| 吉林省耕地变化对粮食生产的影响 |
| |
| 引用本文： | 何艳芬,张柏,马超群.吉林省耕地变化对粮食生产的影响[J].地理学报(英文版),2004,14(1):56-62. |
| |
| 作者姓名： | 何艳芬 张柏 马超群 |
| |
| 作者单位： | 1. Northeast Inst. of Geography and Agricultural Ecology，CAS，Changchun 130012，China; 2. Chang'an University，Xi'an 710054，China |
| |
| 基金项目： | Knowledge Innovation Project of CAS，No.KZCX1-SW-19 |
| |
| 摘 要： | 1IntroductionThe quantity and quality of cropland guarantees the grain production (Feng, 2000), and the essence of cropland security is food security. Cropland security means the stability of total quantity of cropland, which also means stable quality, potential productivity and regional balance (Feng, 2000). With the development of urbanization and industrialization, more and more cropland is encroached, especially the cropland with great market-value (Cai, 2000; Ge, 2002; Richard, 2002), w…
|
| 关 键 词： | 耕地变化 粮食 农业生产 吉林 |
| 收稿时间： | 2003-07-08 |
The impact of dynamic change of cropland on grain production in Jilin |
| |
| He,Yanfen,Zhang,Bai,Ma,Chaoqun.The impact of dynamic change of cropland on grain production in Jilin[J].Journal of Geographical Sciences,2004,14(1):56-62. |
| |
| Authors: | He Yanfen Zhang Bai Ma Chaoqun |
| |
| Institution: | 1.Northeast Inst. of Geography and Agricultural Ecology,CAS,Changchun,China;2.Chang’an University,Xi’an,China |
| |
| Abstract: | The quantity and quality changes of cropland in Jilin province are analyzed by combining the statistics from 1949 to 1999 and land-use maps interpreted from TM images in 1986 and in 2000. In general, the decreasing trend of the cropland in Jilin province was derived from the statistic data in 1949-1999. While since 1983, the cropland area has increased slightly, because of the conversion from other land-use types to cropland. It is showed that the net increase of cropland was about 43.40 × 104 ha. While the quality change of the cropland can be seen from that mainly caused by the conversion from forestland, grassland to cropland and the change mainly took place in the west, where it is ecologically fragile. According to the spatial distribution model, the centroids' move of the cropland and the grain production are calculated, whose directions are not consistent. The impact of the dynamic change of the cropland on food security is further analyzed. |
| |
| Keywords: | dynamic change cropland temporal-spatial change GIS RS Jilin province |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《地理学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《地理学报(英文版)》下载免费的PDF全文 |
|
