...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISPRS International Journal of Geo-Information >The Ecological Security Pattern and Its Constraint on Urban Expansion of a Black Soil Farming Area in Northeast China
【24h】

The Ecological Security Pattern and Its Constraint on Urban Expansion of a Black Soil Farming Area in Northeast China

机译：东北黑土耕区生态安全格局及其对城市扩展的制约

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Rapid urbanization in China has increased the demand of land resources for urban areas and caused a series of environmental problems. Ecological security under the pressure of urban sprawl has become one typical indicator for illustrating regional environmental conditions and thus inform urban development. As an important farming area and one of the core economic development regions in northeast China, Changchun City is now confronted with severe contradictions between economic growth, habitat conservation and food security. Therefore, with the aim of developing an approach to optimize a regional ecological security pattern and land use structure, this study built a comprehensive ecological security pattern taking into account regional ecological processes including water regulation, soil and water conservation, species protection and recreation. Three patterns of ecological security were identified responding to different levels of ecological conservation: the basic security pattern, the buffer security pattern and the optimal security pattern. Based on the constraint of the ecological security pattern, the preservation area of prime farmland was added to an urban expansion suitability pattern as an additional constraint to simulate scenarios of urban expansion. The results indicate that the basic security pattern covers an area of 374.23 km 2 , accounting for 19.27% of the total area of Changchun City. This pattern is considered as the ecological baseline that maintains the basic ecological functions, and it is the area where ecological land cannot be occupied for construction purposes. Furthermore, co-constrained by the preservation area of prime farmland, the ecological conservation area, the ecological restriction area and the suitable development area are 190.34 km 2 , 384.75 km 2 and 152.83 km 2 , respectively, accounting for 9.80%, 19.80% and 7.87% of the total area. It can be concluded that the suitable expansion area for the city is relatively limited when the conservation of farmland and regional ecological environment is considered. Therefore, positive actions such as industrial structure transformation and land use efficiency improvements should be perceived as a preferable pathway for urban development to balance economic growth, and regional ecological and food security.
机译：中国的快速城市化增加了城市对土地资源的需求，并引发了一系列环境问题。在城市扩张压力下的生态安全已成为说明区域环境状况并为城市发展提供信息的典型指标。长春市是东北地区重要的农业生产区和核心经济发展区之一，现在面临着经济增长，生境保护和粮食安全之间的严重矛盾。因此，为了寻求一种优化区域生态安全模式和土地利用结构的方法，本研究建立了一个综合的生态安全模式，其中考虑了区域生态过程，包括水调节，水土保持，物种保护和娱乐。根据生态保护水平的不同，确定了三种生态安全模式：基本安全模式，缓冲安全模式和最优安全模式。基于生态安全模式的约束，将主要农田的保护区添加到城市扩展适宜性模式中，作为模拟城市扩展场景的附加约束。结果表明，基本安全格局覆盖面积为374.23 km 2，占长春市总面积的19.27％。这种格局被认为是维持基本生态功能的生态基线，也是不能以建设为目的占用生态土地的地区。此外，受主要农田保护区的约束，生态保护区，生态限制区和适宜的开发区分别为190.34 km 2，384.75 km 2和152.83 km 2，分别占9.80％，19.80％和9.80％。总面积的7.87％。可以得出结论，考虑到耕地保护和区域生态环境，适合城市扩展的区域相对有限。因此，应将诸如产业结构转型和土地使用效率改善之类的积极行动视为城市发展平衡经济增长以及区域生态和粮食安全的较可取的途径。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号