Effects of short-term and long-term warming on soil nutrients, microbial biomass and enzyme activities in an alpine meadow on the Qinghai-Tibet Plateau of China

文献类型： 外文期刊

第一作者： Wang, Xuexia

作者： Wang, Xuexia;Dong, Shikui;Liu, Shiliang;Su, Xukun;Li, Yuanyuan;Gao, Qingzhu;Zhou, Huakun

作者机构：

关键词： Experimental warming;Soil nutrients;Enzyme activity;Microbial biomass;Alpine meadow

期刊名称：SOIL BIOLOGY & BIOCHEMISTRY （ 影响因子：7.609； 五年影响因子：8.312 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Two open-top chambers (OTCs) experiments were conducted to assess the impacts of 2-year and 10-year warming on soil biochemistry in the alpine meadow on the Qinghai-Tibet Plateau (QTP) of China. The soil warming at 0.8-1.1 degrees C above the control in the two experiments did not significantly affect soil pH, bulk density, total carbon, nitrogen, phosphorus, organic carbon, available phosphorus, NO3-N, microbial biomass C, N, P, and cellulase, catalase, phosphatase activities. NH4-N and soil urease were significantly increased, but soil moisture was significantly reduced from both short and long-term warming. These findings suggested that short and long-term experimental warming might have the similar effects on soil nutrient levels, microbial biomass and enzyme activities in an alpine meadow ecosystem on the QTP. (C) 2014 Elsevier Ltd. All rights reserved.

分类号： S1

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