Use of remote sensing and GIS to assess the effects of agricultural landquality 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, Wancun1 |
| 出版日期 | 2009 |
| 会议日期 | May 25, 2009 - May 29, 2009 |
| 会议地点 | Chengdu |
| 关键词 | Built-up land spatial expansion agricultural land quality and quantity Chengdu |
| 卷号 | 7471 |
| DOI | 10.1117/12.836320 |
| 页码 | 747105 |
| 国家 | China |
| 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 landbetween 1992 and 2002. We compute the indicators of barycenters transformation and landscape index toillustrate the spatial expansion of the built-up land in Chengdu. The result shows that the built-up landincreased 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 to5510, their fractal dimensions and broken degree decreased from 1.069 to 1.032 during the ten years, andthe average patch area increased from 5.02 hm2 to7.48 hm2. Finally, we propose a built-up land spatialexpansion model based on the development stage and construction levels in Chengdu. |
| 源文献作者 | SPIE |
| 产权排序 | 1 |
| 会议录 | Proceedings of SPIE - The International Society for Optical Engineering
 |
| 语种 | 英语 |
| ISSN号 | 0277786X |
| ISBN号 | 9780819477743 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/25943]  |
| 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.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China; 2.Graduate School, Chinese Academy of Sciences, Beijing 100049, China; 3.Key Laboratory of Land Resources Evaluation, 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 landquality on spatial extension of construction land in chengdu[C]. 见:. Chengdu. May 25, 2009 - May 29, 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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