小流域森林生态系统土壤发生与元素地球化学特性

本文研究了广东五华县牛角塘综合治理试验区几种典型森林生态系统土壤的物质迁移、肥力特性及元素迁移与富集传性，结果表明，生态类型的差异不仅会影响到土壤的肥力状况，同时由于水土流失等因素的影响，还会造成土壤机械组成、元素迁移富集特点以及其它发生学特性的差异，林地、半林地及光山地之间在这些方面也存在着明显的差异性．

Soil Cenesis and Elemental Geochcmical Features of Forest Ecosystems of Small Basin

This paper deals with soil material leaching, fertility features,and element transport and enrichment characteristics of soils of some typical forest ecosystems in integrated control experimental plot at Niujiaotang, Wuhua County, Guangdong Province. The results showed that not only the fertility conditions but also the soil mechanical compositions, element transport and enrichment characteristics and some other genetic features were affected by the difference of ecosystems due to the factors of water loss and soil erosion, et al. There were some distinct and regular differences in soil ba values, Sa values, EI, LA and in fertility factors such as OM contents, total N, P, K and available N, P and K nutrients among forest land, semi-forest land and bare land.