Cropland fallow reduces agricultural water consumption by 303 million tons annually in Gansu Province, China
文献类型：期刊论文
| 作者 | Song, Wen2; Song, Wei1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-06-25 |
| 卷号 | 879页码:163013 |
| 关键词 | Cropland fallow Fallow mapping Water-saving effect Land use China |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2023.163013 |
| 文献子类 | Article |
| 英文摘要 | The high-intensity utilization of global cropland causes water shortage and food crisis, which seriously affects the re-alization of SDG 2 (zero hunger), SDG 6 (clean water and sanitation) and SDG 15 (life on land), and threatens the sus-tainable social, economic and ecological development. Cropland fallow can not only improve the quality of cropland and maintain ecosystem balance, but also have a significant water-saving effect. However, in most developing coun-tries, such as China, cropland fallow has not yet been widely promoted, and there are few reliable fallow cropland fallow identification methods, making it even more challenging to assess the water-saving effect. To remedy this def-icit, we propose a framework for mapping cropland fallow and evaluating its water savings. First, we used the Landsat series of data to interpret the annual land use/cover changes in Gansu Province, China from 1991 to 2020. Subse-quently, the spatial-temporal variation of cropland fallow in Gansu province (giving up farming for one to two years) was mapped. Finally, we evaluated the water-saving effect of cropland fallow using evapotranspiration, precip-itation, irrigation maps, and crop-related data, instead of actual water consumption. The results showed that the map-ping accuracy of fallow land in Gansu Province was 79.50 %, which was higher than that of most known fallow mapping studies. From 1993 to 2018, the average annual fallow rate in Gansu Province, China, was 10.86 %, which was ata low level in arid/semi-arid regions worldwide. More importantly, from 2003 to 2018, cropland fallow reduces annual water consumption of 303.26 million tons in Gansu Province, accounting for 3.44 % of agricultural water use in Gansu Province and equivalent to the annual water demand of 655,000 people in Gansu Province. Based on our re-search, we speculate that the increasing pilot projects of cropland fallow in China can bring significant water-saving effects and help achieve China's Sustainable Development Goals. |
| 学科主题 | Environmental Sciences & Ecology |
| WOS关键词 | LAND FALLOW ; DATASET ; EVAPOTRANSPIRATION ; PERFORMANCE ; PROVISION ; ASSIST ; FOREST ; AREAS ; INDEX ; NDVI |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193514]  |
| 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 Univ Civil Engn & Architecture, Sch Geomat & Urban Spatial Informat, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Hebei Collaborat Innovat Ctr Urbanrural Integrat D, Shijiazhuang 050061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Wen,Song, Wei. Cropland fallow reduces agricultural water consumption by 303 million tons annually in Gansu Province, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,879:163013. |
| APA | Song, Wen,&Song, Wei.(2023).Cropland fallow reduces agricultural water consumption by 303 million tons annually in Gansu Province, China.SCIENCE OF THE TOTAL ENVIRONMENT,879,163013. |
| MLA | Song, Wen,et al."Cropland fallow reduces agricultural water consumption by 303 million tons annually in Gansu Province, China".SCIENCE OF THE TOTAL ENVIRONMENT 879(2023):163013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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