ZHANG Wan-ping,LUO Zhan-fu,MENG Yue-nan,et al.Land Use Change and Ecological Environment Effects of Resources-based Cities—A Case Study of Baiyin City in Gansu Province[J].Research of Soil and Water Conservation,2013,20(06):251-255.
资源型城市土地利用变化及生态环境效应研究——以白银市区为例
- Title:
- Land Use Change and Ecological Environment Effects of Resources-based Cities—A Case Study of Baiyin City in Gansu Province
- 分类号:
- F301.24;X171.1
- 摘要:
- 资源型城市因“矿竭城衰”实施的产业转型可影响土地利用变化和生态环境状况，协调土地利用与生态环境的发展关系对改变传统的城市土地利用模式，促进人与自然和谐发展具有重要意义。基于ENVI软件，选取资源型城市白银市区1990年、2000年和2011年3期Landsat TM影像为主要数据源，运用土地利用动态度模型、动态转移矩阵、区域生态环境质量指数模型和区域生态环境质量贡献指数模型，定量分析了研究区域的土地利用变化特征及其生态环境效应。结果表明，21 a期间，白银市区建设用地面积一直增长趋势，耕地面积先增后减，未利用地面积一直呈减少趋势，林地、草地、水体基数小，面积变化总量不大；从整体来看，白银市区生态环境质量指数从1990年的0.087上升到2011年的0.126，生态环境质量朝着健康方向发展；耕地和未利用地对白银市区生态环境质量改善的贡献率最高，林地和水体对白银市区生态环境质量退化的贡献率最高；耕地、未利用地、林地、水体是影响区域生态环境变化的重要因素，其中耕地是主导因素。
- Abstract:
- Industrial transformation of resource cities due to the exhaustion of mineral resources affects the urban land use and eco-environment situation. The coordination of development relationship between land use and eco-environment has an important meaning for changing the traditional urban land use pattern and promoting the harmonious development between human and nature. With 1990，2000 and 2011，3 periods landsat TM satellite remote sensing images of Baiyin resources city as the main data source，land use change characteristics and effect on the ecological environment were analyzed and evaluated based on the ENVI software from 1990 to 2011， and using several kinds of mode， such as single land use type dynamic degree model， dynamic transfer matrix， regional ecological environmental quality index model， regional ecological environmental quality contribution index model. The results showed that construction land area has been growing， cultivated land area firstly increased and then decreased， unused land area has been in reducing trend， woodland， grassland，water area changed little because of their small initial area in Baiyin city during 21 years； ecological environment quality will develop toward a healthy state overall because ecological environment quality index increased from 0.087 to 0.126； contribution rates of cultivated land and unused land were the highest to ecological environment quality improvement, while contribution rates of forestland and water were the highest to ecological environment quality degradation in BaiYin city where cultivated land，unused land water were key factors affecting the regional ecological environment change，and cultivated land was the dominant factor among all factors.
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备注/Memo
收稿日期:2013-03-21;改回日期:2013-04-10。
作者简介:张万萍(1986-),女,甘肃永登人,硕士研究生,主要研究方向:城市发展与规划设计。E-mail:zhangyouyuanyuwan@163.com
通讯作者:雒占福(1975-),男,甘肃通渭人,副教授,硕士生导师,主要研究方向:城市发展与规划设计。E-mail:luozf200@163.com