Increased background precipitation masks the moisture deficit caused by crop greening in Northeast China
文献类型：期刊论文
| 作者 | Yu, Lingxue1,2; Li, Xuan1; Bu, Kun1; Yan, Fengqin4; Zhang, Shuwen1; Liu, Tingxiang3 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 623页码:10 |
| ISSN号 | 0022-1694 |
| 关键词 | Increased crop growth Moisture feedback Background precipitation WRF Northeast China |
| DOI | 10.1016/j.jhydrol.2023.129857 |
| 通讯作者 | Liu, Tingxiang(liutingxiang@ccsfu.edu.cn) |
| 英文摘要 | The discrepancy between water resource availability and agricultural production has become a dominant constraint on the sustainable development of agriculture. Recent satellite records have documented increasing vegetation growth since the 21st century, and this so-called "vegetation greening" has been unprecedented in the agricultural region of Northeast China. However, the influence of increased crop growth on regional water resources through the alteration of hydrological cycling remains unclear. This study investigated the impact of crop greening on the regional water balance in Northeast China using time-series satellite and observational records, machine learning, and numerical scenario simulations from WRF. Our results indicate that the enhanced water cycling during 2001-2020 in this region was characterized by a significant increasing trend in evapotranspiration, precipitation, and soil moisture. We found a complex sensitivity to the leaf area index (LAI) across Northeast China, with positive sensitivity in the southwestern regions and negative sensitivity in the typical black soil zones. The downwind precipitation induced by crop greening suggests that at the regional scale, the landscape pattern may play a more significant role in determining the water cycling response to crop greening. Our data driven and model-driven results indicate that the background precipitation increase was the dominant contributor to the soil moisture increase, which masked the water deficit caused by crop greening. We also found that the continuous precipitation increasing trend projected by CMIP6 could further relieve conflicts between agriculture and water resources. In summary, our study provides insights into the impact of crop greening on the regional water balance in Northeast China and highlights the importance of considering both landscape patterns and background precipitation changes in understanding the water cycling response to crop greening. |
| WOS关键词 | IMPACT ; WATER ; PLATEAU ; CLIMATE ; TRENDS ; CARBON ; MODEL ; EARTH |
| 资助项目 | Strategic Priority Research Program (A) of the Chinese Academy of Sciences[XDA28080503] ; National Natural Science Foundation of China[42071025] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2023240] ; 14th Five-Year Network Security and Informatization Plan of the Chinese Academy of Sciences[WX145XQ06-07] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001038796300001 |
| 资助机构 | Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; 14th Five-Year Network Security and Informatization Plan of the Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196061]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Tingxiang |
| 作者单位 | 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun, Peoples R China 2.Chinese Acad Sci, Remote Sensing & Geog Informat Res Ctr, Changchun Jingyuetan Remote Sensing Observat Stn, Changchun 130102, Peoples R China 3.Changchun Normal Univ, Coll Geog Sci, Changchun, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Lingxue,Li, Xuan,Bu, Kun,et al. Increased background precipitation masks the moisture deficit caused by crop greening in Northeast China[J]. JOURNAL OF HYDROLOGY,2023,623:10. |
| APA | Yu, Lingxue,Li, Xuan,Bu, Kun,Yan, Fengqin,Zhang, Shuwen,&Liu, Tingxiang.(2023).Increased background precipitation masks the moisture deficit caused by crop greening in Northeast China.JOURNAL OF HYDROLOGY,623,10. |
| MLA | Yu, Lingxue,et al."Increased background precipitation masks the moisture deficit caused by crop greening in Northeast China".JOURNAL OF HYDROLOGY 623(2023):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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