Cultivation of non-irrigated spring wheat in temperate free-grazing steppe improved both ecosystem and canopy water use efficiency
文献类型：期刊论文
| 作者 | Li, Yuzhe3; Zhang, Xinyuan2,3; Hu, Zhongmin1; Shao, Quanqin3; Fan, Jiangwen3; Chen, Zhi4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-01-10 |
| 卷号 | 803页码:11 |
| 关键词 | Temperate steppe Water use efficiency Steppe land use Grassland cultivation Free grazing |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2021.149948 |
| 通讯作者 | Li, Yuzhe(liyuzhe@igsnrr.ac.cn) ; Shao, Quanqin(Shaoqq@igsnrr.ac.cn) |
| 英文摘要 | The temperate steppe in northern China is important for sandstorm control and food/livestock production. Understanding the influence and regulatory control of cultivation on the water balance and water use efficiency (WUE) of this water-limited region would promote the sustainability of local ecosystem and food supply. This study combined eddy covariance system observational data and the Shuttleworth-Wallace model to investigate evapotranspiration (ET) and its composition in paired sites, including a free-grazing steppe site and an adjacent site reclaimed for spring wheat cultivation in Xilinhot, Inner Mongolia. Further, analysis of the WUE of both the ecosystem (WUEE) and the canopy (WUEC) under the two sites showed that the mean daily gross primary productivity (GPP) of the cultivation site was 3.84 gC.m(-2).d(-1), i.e., 15.7% higher than that of the free-grazing site (3.32 gC.m(-2).d(-1)). Compared with the free-grazing site (1.76 kgH(2)O.m(-2).d(-1)), the mean daily ET of the cultivation site (1.40 kgH(2)O.m(-2).d(-1)) was reduced by 20.7%. The difference in ET was due mainly to suppression of evaporation at the cultivation site from increased shading associated with a higher leaf area index (LAI). The largely increased GPP of the cultivation site fundamentally contributed to the 54.7% higher WUEC (4.75 gC.kg(-1)H(2)O) in comparison with the free-grazing site (3.08 gC.kg(-1)H(2)O). The WUEE of the cultivation site was 57.9% higher than that of the free-grazing site. The variation of transpiration of the free-grazing site explained 64% of the change of WUEC. These results indicate that land use differences in the temperate steppe area changed vegetation productivity substantially. Moreover, ecosystem ET and its composition, as well as large-scale land use change, might influence the regional water use pattern and mass balance. Our findings help clarify the impact of typical land use change on regional WUE, and could promote development of visionary and effective strategies for the use of the limited resources in arid-semiarid regions. (C) 2021 Elsevier B.V. All rights reserved. |
| WOS关键词 | WINTER-WHEAT ; EDDY COVARIANCE ; RIVER-BASIN ; EVAPOTRANSPIRATION ; PATTERNS ; ENERGY ; CROP |
| 资助项目 | National Key Research and Development Program of China[2017YFA0604801] ; National Key Research and Development Program of China[2017YEC0506500] ; Natural Science Foundation of China[41971276] ; second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0608] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000709082400003 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; Natural Science Foundation of China ; second Tibetan Plateau Scientific Expedition and Research Program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167223]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Yuzhe; Shao, Quanqin |
| 作者单位 | 1.South China Normal Univ, Sch Geog, Shipai Campus, Guangzhou 510631, Peoples R China 2.China Univ Geosci, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Synth Res Ctr,Network Observat & Modeling, Chinese Ecosyst Res Network,Key Lab Ecosyst, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuzhe,Zhang, Xinyuan,Hu, Zhongmin,et al. Cultivation of non-irrigated spring wheat in temperate free-grazing steppe improved both ecosystem and canopy water use efficiency[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,803:11. |
| APA | Li, Yuzhe,Zhang, Xinyuan,Hu, Zhongmin,Shao, Quanqin,Fan, Jiangwen,&Chen, Zhi.(2022).Cultivation of non-irrigated spring wheat in temperate free-grazing steppe improved both ecosystem and canopy water use efficiency.SCIENCE OF THE TOTAL ENVIRONMENT,803,11. |
| MLA | Li, Yuzhe,et al."Cultivation of non-irrigated spring wheat in temperate free-grazing steppe improved both ecosystem and canopy water use efficiency".SCIENCE OF THE TOTAL ENVIRONMENT 803(2022):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。