西藏林芝地区景观动态研究  

Study on Landscape Dynamics of the Linzhi Prefecture in Tibet

作　　者：徐济德[1] 郎奎建[1] 

机构地区：[1]东北林业大学

出　　处：《林业资源管理》2004年第6期52-57,共6页Forest Resources Management

摘　　要：在ARC/INFO支持下,运用景观指数方法,对西藏林芝地区2个时段的景观格局作了系统的分析。研究表明,该地区在1991至2000年10年间,在以火干扰和人类活动干预为主要驱动力的作用下,景观格局发展趋势是:受人为干扰逐步加强;景观基质即林地面积减少;多样性指数和均匀性指数呈上升趋势;斑块总数在增加。同时,运用马尔柯夫矩阵对未来土地利用的景观格局进行了预测:林地和水域面积逐年减少。Systematical analyses were carried out on landscape patterns of two different periods of the Linzhi Prefecture in Tibet by using ARC/INFO software and the landscape index method.It is shown through the studies that under the common action of fire disturbances and intervenes from human activities as the main drive forces, development trends of landscape patterns of the Linzhi Prefecture are as follows: disturbances by human activities become increasingly stronger,while landscape matrix, namely the forestland area, decreases, The diversity indexes and the well-distribution indexes show a trend of increasing.The total number of the patches increases, At the same time, landscape patterns of the land utilization in the future are predicted by using the Markov matrix.Areas of the forest land and waters would decrease gradually.

关 键 词：西藏林芝 斑块 景观动态 马尔柯夫矩阵 

分 类 号：TP39[自动化与计算机技术—计算机应用技术] X321[自动化与计算机技术—计算机科学与技术]