期刊论文

Zhang, Y.

中文

生态学报

1000-0933

2011

31

11

3232-3238

基金项目：国家自然科学基金资助项目（30700018） 中央公益型科研院所基本科研业务费专项资金项目（CAFRIF200713）

本校为第一机构

为了揭示青藏高原高寒草地土壤微生物活性和微生物量碳、氮情况,同时探讨气候变化对土壤微生物的影响,以青藏高原腹地三江源自然保护区高寒草原土壤为研究对象,选择土壤质地、植被类型基本一致,海拔高度不同(3400_4200m)的4个样地,分析测定了土壤微生物(细菌、真菌、放线菌和部分生理功能微生物群)数量、土壤微生物量(碳、氮)、土壤酶(纤维素酶、蛋白酶、脲酶、蔗糖酶)活性。结果表明:研究区域均含有较丰富的土壤有机碳和养分,微生物数量多少为细菌>放线菌>真菌,主要功能微生物菌群数量为氨化细菌>好气性固氮菌>硝化细菌>亚硝化细菌,样地间的微生物生物量碳、氮含量差异显著。相关性分析表明,除...

The global climate has experienced drastic changes in the 20th century, and it has been suggested that even more will take place in the 21st century if the greenhouse gas emission rate remains at or exceeds the current level. More research has been focused on the global warming with a goal to assess the influence of the climate change on ecosystem processes and functions from different aspects. Microorganisms are the most abundant and diverse group of life on our planet and play specific and key functional roles in ecosystems including decomposition, element cycling, decontamination of man-mad...