湘西北退化侵蚀地植被恢复区土壤养分、微生物与酶活性的典范相关分析*

doi:10.11707/j.1001-7488.20080901

林业科学 ›› 2008, Vol. 44 ›› Issue (9): 1-6.doi: 10.11707/j.1001-7488.20080901

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湘西北退化侵蚀地植被恢复区土壤养分、微生物与酶活性的典范相关分析*

漆良华¹ 张旭东² 彭镇华² 周金星²

（1.国际竹藤网络中心北京100102； 2.中国林业科学研究院林业研究所北京100091）

收稿日期:2007-03-26 修回日期:1900-01-01 出版日期:2008-09-25 发布日期:2008-09-25
通讯作者: 张旭东

Canonical Correlation Analysis on Soil Nutrients, Microorganisms and Enzyme Activities in Vegetation Restoration Areas for Soil Degradation and Erosion in Northwest Hunan

Qi Lianghua¹,Zhang Xudong²,Peng Zhenhua²,Zhou Jinxing²

（1.International Center for Bamboo and Rattan Beijing 100102； 2.Research Institute of Forestry, CAF Beijing 100091）

Received:2007-03-26 Revised:1900-01-01 Online:2008-09-25 Published:2008-09-25

摘要/Abstract

摘要：

以湘西北女儿寨小流域为研究对象，运用典范相关分析法研究退化侵蚀地植被恢复区土壤养分、微生物及酶活性之间的相互关系。结果表明: 土壤养分综合因子中起主要作用的为N与P，土壤微生物综合因子中起主要作用的为细菌数量、微生物生物量C、微生物生物量N，土壤酶活性综合因子中起主要作用的为脲酶、多酚氧化酶、磷酸酶和转化酶；脲酶和多酚氧化酶的活性与土壤N，P 的转化有关，而N，P的转化与微生物生物量C、微生物生物量N的累积有关；脲酶、多酚氧化酶及磷酸酶的活性对微生物生物量C积累有一定的促进作用，转化酶的活性对微生物生物量N积累有一定的抑制作用，脲酶活性有利于提高土壤N素含量，降低土壤P素水平，多酚氧化酶活性与土壤N素负相关；不同植被恢复群落不同土壤层次的养分、微生物及酶活性在各对典范变量上的聚集趋势可为植被恢复过程中的土壤健康诊断与立地类型划分提供一定的依据。

关键词: 植被恢复, 土壤养分, 土壤微生物, 土壤酶活性, 典范相关分析

Abstract:

Through canonical correlation analysis the relationships between soil nutrients, soil microorganisms and soil enzyme activities were studied in vegetation restoration areas for soil degradation and erosion in the case of Nüerzhai watershed, northwest Hunan. The results showed that the key factors in soil nutrients, microorganisms and enzyme activities were N and P elements, bacterial number, soil microbial biomass carbon and nitrogen, and the activities of urease, polyphenol oxidase, phosphataese and invertease respectively. The activities of urease and polyphenol oxidase were related to the transformation of N and P elements which had important impact on the cumulation of soil microbial biomass carbon and nitrogen. Moreover, the activities of urease, polyphenol oxidase and phosphataese promoted microbial biomass carbon cumulation, however, invertease activities inhibited the cumulation of microbial biomass nitrogen. Urease activities were also beneficial to the N element content in soil and unfavorable for P element. There existed a negative relationship between the polyphenol oxidase activity and N element content. For every canonical variable group, the gathering tendencies of soil nutrients, microorganisms and enzyme activites in different soil layers in different vegetation restoration communities could offer some scientific basis for soil health diagnosis and site type dividision in the process of vegetation restoration.

Key words: vegetation restoration, soil nutrient, soil microorganism, soil enzyme activity, canonical correlation analysis (CCA)

漆良华张旭东彭镇华周金星. 湘西北退化侵蚀地植被恢复区土壤养分、微生物与酶活性的典范相关分析*[J]. 林业科学, 2008, 44(9): 1-6.

Qi Lianghua;Zhang Xudong;Peng Zhenhua;Zhou Jinxing. Canonical Correlation Analysis on Soil Nutrients, Microorganisms and Enzyme Activities in Vegetation Restoration Areas for Soil Degradation and Erosion in Northwest Hunan[J]. Scientia Silvae Sinicae, 2008, 44(9): 1-6.

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湘西北退化侵蚀地植被恢复区土壤养分、微生物与酶活性的典范相关分析*

Canonical Correlation Analysis on Soil Nutrients, Microorganisms and Enzyme Activities in Vegetation Restoration Areas for Soil Degradation and Erosion in Northwest Hunan

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