草业科学2012，Vol.29Issue(7)：1028-1032,5.
东祁连山不同退化程度高寒草甸土壤养分特征研究
Soil nutrient characteristics of alpine meadow at different degradation degrees in Eastern Qilian Mountains
摘要
Abstract
The soil nutrients of alpine meadow at different degradation degrees in the eastern region of Qilian Mountains were reported in this study. The results of this study indicated that the contents of soil total nitrogen, total phosphorus, available manganese and iron decreased along with the degradation, and meanwhile, the pH value increased. The organic matter, available zinc, nitrogen and phosphorus content decreased firstly and then increased, and the organic matter content were the lowest at severe degradation degrees, and the available zinc, nitrogen and phosphorus content were the lowest at moderate degradation degree, and the total potassium and available copper content were similar among different degradation degrees. The content of organic matter and total nitrogen at 20--30 cm layer was higher that at surface soil layer at extreme degradation degree. On the whole the soil organic matter, total nitrogen, total phosphor- us, available nitrogen, phosphorus and potassium, available phosphorus and phosphorus zinc declined and available iron, copper and manganese increased as the soil depth increased.关键词
高寒草甸草地/土壤养分/东祁连山/退化程度Key words
alpine meadow/soil nutrient/Eastern Qilian Mountains/degradation degrees分类
农业科技引用本文复制引用
张生楹,张德罡,柳小妮,陈建纲,徐长林,段春华..东祁连山不同退化程度高寒草甸土壤养分特征研究[J].草业科学,2012,29(7):1028-1032,5.基金项目
国家自然基金草地综合顺序分类系统与中国草地NPP的研究 （）
