Estimation of land production and its response to cultivated land conversion in North China Plain
文献类型：期刊论文
| 作者 | Jiang Qunou(姜群鸥) ; Deng, XZ ; Zhan, JY ; He, SJ |
| 刊名 | CHINESE GEOGRAPHICAL SCIENCE
 |
| 出版日期 | 2011 |
| 卷号 | 21期号:6页码:685-694 |
| 关键词 | land productivity land production cultivated land cultivated land conversion North China Plain |
| 通讯作者 | Deng, XZ |
| 英文摘要 | Food safety and its related influencing factors in China are the hot research topics currently, and cultivated land conversion is one of the significant factors influencing food safety in China. Taking the North China Plain as the study area, this paper examines the changes of cultivated land area using satellite images, estimates land productivity from 1985 to 2005 using the model of Estimation System for Land Productivity (ESLP), and analyzes the impact of cultivated land conversion on the land production. Compared with the grain yield data from statistical yearbooks, the results indicate that ESLP model is an effective tool for estimating land productivity. Land productivity in the North China Plain showed a slight decreasing trend from 1985 to 2005, spatially, increased from the north to the south gradually, and the net changes varied in different areas. Cultivated land area recorded a marginal decrease of 8.0 x 10(5) ha, mainly converted to other land uses. Cultivated land conversion had more significant negative impacts on land production than land productivity did. Land production decreased by about 6.48 x 10(6) t caused by cultivated land conversion between 1985 and 2005, accounting for 91.9% of the total land production reduction. Although the land productivity increased in Anhui and Jiangsu provinces, it can not offset the overall adverse effects caused by cultivated land conversion. Therefore, there are significant meanings to control the cultivated land conversion and improve the land productivity for ensuring the land production in the North China Plain. |
| 收录类别 | SCI |
| 资助信息 | Major State Basic Research Development Program of China 2010CB950904;National Natural Science Foundation of China 70503025 40801231;Chinese Academy of Sciences KZCX2-YW-305-2 |
| 语种 | 英语 |
| 公开日期 | 2012-05-30 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/21951]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Jiang Qunou,Deng, XZ,Zhan, JY,et al. Estimation of land production and its response to cultivated land conversion in North China Plain[J]. CHINESE GEOGRAPHICAL SCIENCE,2011,21(6):685-694. |
| APA | Jiang Qunou,Deng, XZ,Zhan, JY,&He, SJ.(2011).Estimation of land production and its response to cultivated land conversion in North China Plain.CHINESE GEOGRAPHICAL SCIENCE,21(6),685-694. |
| MLA | Jiang Qunou,et al."Estimation of land production and its response to cultivated land conversion in North China Plain".CHINESE GEOGRAPHICAL SCIENCE 21.6(2011):685-694. |
入库方式： OAI收割
来源：地理科学与资源研究所
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