摘要
本文以重庆主城区为研究对象,借助景观生态学理论,利用1986、1995、2000和2006年重庆主城区遥感影像数据及相关辅助数据,运用人机交互目视解译方法以及地理信息系统的空间分析和数理统计功能,建立重庆主城区森林景观数据库,对主城区森林景观格局的景观时空演变及地理空间分异特征与规律进行定量化分析。经分析得出:1)研究区森林景观变化:在研究时段的20年间,研究区森林景观面积1986—2000年逐年递减,2000—2006年有所增加;森林景观破碎度总体上呈降低趋势,局部地区受人类活动影响破碎化加剧;斑块边界褶皱化程度加剧,斑块形状趋向复杂化;2)研究区斑块动态变化:1986—1995年,森林斑块等级变化不明显,处于相对稳定状态;1995—2000年,小斑块变大的趋势明显;2000—2006年,斑块各个等级间变化最为剧烈,数量和面积上均相对较大,人类活动作用明显;3)森林景观空间格局演化主要受地形条件的控制,并随城市化进程受人类活动影响程度不断加深而时刻变化。
The study of the landscape pattern is the important part of landscape ecology. With the support of related ancillary data and the remote sensing image in 1986,1995,2000 and 2006 of Chongqing city, based on the integrated use of RS and GIS technology, combinedwith the principle of landscape ecology, the space evolution of landscape and geo-spatial differentiation characteristics and laws of the four-period data are quantitative analyzed. The results are shown in the following aspects： 1 ） forest landscape change of study area,during the 20 years of study, forest landscape area reduced gradually from 1986 to 2000, and increase from 2000 to 2006; landscape fragmentation showed an reducing trend, some areas were of a high degree of landscape fragmentation bearing more human activities impact;patch edge drape degree was enhanced and patch shape was intended to be more complicated; 2 ） forest patch change of study area： during the year 1986 to 1995, forest patch degree variety was not evidence and in a stable condition, in 1995 to 2000, small patches showed an evident growing trend in general; in 2000 to 2006, the variety of patch degree was the strongest; 3 ） forest landscape pattern evolvement was mainly controlled by topography, and continually changed with urbanization.
出处
《重庆师范大学学报（自然科学版）》
CAS
2010年第3期36-40,F0003,共6页
Journal of Chongqing Normal University:Natural Science
基金
重庆市自然科学基金(No.KT080818)
重庆师范大学科研基金项目(No.08XLz12)
关键词
森林景观斑块
时空特征
遥感影像
重庆市主城区
forest landscape patch
temporal and spatial features
remote sensing image
Chongqing city
