| 土地利用与土地覆被时空动态变化分析——以岷江上游地区为例 |
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| 引用本文： | 李爱农,周万村,江晓波,孙育秋,曾文蓉.土地利用与土地覆被时空动态变化分析——以岷江上游地区为例[J].地球信息科学,2003,5(2):100-104. |
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| 作者姓名： | 李爱农 周万村 江晓波 孙育秋 曾文蓉 |
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| 作者单位： | 中国科学院成都山地灾害与环境研究所, 成都 610041 |
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| 基金项目： | 中国科学院知识创新工程项目，四川省科技攻关项目，KZCXL-XW-319，，， |
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| 摘 要： | 全面、客观地反映土地动态变化有利于正确认识对土地资源的开发和利用,能为地区产业结构调整,制定可持续发展的土地管理和土地规划提供依据。多时相遥感数据已经被成功运用于研究土地变化,评估前期政策对环境和土地利用的影响1～5]。在遥感和GIS技术支持下,分析了岷江流域上游地区的土地利用/土地覆被状况及其1986～2000年的时空动态变化和驱动力影响。为保护该地区有限的珍贵林业资源,恢复长江上游的生态屏障作用和国土资源的有效可持续利用提供决策依据。
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| 关 键 词： | 岷江上游 遥感 地理信息系统 土地利用/土地覆被 动态变化 |
| 收稿时间： | 2002-11-08; |
| 修稿时间： | 2002年11月8日 |
The Analysis on the Spatiotemporal Dynamic Change of Land Use/Cover--Taking the Upper Reaches of Minjiang River as a Case |
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| LI Ainong,ZHOU Wancun,JIANG Xiaobo,SUN Yuqiu,ZENG Wenrong.The Analysis on the Spatiotemporal Dynamic Change of Land Use/Cover--Taking the Upper Reaches of Minjiang River as a Case[J].Geo-information Science,2003,5(2):100-104. |
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| Authors: | LI Ainong ZHOU Wancun JIANG Xiaobo SUN Yuqiu ZENG Wenrong |
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| Institution: | Chengdu Institute of Mountain Hazards and Environment, CAS, Chengdu 610041 |
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| Abstract: | Land is the carrier of human activities, therefore the dynamic change of land reflects the developing tendency of land use method and change of land cover.A comprehensive and objective reflection of land dynamic change is beneficial to reach a correct understanding of whether the development and use of land resources is reasonable, and to provide foundation for industrial structure adjustment of the area and for the formulating of long and sustainable development of land management and planning.The multi-temporal data of remote sensing have been used to investigate land use change.The information derived from remote sensing data is also valuable to evaluate the effects of previous environmental policy.The technology of remote sensing, which provides huge and abundant information source, is multi-temporal, high dynamic and macroscopic, while the technology of GIS performs the strong function of data processing, data management and spatial analysis, thus the combination of the two technologies, characterized by short period, high efficiency and low cost, which is better by far than traditional study methods, plays an essential role in land resource monitoring.The research establishes the interpreting signs by adopting respectively multi-band TM digital images in 1986, 1995 and 2000 with the combination of indoor material, outdoor investigation and expert experience.Furthermore, it also builds three-year basic database of land use/cover at a scale of 1∶100 000 and the dynamic database of 1986 to 1995 and 1995 to 2000, so that it finishes the edition, management and spatiotemporal analysis of database with the support of GIS.Through the research of land use/cover dynamic change of the upper reaches of Minjiang River from 1986 to 1995 by RS(Remote Sensing) and GIS(Geographical Information System), the quantitative illustration of the rapid decrease of forest zone of the area, and the large-scale increase in secondary grassland, it can be generalized that all these changes are due to the excessive and unreasonable land development of human race; and the land use/cover dynamic change and effect of policy driving force following 1995, such as converting farmland into forests and grassland and project for protecting natural forest, are analyzed in detail. The essay aims to provide some policy basis for protecting the limited and precious forest resources of the area, for restoring the ecological protective screen of the upper reaches of Minjiang River, and for the valid and sustainable use of territorial resources. |
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| Keywords: | The upper reaches of Minjiang River Remote Sensing Geographic Information System Land Use/Cover Dynamic Change |
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