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The impacts of precipitation increase and nitrogen addition on soil respiration in a semiarid temperate steppe
Zhang, Xiaolin; Tan, Yulian; Zhang, Bingwei; Li, Ang; Daryanto, Stefani1; Wang, Lixin1; Huang, Jianhui2
2017
发表期刊ECOSPHERE
ISSN2150-8925
卷号8期号:1
摘要Soil respiration, R-s, is strongly controlled by water availability in semiarid grasslands. However, how R-s is affected by precipitation change (either as rainfall or as snowfall) especially under increasing nitrogen (N) deposition has been uncertain. A manipulative experiment to investigate the responses of growing season R-s to changes in spring snowfall or summer rainfall with or without N addition was conducted in the semiarid temperate steppe of China during three hydrologically contrasting years. Our results showed that both spring snow addition and summer water addition significantly increased R-s by increasing soil moisture. The effect of spring snow addition only occurred in years with both relatively lower natural snowfall and later snowmelt time. Summer water addition showed a much stronger effect on R-s by increasing plant root growth and microbial activities, but the magnitude also largely depended on the possible legacy effect of previous year precipitation. Our results indicated that precipitation increase in the form of snowfall had weaker effects than that in the form of rainfall as the former only accounted for less than 30% of total precipitation. Compared with other ecosystem processes, R-s was less responsible for increase in N deposition as it did not increase root productivity and microbial activities in the soils. Our results provided field data constraints for modeling the ecosystem carbon balance under the future global change scenarios in semiarid grasslands.
关键词Inner Mongolia nitrogen addition snow addition soil respiration temperate typical steppe water addition
学科领域Plant Sciences ; Evolutionary Biology
DOI10.12705/665.34
收录类别SCI
语种英语
WOS关键词CO2 EFFLUX ; DIFFERENTIAL RESPONSES ; MICROBIAL RESPIRATION ; HETEROTROPHIC RESPIRATION ; INNER-MONGOLIA ; CLIMATE-CHANGE ; CARBON ; WATER ; SNOW ; GRASSLAND
WOS记录号WOS:000414549400033
出版者WILEY
文献子类Article
出版地HOBOKEN
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670483, 31430016] ; Strategic Priority Research Program on Soil and Microbes of the Chinese Academy of Sciences [XDB15010401]
作者邮箱jhhuang@ibcas.ac.cn
作品OA属性Bronze, Green Submitted
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/22341
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Indiana Univ Purdue Univ, Dept Earth Sci, Indianapolis, IN 46202 USA
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Xiaolin,Tan, Yulian,Zhang, Bingwei,et al. The impacts of precipitation increase and nitrogen addition on soil respiration in a semiarid temperate steppe[J]. ECOSPHERE,2017,8(1).
APA Zhang, Xiaolin.,Tan, Yulian.,Zhang, Bingwei.,Li, Ang.,Daryanto, Stefani.,...&Huang, Jianhui.(2017).The impacts of precipitation increase and nitrogen addition on soil respiration in a semiarid temperate steppe.ECOSPHERE,8(1).
MLA Zhang, Xiaolin,et al."The impacts of precipitation increase and nitrogen addition on soil respiration in a semiarid temperate steppe".ECOSPHERE 8.1(2017).
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