Evaluation on Site Quality of Larch Plantations in Dongjingcheng

doi:10.13466/j.cnki.lyzygl.2017.02.010

Abstract

Abstract:

Investigation was carried out in larch plantations growing in Dongjingcheng Forestry Bureau,Heilongjiang Province,China.The main factors affecting the growth of the stands were analyzed by Quantitative Theory I.It was found that the main factors were altitude,soil depth and aspect,respectively.With the 3 leading site factors the stands are divided into 16 site types.Through the establishment of the quality evaluation model of larch plantations,the model is used for appraising the quality of larch plantations in Dongjingcheng,16 site types are divided into 3 categories:excellent,middle and poor.The result of examination of the model indicated that it met the precision requirements.

Key words: larch plantations, Quantitative Theory I, site classification, site quality valuation

CLC Number:

S791.22

LI Yanjie, ZHOU Lai, JIN Aixian, SUN Yujun. Evaluation on Site Quality of Larch Plantations in Dongjingcheng[J]. FOREST RESOURCES WANAGEMENT, 2017, (2): 53-57.

Figures/Tables 6

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References 11

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立地因子	分级标准
立地因子	1	2	3	4
海拔/m	<500	≥500
坡度	<5°	5°~15°	≥15°
坡向	阳坡	半阳坡	半阴坡	阴坡
坡位	上坡	中坡	下坡
土层厚度/cm	<40	≥40

标准地号	优势木高/m	海拔/m		坡度/(°)			坡向				坡位			土层厚度/cm
标准地号	优势木高/m	<500	≥500	<5	5~15	≥15	阴坡	半阴坡	半阳坡	阳坡	上坡	中坡	下坡	<40	≥40
1	18	1	0	0	0	1	0	1	0	0	0	1	0	1	0
2	29	0	1	0	1	0	0	1	0	0	1	0	0	1	0
3	27	0	1	1	0	0	1	0	0	0	1	0	0	0	1
4	24	1	0	0	1	0	1	0	0	0	0	1	0	1	0
5	14	1	0	0	1	0	0	0	0	1	1	0	0	0	1
6	31	1	0	1	0	0	1	0	0	0	0	0	1	0	1
?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
83	20	0	1	1	0	0	0	0	1	0	1	0	0	0	1

项目	偏相关系数	显著性(sig.)
海拔	0.844	<0.001
坡度	0.093	0.536
坡向	0.324	0.026
坡位	0.293	0.460
土层厚度	0.435	0.002

指标	项目	类目	得分值
海拔/m	<500	X₁₁	10.1741
	≥500	X₁₂	5.3678
土层厚度/cm	<40	X₂₁	6.4837
	≥40	X₂₂	9.0582
坡向	阴坡	X₃₁	4.1137
	半阴坡	X₃₂	4.0901
	半阳坡	X₃₃	3.6524
	阳坡	X₃₄	3.6857
坡位	上	X₄₁	5.0638
	中	X₄₂	4.9411
	下	X₄₃	5.5369
坡度/(°)	<5	X₅₁	0.3126
	5~15	X₅₂	-0.2941
	≥15	X₅₃	0.0064

项目	立地类型
项目	Ⅰ	Ⅱ	Ⅲ
得分值	24.6899~29.1955	20.1842~24.6899	<20.1842
立地质量评价	优	中	差