Assessment of landscape ecology of agricultural protection forest system at Beizang Town, Daxing County, Beijing  

京郊农田防护林景观生态评价——以北京大兴县北藏乡为例(英文)

作　　者：李春平[1] 关文彬[1] 范秀珍 赵廷宁[1] 陈建刚[1] 孙保平[1] 

机构地区：[1]北京林业大学水土保持部级重点实验室

出　　处：《Journal of Forestry Research》2003年第2期135-140,共6页林业研究（英文版）

基　　金：This research was funded by a sub-program of the Ninth Five Years of China: "Study and demonstration of combating technique of sandy disasters in sub-humid-semi-dry zone; Yongding River Sandlot"(96-017-01-01).

摘　　要：Based on theories of protective forests and landscape ecology, the reasonableness of structures and patterns of shelterbelt system at Beizang Town, Daxing County, Beijing were analyzed and assessed from the two scales of forest belts and networks, by integrating uses of field investigation, GIS and RS techniques. Results showed that the existent main belt (3-12 m in width) was too narrow, while the assistant belt (3-27.1 m in width) was too wide; the species composition of the existent shelterbelts was single, and the structures and patterns of the shelterbelt system were unreasonable. It is suggested that the structure of the main and the assistant belts should be changed, such as increasing the width of main belts, decreasing the width of assistant belt, and planting more mixed species, and the pattern with arbores in the middle and shrubs in the sides of belts could be taken into account. For the landscape structure of forest network after regenerating or reconstruction, the grid number of closed network should be 13 per km2 and the minimum number of belts should be 34 per km2. This study also testified that integrating GIS and remote technique with landscape ecology could provide an effective method for reasonable reconstruction of the structures and patterns of shelterbelts system.以北京市大兴县北藏乡为例,根据防护林学和景观生态学的原理,结合野外调查与地理信息系统Citystar和遥感等技术,从林带和林网两个尺度对防护林体系的布局和结构的合理性进行分析和评价。结果表明:该乡主林带过窄,宽度是3-12m;副林带过宽,宽度是3-27.1m,树种较单一;整个景观布局不够合理。建议更新时应考虑多种适宜树种混交, 加宽主林带,适当减少副林带的宽度,应采用中间乔木两侧配用灌木的混交方式。建议更新或改造后的林网景观结构应为:闭合网格数应达到13个/km2,最少林带条数应达到34条/km2。实践证实,利用景观生态学原理,结合GIS和遥感技术为进行农田防护林网景观结构的改造提供了有效的方法。表6参14。

关 键 词：BEIJING SHELTERBELTS Shelterbelt structure Ecology landscape ASSESSMENT 

分 类 号：S718[农业科学—林学]