基于GIS的区域生态连接度评价方法及应用

被引:16
作者
张利
陈亚恒
门明新
许皞
机构
[1] 河北农业大学国土资源学院
关键词
土地利用; 地理信息系统; 生态; 连接度; 影响评价; 曹妃甸新区;
D O I
暂无
中图分类号
F301.2 [土地管理、规划及利用];
学科分类号
083306 ; 0903 ;
摘要
快速城市化过程使区域生态用地日益破碎,导致生物多样性不断降低,威胁土地生态安全。对快速城市化地区土地利用及规划进行生态连接度评价,并为土地管理提供决策支持,成为保障区域土地生态安全的必然选择。该文利用第二次全国土地调查数据及土地利用总体规划数据,在生态功能区识别的基础上,采用生态连接度指数对曹妃甸新区土地利用现状和规划情景进行生态连接度评价,评价土地利用对区域土地生态功能联系的影响并提出改善建议。结果表明:曹妃甸新区中等以上生态连接区域仅占曹妃甸新区的56.45%,且呈明显破碎化和孤岛化分布;在7 714.71 hm2规划新增城市用地中有2 027.25 hm2对区域生态连接度影响显著,这些区域应进行生态功能保护和提升。加强对区域重要生态用地的保护、利用现存生态资源对景观进行生态重建、强化建成区内部绿地网络建设是提高曹妃甸新区生态连接度水平的有效途径。研究成果对区域生态保护和建设工作具有重要参考价值。
引用
收藏
页码:218 / 226
页数:9
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