Arid
DOI10.1007/s11104-017-3288-8
Responses of litter decomposition and nutrient release rate to water and nitrogen addition differed among three plant species dominated in a semi-arid grassland
Wang, Xue1,2,3; Xu, Zhuwen1; Lu, Xiaotao1; Wang, Ruzhen1; Cai, Jiangping1,3; Yang, Shan1,4; Li, Mai-He1,2; Jiang, Yong1
通讯作者Li, Mai-He ; Jiang, Yong
来源期刊PLANT AND SOIL
ISSN0032-079X
EISSN1573-5036
出版年2017
卷号418期号:1-2页码:241-253
英文摘要

Precipitation and nitrogen (N) deposition are predicted to increase in northern China. The present paper aimed to better understand how different dominant species in semi-arid grasslands in this region vary in their litter decomposition and nutrient release responses to increases in precipitation and N deposition.


Above-ground litter of three dominant species (two grasses, Agropyron cristatum and Stipa krylovii, and one forb, Artemisia frigida) was collected from areas without experimental treatments in a semi-arid grassland in Inner Mongolia. Litter decomposition was studied over three years to determine the effects of water and N addition on litter decomposition rate and nutrient dynamics.


Litter mass loss and nutrient release were faster for the forb species than for the two grasses during decomposition. Both water and N addition increased litter mass loss of the grass A. cristatum, while the treatments showed no impacts on that of the forb A. frigida. Supplemental N had time-dependent, positive effects on litter mass loss of the grass S. krylovii. During the three-year decomposition study, the release of N from litter was inhibited by N addition for the three species, and it was promoted by water addition for the two grasses. Across all treatments, N and potassium (K) were released from the litter of all three species, whereas calcium (Ca) was accumulated. Phosphorus (P) and magnesium (Mg) were released from the forb litter but accumulated in the grass litter after three years of decomposition.


Our findings revealed that the litter decomposition response to water and N supplementation differed among dominant plant species in a semi-arid grassland, indicating that changes in dominant plant species induced by projected increases in precipitation and N deposition are likely to affect litter decomposition, nutrient cycling, and further biogeochemical cycles in this grassland. The asynchronous nutrient release of different species’ litter found in the present study highlights the complexity of nutrient replenishment from litter decomposition in the temperate steppe under scenarios of enhancing precipitation and N deposition.


英文关键词Litter mass loss Nitrogen deposition Nutrient release Precipitation Perennial forbs Perennial grasses Temperate steppe
类型Article
语种英语
国家Peoples R China ; Switzerland
收录类别SCI-E
WOS记录号WOS:000411232600019
WOS关键词INNER-MONGOLIA ; TERRESTRIAL ECOSYSTEMS ; LAND-USE ; AVAILABILITY ; QUALITY ; CHINA ; COMMUNITIES ; DEPOSITION ; FORESTS ; CARBON
WOS类目Agronomy ; Plant Sciences ; Soil Science
WOS研究方向Agriculture ; Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201508
作者单位1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China;
2.Swiss Fed Res Inst WSL, Forest Dynam, Zuercherstr 111, CH-8903 Birmensdorf, Switzerland;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
4.Shenyang Agr Univ, Coll Land & Environm, 120 Dongling Rd, Shenyang 110866, Liaoning, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xue,Xu, Zhuwen,Lu, Xiaotao,et al. Responses of litter decomposition and nutrient release rate to water and nitrogen addition differed among three plant species dominated in a semi-arid grassland[J],2017,418(1-2):241-253.
APA Wang, Xue.,Xu, Zhuwen.,Lu, Xiaotao.,Wang, Ruzhen.,Cai, Jiangping.,...&Jiang, Yong.(2017).Responses of litter decomposition and nutrient release rate to water and nitrogen addition differed among three plant species dominated in a semi-arid grassland.PLANT AND SOIL,418(1-2),241-253.
MLA Wang, Xue,et al."Responses of litter decomposition and nutrient release rate to water and nitrogen addition differed among three plant species dominated in a semi-arid grassland".PLANT AND SOIL 418.1-2(2017):241-253.
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