Use of remote sensing and GIS to assess the effects of agricultural land quality on spatial extension of construction land in Chengdu
文献类型：会议论文
| 作者 | Pan Hongyi1,2; Zhou Jieming3; He Wei3; Jiang Guiguo3; Zhou Wancun2 |
| 出版日期 | 2009 |
| 会议名称 | Second International Conference on Earth Observation for Global Changes |
| 会议日期 | 2009 |
| 会议地点 | Chengdu, China |
| 关键词 | Agriculture Geographic information systems Remote sensing Fractal analysis |
| 卷号 | 7471 |
| 期号 | 8 |
| 页码 | 747105-1-747105-8 |
| 通讯作者 | Zhou Jieming |
| 英文摘要 | As a major commodity grain base in the Chengdu Plain, the city of Chengdu has played a significant role in the grain security of the Sichuan Province and the stability of national economy. However, with the urbanization process, the cultivated land quantity reduces and quality drops, which further affect the security of the grain production. In this study, we integrate remote sensing and geographic information systems to detect land-use change and reveal the increase in urban built-up land between 1992 and 2002. We compute the indicators of barycenters transformation and landscape index to illustrate the spatial expansion of the built-up land in Chengdu. The result shows that the built-up land increased from 31280 hm2 to 41196 hm2. The net gain of the built-up land was 9916 hm2 between 1992 and 2002. The quality of the cultivated land was in the third, fourth, fifth, and sixth grades, occupying 0.02%, 87.70%, 5.53%, and 6.75%, respectively. The barycenter of the built-up land moved 0.87 km westward and 2.54 km northward, respectively. With the built-up land patches reducing from 6230 to 5510, their fractal dimensions and broken degree decreased from 1.069 to 1.032 during the ten years, and the average patch area increased from 5.02 hm2 to7.48 hm2. Finally, we propose a built-up land spatial expansion model based on the development stage and construction levels in Chengdu. |
| 收录类别 | EI |
| 合作状况 | 其它 |
| 会议主办者 | SPIE |
| 会议录 | Second International Conference on Earth Observation for Global Changes
 |
| 语种 | 英语 |
| ISSN号 | 9780819477743 |
| ISBN号 | 0277-786X |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2234]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） |
| 作者单位 | 1.aInstitute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041,Sichuan, China 2.bGraduate School, Chinese Academy of Sciences , Beijing 100049, China 3.Key Laboratory of Land Resources Evaluation and Monitoring of Southwest, Ministry of Education, Chengdu 610068, Sichuan, China |
| 推荐引用方式 GB/T 7714 | Pan Hongyi,Zhou Jieming,He Wei,et al. Use of remote sensing and GIS to assess the effects of agricultural land quality on spatial extension of construction land in Chengdu[C]. 见:Second International Conference on Earth Observation for Global Changes. Chengdu, China. 2009. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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