The Impact of Climate Change and Grain Planting Structure Change on Irrigation Water Requirement for Main Grain Crops in Mainland China
文献类型：期刊论文
| 作者 | Wang, Jiayue2; Xin, Liangjie1,3; Wang, Xue1,3; Jiang, Min4 |
| 刊名 | LAND
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 11期号:12页码:22 |
| 关键词 | water resources climate change planting structure change agricultural irrigation water requirement |
| DOI | 10.3390/land11122174 |
| 通讯作者 | Xin, Liangjie(xinlj@igsnrr.ac.cn) ; Wang, Xue(wangxue@igsnrr.ac.cn) |
| 英文摘要 | To understand the change in irrigation water requirement (IWR) in China under the changing climate conditions and grain planting structures, this paper focused on rice, wheat and maize and analyzed the IWR change in each county under the background of climate change and the adjustment of planting structure by means of the China Agro-Ecological Zones (China-AEZ) model. The results show that: (1) Climate change causes the increase of IWR. Compared with the 1961-1990 period, the average IWR of counties in China increased by 9.31 mm and 16.50% under the climate conditions of the 1981-2010 period. Regionally, the water consumption effect of climate change is stronger in water-poor areas than in water-rich areas. (2) Planting structure change causes the decrease of IWR. Compared with 1990, under the planting structure in 2014, the average IWR of counties in China decreased by 6.61 mm and 11.41%. Regionally, the water-saving effect of the change in planting structure in the north is stronger than that in the south. (3) With the change in climate conditions and planting structure, the average IWR of counties in China first increased and then decreased, with an overall increase of 2.06 mm and 3.56%. Regionally, the IWR in most parts of the country has shown a decreasing trend, while the IWR in northwestern and north China, where water resources are relatively scarce, has increased significantly. (4) Nationally, the change in IWR is dominated by climate change, and the overall trend is in the direction of water consumption. Therefore, adjusting the crop planting structure is a promising way to save irrigation water. To adapt to the pressures on water resources caused by climate change, the proportion of crops with water-saving advantages should be increased in the corresponding areas to achieve regional water savings. In northwest China, which mainly relies on irrigation water, many crops with low IWR should be planted, such as wheat and maize, while the planting proportion of rice should be reduced; furthermore, the planting proportion of wheat should be reduced, and the planting proportion of maize should be increased in north China. Finally, rice with high IWR should be more localized in central, southern and northeastern China. |
| WOS关键词 | WINTER-WHEAT ; SUMMER MAIZE ; MODEL ; 21ST-CENTURY ; CONSUMPTION ; SYSTEM ; YIELD ; PLAIN |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000901307900001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188341]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xin, Liangjie; Wang, Xue |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.China Agr Univ, Coll Land Sci & Technol, Beijing 100193, 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, Aerosp Informat Res Inst, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jiayue,Xin, Liangjie,Wang, Xue,et al. The Impact of Climate Change and Grain Planting Structure Change on Irrigation Water Requirement for Main Grain Crops in Mainland China[J]. LAND,2022,11(12):22. |
| APA | Wang, Jiayue,Xin, Liangjie,Wang, Xue,&Jiang, Min.(2022).The Impact of Climate Change and Grain Planting Structure Change on Irrigation Water Requirement for Main Grain Crops in Mainland China.LAND,11(12),22. |
| MLA | Wang, Jiayue,et al."The Impact of Climate Change and Grain Planting Structure Change on Irrigation Water Requirement for Main Grain Crops in Mainland China".LAND 11.12(2022):22. |
入库方式： OAI收割
来源：地理科学与资源研究所
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