干旱区研究2012，Vol.29Issue(5)：870-877,8.
贺兰山西坡不同类型草地土壤酶活性特征
Characteristics of Soil Enzyme Activities in Different Grasslands in the Western Slope of the Helan Mountain, China
摘要
Abstract
Soil enzymes are the specific biological catalysts for biochemical reaction in soil, and one of the indica-tors of evaluating soil health. This study was conducted at the grasslands in the westem slope of the Helan Mountain and its piedmont in Alxa, Inner Mongolia, China. With measuring the distribution characteristics of soil enzyme ac-tivities, the relationships between soil enzyme activities and soil, vegetation and climatic factors were studied. The results are as follows ： （ 1 ） Soil enzyme activities were decreased with the decrease of altitude and in an order of al-pine meadow 〉 mountain steppe 〉 mountain desert steppe 〉 steppe desert, and the difference was significant in topsoil （0-10 cm in depth） ; （2） Soil enzyme activities were decreased with the increase of soil depth; （3） Ac-cording to the partial correlation and stepwise regression analysis, the main factors affecting the activities of soil ure-ase and saccharase were soil microbial biomass carbon, soil organic carbon and total nitrogen, soil alkaline phos-phatase activity was mainly affected by soil microbial biomass carbon and total nitrogen, and soil catalase activity was mainly affected by soil microbial biomass, total nitrogen, pH value and precipitation.关键词
草地类型/土壤酶/海拔高度/土壤微生物/贺兰山/阿拉善Key words
grasslands/soil enzyme activity/altitude/soil microbe/Helan Mountain/Alxa分类
农业科技引用本文复制引用
秦燕,牛得草,康健,曹格图,张斯莲,傅华..贺兰山西坡不同类型草地土壤酶活性特征[J].干旱区研究,2012,29(5):870-877,8.基金项目
中国科学院战略性先导科技专项“应对气候变化的碳收支认证及相关问题（XDA05050406-8）” （）
科技部科技支撑计划项目 （）
国家自然科学基金项目 （）
兰州大学中央高校基本科研业务费专项资金（lzujbky-2012-98）资助 （）
