Evaluation of Soil Fertility Under Different Cupressus chengiana Forests Using Multivariate Approach

PANG Xue-Yong; BAO Wei-Kai; ZHANG Yong-Mei

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Evaluation of Soil Fertility Under Different Cupressus chengiana Forests Using Multivariate Approach

机译：用多元方法评价不同柏树的林地土壤肥力

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The distribution and growing conditions of Cupressus chengiana forests along with the physical and chemical properties of soils in Northwest Sichuan were studied in 2002 to investigate the conditions and characteristics of soil fertility of C.chengiana and to compare and investigate differences of soil fertility for six C. chengiana populations and their relationships with vegetation, climate and disturbance. The results of the study at 0-20 cm soil depth showed that 1) significant differences (P＜0.05) existed among populations for soil bulk density, soil total porosity, capillary porosity, maximum water-holding capacity, capillary water-holding capacity and topsoil natural water content; 2) chemical characteristics of soil organic matter, total N, total P, alkali-hydrolyzable N, available P, available K and cation exchange capacity were significantly different among the populations; and 3) based on the significant effect of soil fertility factors on forest growth,soil physical and chemical characteristics could be selected as an integrated fertility index (IFI) for evaluation of different C. chengiana populations. Principal component and cluster analyses showed significant differences probably due to the difference of vegetation conditions, management measurements, human-induced disturbances and environmental factors.In order to protect the soil ecological functions in fragile ecological regions, C. chengiana could be used in programs enclosing the hill for natural afforestation, natural forest protection programs, and programs replacing agriculture with afforestation measures.

机译：2002年研究川西北柏的分布和生长条件，以及土壤的理化性质，以研究川柏的土壤肥力的条件和特征，并比较和研究六种碳的土壤肥力的差异。 chengiana种群及其与植被，气候和干扰的关系。在0-20 cm土层深度的研究结果表明：1）种群之间的土壤容重，土壤总孔隙度，毛细孔隙率，最大持水量，毛细持水量和土壤水分之间存在显着差异（P ＜0.05）。表土自然含水量; 2）不同种群间土壤有机质，总氮，总磷，碱解氮，速效磷，速效钾和阳离子交换能力的化学特征差异显着; 3）根据土壤肥力因子对森林生长的显着影响，可以选择土壤理化特性作为综合肥力指数（IFI），以评价不同的成虫梭菌种群。主成分和聚类分析显示出明显的差异，这可能是由于植被条件，管理措施，人为干扰和环境因素的差异所致。自然造林，自然森林保护计划以及以造林措施取代农业的计划。

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来源
《土壤圈（英文版）》 |2006年第5期|602-615|共14页
作者
PANG Xue-Yong; BAO Wei-Kai; ZHANG Yong-Mei;
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作者单位

Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041 (China);

Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China);

Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041 (China);

Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041 (China);

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
cluster analysis; Cupressus chengiana; dry valley; principal component analysis; soil fertility;

机译：聚类分析;cheng柏;旱谷;主要成分分析;土壤肥力;

Evaluation of Soil Fertility Under Different Cupressus chengiana Forests Using Multivariate Approach

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