Characterizing spatial, diurnal, and seasonal patterns of agricultural irrigation expansion-induced cooling in Northwest China from 2000 to 2020
文献类型：期刊论文
| 作者 | Zhang, Chao4; Ge, Quansheng; Dong, Jinwei; Zhang, Xuezhen; Li, Yan5,6; Han, Songjun1,3 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2023-03-01 |
| 卷号 | 330页码:109304 |
| 关键词 | Irrigation expansion Climatic effects Land surface temperature Albedo ET Northwest China |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2022.109304 |
| 文献子类 | Article |
| 英文摘要 | In the last two decades, agricultural irrigation areas expanded rapidly in arid Northwest China (NWC, including North and South Xinjiang and Hexi Corridor) and altered local and regional climates. However, the increasing irrigation's climatic effects with underlying biophysical mechanisms have rarely been investigated. Here we characterized the impact patterns of irrigation expansion on land surface temperature (LST) in NWC from spatial, diurnal, and seasonal dimensions from 2000 to 2020; we then decomposed the LST changes related to multiple biophysical components using the energy balance equation and quantified the contributions of albedo and evapotranspiration (ET) to LST changes based on partial correlation and dominance analyses. We found the space-and-time method can better represent the cooling effects of long-term irrigation expansion than the space -for-time method, despite that they derived similar cooling trends. The cooling effects were most evident in South Xinjiang, followed by North Xinjiang and Hexi Corridor, and varied in different irrigation expansion sources. Specifically, more intensive cooling occurred in new irrigated areas from unused lands (-0.69 +/- 0.02 K) than that from grasslands (-0.47 +/- 0.05 K) and forests (-0.28 +/- 0.04 K). The cooling effects were dominated by marked daytime cooling compared to negligible nighttime warming. Seasonally, the cooling effects were concentrated in the growing season (May to September), especially in July and August. LST changes related to latent heat and sensible heat fluxes significantly surpassed other biophysical components. The changes in ET and albedo jointly modulated LST variations and increased ET dominated the daytime cooling effect (r = 0.52, p < 0.001) with a relative importance of over 55%, especially in North Xinjiang. But the ET-dominated cooling would be dampened by enhanced precipitation, implying the non-trivial impact of background climate. This study can provide important references for evaluating the climatic effects caused by irrigation expansion in arid regions and for improving the climate models. |
| WOS关键词 | LAND-COVER CHANGE ; SURFACE-TEMPERATURE ; BACKGROUND CLIMATE ; IMPACTS ; AFFORESTATION ; MANAGEMENT ; TRENDS ; ALBEDO ; BUDGET ; SCALE |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000964760400001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/190543]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Beijing Normal Univ, Inst Land Surface Syst & Sustainable Dev, Fac Geog Sci, Beijing 100875, Peoples R China 2.Natl Ctr Efficient Irrigat Engn & Technol Res, Beijing 100038, Peoples R China 3.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 5.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resources Ecol, Beijing 100875, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Chao,Ge, Quansheng,Dong, Jinwei,et al. Characterizing spatial, diurnal, and seasonal patterns of agricultural irrigation expansion-induced cooling in Northwest China from 2000 to 2020[J]. AGRICULTURAL AND FOREST METEOROLOGY,2023,330:109304. |
| APA | Zhang, Chao,Ge, Quansheng,Dong, Jinwei,Zhang, Xuezhen,Li, Yan,&Han, Songjun.(2023).Characterizing spatial, diurnal, and seasonal patterns of agricultural irrigation expansion-induced cooling in Northwest China from 2000 to 2020.AGRICULTURAL AND FOREST METEOROLOGY,330,109304. |
| MLA | Zhang, Chao,et al."Characterizing spatial, diurnal, and seasonal patterns of agricultural irrigation expansion-induced cooling in Northwest China from 2000 to 2020".AGRICULTURAL AND FOREST METEOROLOGY 330(2023):109304. |
入库方式： OAI收割
来源：地理科学与资源研究所
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