Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors
Previous analyses have shown that cropland in China is intensifying leading to an increase in crop production. However, these output measures leave the potential for further intensification largely unassessed. This study uses the harvested area gap (HAG), which expresses the amount of harvested area...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
IOP Publishing
2018
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/147112 |
| _version_ | 1855529707585404928 |
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| author | Yu, Qiangyi van Vliet, Jasper Verburg, Peter H. You, Liangzhi Yang, Peng Wu, Wenbin |
| author_browse | Verburg, Peter H. Wu, Wenbin Yang, Peng You, Liangzhi Yu, Qiangyi van Vliet, Jasper |
| author_facet | Yu, Qiangyi van Vliet, Jasper Verburg, Peter H. You, Liangzhi Yang, Peng Wu, Wenbin |
| author_sort | Yu, Qiangyi |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Previous analyses have shown that cropland in China is intensifying leading to an increase in crop production. However, these output measures leave the potential for further intensification largely unassessed. This study uses the harvested area gap (HAG), which expresses the amount of harvested area that can be gained if all existing cropland is harvested as frequently as possible, according to their potential limit for multi-cropping. Specifically, we calculate the HAG and changes in the HAG in China between 1981 and 2010. We further assess how climatic and land management factors affect these changes. We find that in China the HAG decreases between the 1980s and the 1990s, and subsequently increases between the 1990s and the 2000s, resulting in a small net increase for the entire study period. The initial decrease in the HAG is the result of an increase in the average multi-cropping index throughout the country, which is larger than the increase in the potential multi-cropping index as a result of the changed climatic factors. The subsequent increase in the HAG is the result of a decrease in average multi-cropping index throughout the country, in combination with a stagnant potential. Despite the overall increase in harvested area in China, many regions, e.g. Northeast and Lower Yangtze, are characterized by an increased HAG indicating their potential for further increasing the multi-cropping index. The study demonstrates the application of the HAG as a method to identify areas where the harvested area can increase to increase crop production, which is currently underexplored in scientific literature. |
| format | Journal Article |
| id | CGSpace147112 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | IOP Publishing |
| publisherStr | IOP Publishing |
| record_format | dspace |
| spelling | CGSpace1471122025-12-08T10:29:22Z Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors Yu, Qiangyi van Vliet, Jasper Verburg, Peter H. You, Liangzhi Yang, Peng Wu, Wenbin land management cropping patterns land-use change capacity development crop production harvesting frequency land use intensification food security multiple cropping climate change Previous analyses have shown that cropland in China is intensifying leading to an increase in crop production. However, these output measures leave the potential for further intensification largely unassessed. This study uses the harvested area gap (HAG), which expresses the amount of harvested area that can be gained if all existing cropland is harvested as frequently as possible, according to their potential limit for multi-cropping. Specifically, we calculate the HAG and changes in the HAG in China between 1981 and 2010. We further assess how climatic and land management factors affect these changes. We find that in China the HAG decreases between the 1980s and the 1990s, and subsequently increases between the 1990s and the 2000s, resulting in a small net increase for the entire study period. The initial decrease in the HAG is the result of an increase in the average multi-cropping index throughout the country, which is larger than the increase in the potential multi-cropping index as a result of the changed climatic factors. The subsequent increase in the HAG is the result of a decrease in average multi-cropping index throughout the country, in combination with a stagnant potential. Despite the overall increase in harvested area in China, many regions, e.g. Northeast and Lower Yangtze, are characterized by an increased HAG indicating their potential for further increasing the multi-cropping index. The study demonstrates the application of the HAG as a method to identify areas where the harvested area can increase to increase crop production, which is currently underexplored in scientific literature. 2018-02-27 2024-06-21T09:11:21Z 2024-06-21T09:11:21Z Journal Article https://hdl.handle.net/10568/147112 en Open Access IOP Publishing Yu, Qiangyi; van Vliet, Jasper; Verburg, Peter H.; You, Liangzhi; Yang, Peng; and Wu, Wenbin. 2018. Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors. Environmental Research Letters 13: 044006. https://doi.org/10.1088/1748-9326/aaafe0 |
| spellingShingle | land management cropping patterns land-use change capacity development crop production harvesting frequency land use intensification food security multiple cropping climate change Yu, Qiangyi van Vliet, Jasper Verburg, Peter H. You, Liangzhi Yang, Peng Wu, Wenbin Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors |
| title | Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors |
| title_full | Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors |
| title_fullStr | Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors |
| title_full_unstemmed | Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors |
| title_short | Harvested area gaps in China between 1981 and 2010: Effects of climatic and land management factors |
| title_sort | harvested area gaps in china between 1981 and 2010 effects of climatic and land management factors |
| topic | land management cropping patterns land-use change capacity development crop production harvesting frequency land use intensification food security multiple cropping climate change |
| url | https://hdl.handle.net/10568/147112 |
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