银川市湖泊湿地景观空间格局动态演化分析  

Analysis on the Dynamic Evolution of Spatial Pattern of the Lake Wetland Landscapes in Yinchuan City

作　　者：渠晓毅[1] 刘小鹏[1] 邵宁平[1] 

机构地区：[1]宁夏大学资源环境学院,宁夏银川750021

出　　处：《干旱区研究》2009年第3期333-339,共7页Arid Zone Research

基　　金：国家社会科学基金项目(04CJY005);宁夏高等学校科学研究项目

摘　　要：区域生态安全是可持续发展的基础,湖泊湿地对于区域生态安全的维护具有至关重要的意义。应用3S技术以及景观空间格局指数方法,对银川市湖泊湿地进行了动态演化研究。分析得出:①近20年来,银川市湖泊湿地景观斑块总面积A总、平均面积A-、斑块最大面积Am ax等特征呈逐年减小的趋势;②银川市湖泊湿地景观内部结构中,虽然部分指标特征有所改善,但整体仍呈脆弱化、不稳定化的变化趋势,如2004年MSI,FD,FS等指数特征虽都明显好于1997年,但是与1987年状态相比仍有差距;③银川市湖泊湿地景观动态演化的驱动力因子有气候和水文的自然因子以及人口增长、农业开发活动和政策调整等人为因子,其中人为因子为主要的驱动力因子。根据结论进一步提出对策及建议,以期为银川市生态建设和生态安全维护提供参考。Regional ecological security is the foundation for sustainable development, and the lake wetlands are of vital importance for maintaining regional ecological security. In this paper, the dynamic evolution of the lake wet- lands in Yinchuan is analyzed using landscape pattern index based on 3S technology. The results are as follows： （1） The characteristic values, such as the total, average and maximum areas of the lake wetland landscapes in Yinchuan, are in a gradual reduction trend since recent 20 years; （2） The internal hierarchical structure of the lake wetlands in Yinchuan is improved in some aspects, but the overall hierarchical structure is still fragile and un- stable, for example, some characteristic indexes, such as the , FD and FS, were obviously better in 2004 than that in 1997, but there were still some gaps compared with that in 1987; （3） The driving forces resulting in the dynamic evolution of the lake wetland landscapes in Yinchuan include both the natural and artificial factors, such as the climate change, hydrological process, population growth, agricultural development activities and policy change, in which the artificial factors are dominant. According to the conclusions, some measures and suggestions are put forward, which can be referred in the ecological construction and the maintenance of ecological security in Yinchuan.

关 键 词：湖泊湿地 景观空间格局 演化 3S技术 驱动力 银川 

分 类 号：Q149[生物学—生态学]