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EFFECT OF HUMAN-INDUCED DISTURBANCE ON SOIL PHYSICAL PROPERTIES OF SUBALPINE CONFEROUS FORESTS IN WESTERN SICHUAN

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF APPLIED & ENVIRONMENTAL BIOLOGY
Issue:
6
DOI:
10.3321/j.issn:1006-687X.2002.06.003
Key Word:
川西亚高山;针叶林;土壤物理性质;人为干扰;干扰强度

Abstract: 研究了川西亚高山针叶人工林在几种不同强度人为干扰下林地土壤物理性质.结果表明,随人为干扰强度的增加,土壤中细土(粉粒、粘粒)和大团聚体数量减少,小团聚体和原生土壤颗粒增加;土壤表层孔隙度减小,尤其是大孔隙明显减少;土壤有效水降低,持水供水能力减弱,渗透系数减小.川西亚高山人工针叶林土壤生态功能随人为干扰强度的增加而减弱,建议在最易受人为干扰的造林地区,最好是在造林初期封山育林. 图1 表5 参13

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