黄土丘陵沟壑区城市森林生态网络体系建设 ——以延安市为例

以延安市为例对黄土丘陵沟壑区城市森林生态体系建设进行了分析,提出从处于不同空间格局的市区中心、城郊结合部、郊区农村的社会功能、人为活动影响、生态条件等方面的差异出发,城市森林建设从市区中心到郊区应建立3个绿化生态圈,第一圈是城市防污调气美化生态圈,第二圈是近郊美化、防护、农林果生产带生态圈,第三圈是远郊水源涵养、水土保持、风沙防护、林果生产林生态圈。

Construction of City Forest at Loess Hilly-gully Region--A Land Evaluation Case Study of Yan'an City

The construction development of city forest on loess plateau hilly and gully area at Yan''an city was analyzed. Three forestation ecological circles should be established from urban center to suburb based on the different of social function, artificial activity influence, ecosystem term etc. among city center, suburb and village. The first one is anti-fouling, turning air and city beautified ecological circle. The second one is suburb beautified, protection and agricultural fruit production circle. The third one is the self-control suburb of source of water, water and soil conservation and the protection of dust storm, forest fruit production forest ecological circle.