湖北宜昌风化花岗岩区林草植被改良土壤作用的定量化分析

为确定适宜湖北宜昌风化花岗岩地区的林草植被类型，利用主分量分析方法对该地区林草植被的土壤改良作用进行了数量化分析和评价。结果表明：松栎混交林对土壤的改良效果最好，草地次之，马尾松纯林则较差。

Quantitative Analysis on Soil Amelioration of Forest-grass Vegetation in Weathered Granite Area of Yichang City,Hubei Province

To determine suitable type of forest-grass vegetation in weathered granite area of Yichang City, Hubei Province, the paper conducted quantitative analysis and evaluation to the effect of forest-grass vegetation on soil amelioration with primary component method. The results indicated that the effect of mixed masson pine and oak forest on soil amelioration was the best,that of grass was the second and the pure masson pine forest was the worst.