中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 植物研究所
  3. 中国科学院植物研究所
  4. 植被与环境变化国家重点实验室
Responses of ecosystem water use efficiency to spring snow and summer water addition with or without nitrogen addition in a temperate steppe

文献类型：期刊论文

作者Zhang, Xiaolin3; Zhai, Penghui1; Huang, Jianhui2; Zhao, Xiang; Dong, Kuanhu
刊名PLOS ONE
出版日期2018
卷号13期号:3
ISSN号1932-6203
DOI10.1371/journal.pone.0194198
文献子类Article
英文摘要Water use efficiency (WUE) is an important indicator of ecosystem functioning but how ecosystem WUE responds to climate change including precipitation and nitrogen (N) deposition increases is still unknown. To investigate such responses, an experiment with a randomized block design with water (spring snowfall or summer water addition) and nitrogen addition was conducted in a temperate steppe of northern China. We investigated net ecosystem CO2 production (NEP), gross ecosystem production (GEP) and evapotranspiration (ET) to calculate ecosystem WUE (WUEnep = NEP/ET or WUEgep = GEP/ET) under spring snow and summer water addition with or without N addition from 2011 to 2013. The results showed that spring snow addition only had significant effect on ecosystem WUE in 2013 and summer water addition showed positive effect on ecosystem WUE in 2011 and 2013, as their effects on NEP and GEP is stronger than ET. N addition increased ecosystem WUE in 2012 and 2013 both in spring snow addition and summer water addition for its increasing effects on NEP and GEP but no effect on ET. Summer water addition had less but N addition had greater increasing effects on ecosystem WUE as natural precipitation increase indicating that natural precipitation regulates ecosystem WUE responses to water and N addition. Moreover, WUE was tightly related with atmospheric vapor-pressure deficit (VPD), photosynthetic active radiation (PAR), precipitation and soil moisture indicating the regulation of climate drivers on ecosystem WUE. In addition, it also was affected by aboveground net primary production (ANPP). The study suggests that ecosystem WUE responses to water and N addition is determined by the change in carbon process rather than that in water process, which are regulated by climate change in the temperate steppe of northern China.
学科主题Multidisciplinary Sciences
出版地SAN FRANCISCO
WOS关键词VAPOR-PRESSURE DEFICIT ; PRECIPITATION GRADIENT ; EXPERIMENTAL MANIPULATIONS ; SEMINATURAL GRASSLAND ; CLIMATE-CHANGE ; CARBON FLUXES ; FOREST ; EVAPOTRANSPIRATION ; PATTERNS ; WINTER
语种英语
WOS记录号WOS:000427189300043
出版者PUBLIC LIBRARY SCIENCE
资助机构State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University [SKLGAE201604] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31430016, 31670483, 31572452]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/20376]  
专题植被与环境变化国家重点实验室
作者单位1.Lanzhou Univ, State Key Lab Grassland Agroecosyst, Lanzhou, Gansu, Peoples R China
2.Shanxi Agr Univ, Coll Agr, Taigu, Peoples R China
3.Shanxi Agr Univ, Coll Anim Sci & Vet Med, Taigu, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xiaolin,Zhai, Penghui,Huang, Jianhui,et al. Responses of ecosystem water use efficiency to spring snow and summer water addition with or without nitrogen addition in a temperate steppe[J]. PLOS ONE,2018,13(3).
APA Zhang, Xiaolin,Zhai, Penghui,Huang, Jianhui,Zhao, Xiang,&Dong, Kuanhu.(2018).Responses of ecosystem water use efficiency to spring snow and summer water addition with or without nitrogen addition in a temperate steppe.PLOS ONE,13(3).
MLA Zhang, Xiaolin,et al."Responses of ecosystem water use efficiency to spring snow and summer water addition with or without nitrogen addition in a temperate steppe".PLOS ONE 13.3(2018).

入库方式： OAI收割

来源：植物研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。