草业科学2011，Vol.28Issue(10)：1801-1806,6.
草地生态系统土壤酶活性研究进展
Advances on soil enzymatic activities in grassland ecosystem
摘要
Abstract
Soil enzymes play an important role in the soil ecosystem nutrient cycling and energy flow. Therefore, the study of soil enzymatic activities has important significance to investigate the structure, function and sustainable development of grassland ecosystem. The research of soil enzymes has experienced three different historical periods which were foundation period（Before 1950s）, fast development period （1950--1980s） and mutual penetration with other disciplines period （1980s）. Soil enzymes are mainly de- rived from soil microbe. They can be divided into six categories which were oxidoreductase, hydrolase, transferase, lyase, ligase and isomerase. This paper summarizes several factors affecting soil enzymatic activities of grassland ecosystem, such as degradation levels, fertilization, grazing, soil microbe, season and so on. Based on previous research, we concluded that： 1） soil enzymatic activities tend to decrease with the aggravation of degradation, 2） soil enzymatic activities could be increased to some extent by fertilization, 3） soil enzymatic activities increased by light grazing but reduced by heavy grazing, 4） soil enzymatic activities positively correlated with soil microbe, 5） soil enzymatic activities varied with season. Finally, a prospect to the research and development of the relationship between degradation, restoration and improvement of Qinghai-Tibet plateau alpine meadow ecosystem and soil enzymatic activities was made.关键词
草地生态系统/土壤/酶活性Key words
grassland ecosystem/soil/enzymatic activities分类
农业科技引用本文复制引用
向泽宇,王长庭,宋文彪,四郎生根,呷绒仁青,达瓦泽仁,扎西罗布..草地生态系统土壤酶活性研究进展[J].草业科学,2011,28(10):1801-1806,6.基金项目
国家自然科学基金重点项目 （）
西南民族大学研究生创新型科研项目 （）
西南民族大学高层次人才引进项目 （）
西南民族大学研究生学位点建设项目 （）
