生态环境学报2012，Vol.21Issue(1)：69-73,5.
毛乌素沙地东南缘沙漠化过程中土壤酶活性的演变研究
Study on the evolution of soil enzyme activities in different desertification stages on the Southeastern Edge of Mu Us Sandy Land
摘要
Abstract
This study examined the changes in soil enzyme activities in different desertification stages on the Southeastern Edge of Mu Us Sandy Land, China. Specially, soil urease, catalase and polyphenol oxidase activities were tested and analyzed. In addition, the correlation relationship between enzyme activities and between these enzyme activities and the soil organic matter, total nitrogen were also analyzed. The results showed, with the increasing degree of desertification, urease, catalase and polyphenol oxidase activities were decreasing. And with the increase of soil depth, urease activities were decreasing, while catalase and polyphenol oxidase activities were not changing regularly. Soil enzyme activities were destroyed with the increasing degree of desertification, and could sensitively represent the desertification degree. The results of correlation analysis showed, there were significant correlation between soil urease, catalase and polyphenol oxidase activities, and there were significant correlation between enzyme activities and the soil organic matter, total nitrogen. Urease, catalase and polyphenol oxidase activities interacted in a symbiotic relationship, and could indicate the changing environment of desertification and provide scientific basis for revealing biological law of desertification.关键词
毛乌素沙地/土壤酶活性/土壤养分/相关性Key words
Mu Us Sandy Land/soil enzyme activities/soil nutrient/correlation分类
农业科技引用本文复制引用
杨梅焕,曹明明,朱志梅..毛乌素沙地东南缘沙漠化过程中土壤酶活性的演变研究[J].生态环境学报,2012,21(1):69-73,5.基金项目
国家自然科学基金(30700648) （30700648）
西安科技大学培育基金(2010006) （2010006）
西北大学研究生创新基金(08YZZ27) （08YZZ27）
