Mapping Abandoned Cropland Changes in the Hilly and Gully Region of the Loess Plateau in China
文献类型：期刊论文
| 作者 | Wang, Yanwei1,2; Song, Wei2 |
| 刊名 | LAND
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 10期号:12页码:16 |
| 关键词 | abandoned cropland land use change Google Earth Engine Gaolan County China |
| DOI | 10.3390/land10121341 |
| 通讯作者 | Song, Wei(songw@igsnrr.ac.cn) |
| 英文摘要 | As a form of land marginalization, abandoned cropland has an important impact on food security and the effective supply of agricultural products. With rapid urbanization across the world, large areas of cropland are abandoned in some regions, especially in mountainous and hilly areas with poor terrain. Due to the fine fragmentation and scattered distribution of abandoned cropland, and considering differences in the abandoned and fallow time of cropland, it is difficult to extract information using remote sensing technology. Therefore, this paper proposes a change in the detection method for extracting abandoned cropland information based on identifying the annual land use trajectory. Based on Landsat satellite data, annual land use was mapped from 2011 to 2020 in Gaolan County, which is located in the hilly and gully region of the Loess Plateau of China, using the random forest classification method. Subsequently, abandoned cropland information in Gaolan County was extracted, based on the land use change trajectory and analysis of the influencing factors of abandoned land. The results showed that: (1) The overall accuracy of land use interpretation in Gaolan County ranged from 86.44% to 95.45%, from 2011 to 2020, with a kappa coefficient of up to 0.93, and the classification results were ideal. (2) The recall of extracted abandoned cropland was 81%, the extraction accuracy of which was relatively high. (3) From 2013 to 2020, the cropland abandonment rate in Gaolan County ranged from 8.41% to 19.65%, with an average of 14.55%, which increased and then decreased. The abandonment rate was highest in 2015 but it then decreased year by year. The average period of abandoned cropland was 4.2 years. (4) The influence factors of the plot scale explain the difference in the spatial distribution of cultivated land abandonment. The higher the slope condition, the lower the soil nutrient content and the greater the possibility of abandonment. |
| WOS关键词 | LAND ABANDONMENT ; FARMLAND ABANDONMENT ; MOUNTAIN AREAS ; RECULTIVATION ; SEGMENTATION ; HOUSEHOLD ; DRIVERS ; EUROPE |
| 资助项目 | Projects of National Natural Science Foundation of China[42071233] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0603] ; Strategic Priority Research of the Chinese Academy of Sciences[XDA20040201] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000738236900001 |
| 出版者 | MDPI |
| 资助机构 | Projects of National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research ; Strategic Priority Research of the Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/169031]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Song, Wei |
| 作者单位 | 1.Yangtze Univ, Sch Geosci, Wuhan 430100, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yanwei,Song, Wei. Mapping Abandoned Cropland Changes in the Hilly and Gully Region of the Loess Plateau in China[J]. LAND,2021,10(12):16. |
| APA | Wang, Yanwei,&Song, Wei.(2021).Mapping Abandoned Cropland Changes in the Hilly and Gully Region of the Loess Plateau in China.LAND,10(12),16. |
| MLA | Wang, Yanwei,et al."Mapping Abandoned Cropland Changes in the Hilly and Gully Region of the Loess Plateau in China".LAND 10.12(2021):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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