游动分割窗技术在景观界面影响域判定中的应用——以牛枝子-黑沙蒿群落界面为例  

Application of moving split-window technique in quantitative methodologies for edge influence of landscape boundary:a case study of Lespedeza potaninii-Artemisia ordosica community

作　　者：时项锋[1] 许冬梅[1] 邱开阳[1] 谢应忠[1] 

机构地区：[1]宁夏大学草业科学研究所,宁夏银川750021

出　　处：《草业科学》2010年第4期30-33,共4页Pratacultural Science

基　　金：国家自然基金项目资助(30860200)

摘　　要：采用样带法，以毛鸟素沙地南缘牛枝子Lespedeza potaninii一黑沙蒿Artemisia ordosica群落界面为研究对象。以样带上样地间的平方欧氏距离系数为指标，采用游动分割窗技术判定了牛枝子-黑沙蒿群落界面的位置和宽度。结果表明：当分割窗体大小在4个和6个样地单位时，曲线波动大，干扰了界面的判定。而最小窗体大小为8个时，能很好地进行界面的判定。样带A和样带B在样地20~25都出现了波峰。游动分割窗技术是景观界面影响域判定和群落划分的有效方法，并在小尺度研究中能够较好地解释群落水平界面的边界和宽度。Two transects were set up to study the Lespedeza potaninii-Artemisia ordosica community boundary in south edge of Maowusu Desert. The squared Euclidean distance coefficients of sampling plots along ecotone transect were applied in the moving split-window technique for edge influence of landscape boundary position and width in the area across the community. The result showed that while the split form was in size of 4 and 6 units of plots, the curves dramatically varied and the identification of landscape boundary was interfered. While the minimum size of split-window was 8 plots the landscape boundary could be properly identified. The emerging peaks appeared between plot 20 and plot 25 in Transect A and B. Therefore, moving split-window technique was an effective method for edge influence of landscape boundary and community classification and it was a satisfactory method to show the peaks and widths of communities in small scale.

关 键 词：群落 景观界面 游动分割窗技术 

分 类 号：Q948[生物学—植物学]