Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 0032-079X |
EISSN | 1573-5036 |
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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