三峡库区坡面农林复合结构对土壤养分分布的影响  

The Impact of the Agroforestry Structure of Slopeland on Distribution of Soil Nutrient in the Three Gorges Reservoir Area

作　　者：黄闰泉[1] 刘贵开[1] 袁传武[1] 潘磊[1] 夏剑萍[1] 

机构地区：[1]湖北省林业科学研究院,湖北武汉430075

出　　处：《北华大学学报（自然科学版）》2000年第4X期342-346,共5页Journal of Beihua University（Natural Science）

基　　金：国家“九五”攻关项目!(96 -007-02-04)

摘　　要：通过对三峡库区迎江坡面5种已持续经营15a以上具有代表性的农林复合结构类型的土壤养分状况的监测，研究了不同农林复合结构对土壤养分分布的影响。从坡顶至坡脚，农林复合结构类型分别为坡耕地－经济林－林地、林地－经济林－坡耕地、经济林－坡耕地－林地、林地－坡耕地－经济林、林地－经济林－梯地。通过测定土壤全N、全P、全K、水解N、速效P和有机质，分析得出：林地－经济林－梯地、经济林－坡耕地－林地结构具有较好的土壤养分保持功能。This paper studies the impact of agroforestry structure on the distribution of soil nutrient by the way of surveying 5 kinds of typical agroforestry structure, such as slope cultivated land economical forest forest, forest economical forest slope cultivated land, economical forest slope cultivated land-forest, forest slope cultivated land economical forest terraced land, which had managed 15 years on slope land towards Yangze River in the Three Gorges Reservoir Area. By analyzing soil nutrient components total N, total P, total K, hydrolyzing N, effective P and organism, it expounds two kinds of agroforestry structure, such as forest-economical forest terraced land and economical forest slope cultivated land-forest, have better retentive power of soil nutrient.

关 键 词：三峡库区 坡面 农林复合结构 土壤养分分布 养分保护 生态环境建设 

分 类 号：S158.3[农业科学—土壤学]