摘要
以西安市三环以内QuickBird卫星影像为基础,在GIS技术的支持下,通过所选取的景观指数对粒度变化的响应,在确定出研究区的适宜研究粒度为20m的基础上,对西安市的景观格局现状进行研究。结果表明:西安市居住工业用地集中,人工景观聚集,影响自然生态过程;绿地、水体景观破碎化程度高,分布分散;环城路内景观构成不合理,一、二环间各景观类型分布极为不均,二、三环间土地利用经济效益和生态效益有较大的发展空间。建议调整城市的空间布局与结构,从绿地景观的建设和河、湖水网的保护角度来维护景观生态过程与格局的连续性。
With the QuickBird RS images of the Three Circles of Xi＇an City as the basis and under the support of GIS, a 20-m unit was taken as the appropriate grain size based on the sensitivity analysis of different grain size landscape pattern indices, and the present landscape pattern of the city was analyzed. The results indicated that in this city, residential and industrial areas were concentrated and artificial landscapes were congregated, which affected the natural ecological processes. Greenbelts and water bodies were highly fragmented, and distributed separately. The landscape structure within the 1 st circle was unreasonable, different type landscapes between the 1 st and 2nd circles had no uniform distribution, and the potential economic and ecological effects of land use between the 2nd and 3rd circle were quite high. It was suggested that the urban space structure and distribution of Xi＇an City should be adjusted, and the continuity of landscape ecological processes and patterns should be maintained from the aspects of green belt landscape construction and water system protection.
出处
《生态学杂志》
CAS
CSCD
北大核心
2007年第5期706-711,共6页
Chinese Journal of Ecology
基金
国家自然科学基金资助项目(40271052)
关键词
城市景观格局
粒度
GIS
西安市
urban landscape pattern
grain size
GIS
Xi＇an City
