摘要
以对侵蚀红壤肥力退化过程分析为基础,通过因子分析和相关分析对评价红壤肥力退化的指标体系进行了分析研究。结果表明,侵蚀退化红壤复垦后土壤肥力得到不同程度的恢复,时间和生物因素是影响土壤肥力恢复的主要因素。复垦时间长,发展林业均有助于土壤物理、化学和微生物性质的恢复。因子分析能有效地减少土壤性质指标间的重复信息,起到筛选和精简指标的作用。精简的6项指标(有机质含量、水稳性团聚体、过氧化氢酶、土壤物理性黏粒含量、土壤阳离子交换量、土壤微生物量碳)能概括所测定的全部16项指标包含信息的90%以上,能以较少的指标来反映土壤肥力的整体状况。
Based on the analysis of eroded red soil deterioration processes, research on evaluation index system of red soil deterioration is carried out. Influenced mainly by time and biological factors, soil fertility has been restored gradually with the reclamation of eroded soil. The process of soil restoration can be promoted with much longer time and forest plantation. Correlation and factorial analyses are used to reduce the iterated information and simplify soil indexes. Six indexes are selected to indicate more than 90 percent information of all 16 soil indexes, and thus soil fertility status can be expressed by fewer indexes.
出处
《水土保持通报》
CSCD
北大核心
2007年第5期63-66,70,共5页
Bulletin of Soil and Water Conservation
基金
上海市教委资助项目(05DZ32)
国家自然科学基金资助项目(49671050)
上海师范大学青年基金项目(DQL410)
关键词
侵蚀红壤
红壤退化
评价指标
eroded red soil
red soil degradation
evaluation index
