid a reliable basis in theory for sustainable management and sustainable nutrient management of successive planting of Cunninghamia lanceolata plantations in Guangxi Zhuang Autonomous Region,the eleven evaluation objects(such as soil bulk density,soil porosity,soil water retaining capacity and soil water storage etc.) were selected as the research objects,and modern comprehensive evaluation software of AHP module was used to calculate and analyze the correlation degree and size ranking of soil moisture physical condition of Cunninghamia lanceolata plantations under different plantings(G1 and G2)and different soil thickness(0~20cm and 20~40cm).The results showed that:(1) The soil bulk density of Cunninghamia lanceolata plantations under different rotations increased with the increment of soil depth.The soil bulk density of soil were greatly reduced by the continuous cropping of Cunninghamia lanceolata.(2) With the increment of soil depth,total porosity,capillary porosity,saturated moisture capacity,capillary holding capacity increased gradually.(3) In the layer of 0~40 cm,the soil total and uncapillary porosity of the second generation forest was larger than the first one,soil water retention capacity of the second generation forest was stronger than the first one,but the former was weaker.(4) The effect of soil bulk density on soil moisture physical condition was the most important,and the order of soil moisture physical condition in the field of successive planting Cunninghamia lanceolata was G2(0~20cm) >G2(20~40cm)>G1(0~20cm)>G1(20~40cm)。

Key words: Cunninghamia lanceolata, the continuous cropping, soil moisture, physical characteristics, gray correlation analysis

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