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Precipitation and Nitrogen Deposition Alter Litter Decomposition Dynamics in Semiarid Temperate Steppe in Inner Mongolia, China

文献类型：期刊论文

作者Yan, Zhongqing1,2; Qi, Yuchun2; Dong, Yunshe2; Peng, Qin2; Guo, Shufang1,2; He, Yunlong1,2; Li, Zhaolin1,2
刊名RANGELAND ECOLOGY & MANAGEMENT
出版日期2018-03-01
卷号71期号:2页码:220-227
关键词atmospheric nitrogen deposition increased precipitation litter decomposition semiarid temperate grassland
ISSN号1550-7424
DOI10.1016/j.rama.2017.12.003
通讯作者Dong, Yunshe(Dongys3736@163.com)
英文摘要Plant litter decomposition is one of the most important links connecting plants to the soil through the carbon (C) and nitrogen (N) cycles. Climate change scenarios predict changes in precipitation and N deposition, and previous studies have demonstrated that increases in the availability of water and N affect the litter decomposition rate and nutrient release. We studied the effects of increased N deposition and precipitation on changes in the remaining mass and the C and N contents of shoot litter after decomposition in a typical steppe in Inner Mongolia, China. The treatments included the addition of NH4NO3 at rates equivalent to 0, 25, 50, and 100 kg.N.ha(-2)yr(-1) with and without added water. The addition of water proved to be a more effective practice than amendment with NH4NO3 for improving the litter decomposition rate; the addition of water significantly increased the rate of litter decomposition (P < 0.001), whereas the addition of N alone had no apparent effect on litter mass loss. However, a repeated measures analysis of variance (ANOVA) showed that the interaction of water and N significantly affected both mass loss and litter N content (P < 0.05), and a linear relationship was identified between litter mass loss and litter decomposition time (P < 0.001). No correlation was found between litter mass loss and organic C content, but a significant positive correlation was found between residual litter mass and N content (P < 0.01). Although the study was conducted over a relatively short period, our results indicate that increased precipitation could potentially promote litter decomposition, whereas increased N input has little effect. The effects of time on litter mass loss and residual C and N concentrations indicate the need for long-term trials that measure the complete process of litter decomposition and the peaks of C and N release. (C) 2017 The Society for Range Management. Published by Elsevier Inc. All rights reserved.
WOS关键词LONG-TERM DECOMPOSITION ; TERRESTRIAL ECOSYSTEMS ; REACTIVE NITROGEN ; NUTRIENT RELEASE ; TROPICAL FORESTS ; CLIMATE-CHANGE ; NORTH-AMERICA ; SOIL FAUNA ; LAND-USE ; GRASSLAND
资助项目National Natural Science Foundation of China[41330528] ; National Natural Science Foundation of China[41573131] ; National Natural Science Foundation of China[41373084] ; National Natural Science Foundation of China[41673086] ; Special Fund for Agro-Scientific Research in the Public Interest[201203012-6]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000426258900011
出版者SOC RANGE MANAGEMENT
资助机构National Natural Science Foundation of China ; Special Fund for Agro-Scientific Research in the Public Interest
源URL[http://ir.igsnrr.ac.cn/handle/311030/57196]  
专题中国科学院地理科学与资源研究所
通讯作者Dong, Yunshe
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Zhongqing,Qi, Yuchun,Dong, Yunshe,et al. Precipitation and Nitrogen Deposition Alter Litter Decomposition Dynamics in Semiarid Temperate Steppe in Inner Mongolia, China[J]. RANGELAND ECOLOGY & MANAGEMENT,2018,71(2):220-227.
APA Yan, Zhongqing.,Qi, Yuchun.,Dong, Yunshe.,Peng, Qin.,Guo, Shufang.,...&Li, Zhaolin.(2018).Precipitation and Nitrogen Deposition Alter Litter Decomposition Dynamics in Semiarid Temperate Steppe in Inner Mongolia, China.RANGELAND ECOLOGY & MANAGEMENT,71(2),220-227.
MLA Yan, Zhongqing,et al."Precipitation and Nitrogen Deposition Alter Litter Decomposition Dynamics in Semiarid Temperate Steppe in Inner Mongolia, China".RANGELAND ECOLOGY & MANAGEMENT 71.2(2018):220-227.

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来源：地理科学与资源研究所

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