摘要
采用分形理论方法计算出了贵州毕节喀斯特区各植被覆盖度的分维值、稳定性指数等,并结合该区的地质地貌特点和不同的坡度级别来分析对应背景条件下植被覆盖度的分布特点,研究结果所表明:(1)自然景观较人为景观中的分维数大,显示了相对较为复杂的镶嵌结构,但同时也显示了较高的稳定性;(2)在喀斯特地区人为景观则显得较为复杂,在非喀斯特区,农田覆盖植被景观镶嵌结构较复杂;(3)从喀斯特、半喀斯特到非喀斯特,自然景观镶嵌结构越来越复杂且越来越不稳定,人为景观在喀斯特地区显得较为复杂;(4)随着坡度的逐渐增大,农田覆盖植被的分维值也越来越大,图斑镶嵌结构越来越复杂。
Using the method of fractal theory, this article studies the vegetation coverage in the karst area, and computes the fractal dimension value and the stable index of various types in the region. The paper also combines the typical characteristics of the karst area and the different slopes to analyze distributed characteristics of vegetation coverage under corresponding background. The findings display （1） the natural landscape＇s fractal dimension number was bigger than the artificial landscape＇s, which demonstrated relatively more complicated mosaic and its relatively high stability;（2）the natural landscape is complex in the non-karst mosaic, but the artificial landscape appears more complex and instable in the karst area; （3） along with gradual slope enlargement, the farmland cover＇s chart spot mosaic is getting more and more complex.
出处
《贵州师范大学学报（自然科学版）》
CAS
2009年第2期34-39,共6页
Journal of Guizhou Normal University：Natural Sciences
基金
国家重大基础研究计划973项目专题[2006CB403200]
贵州省攻关项目[黔科合GY字(2008)3022]
贵州省教育厅基金项目[黔教科(2007022)]
