干扰对太湖西山风景林景观格局影响的时间轨迹分析  

Time trajectory analysis on effects of disturbances to scenic forest landscape pattern in Taihu Xishan Island

作　　者：王军围[1] 唐晓岚[1] 李明阳[2] 杨玉锋[2] 

机构地区：[1]南京林业大学风景园林学院,江苏南京210037 [2]南京林业大学林学院,江苏南京210037

出　　处：《中南林业科技大学学报》2015年第12期69-75,共7页Journal of Central South University of Forestry & Technology

基　　金：国家自然科学基金"基于3S技术的太湖名胜区中村落景观特色研究"(31270746)

摘　　要：由于各种自然、人为干扰,森林公园风景林存在着快速的空间及结构特征的变化。以太湖西山国家森林公园为研究区域,以免费开放的2001～2010年Landsat时间系列堆栈（LTSS）数据为主要信息源,在监督分类、森林景观格局指数计算基础上,分观光旅游（2001～2004年）、度假旅游（2005～2007年）、综合整治（2008～2010年）3个时段,对研究区域2001～2010年的风景林景观格局变化及其驱动因素进行了时间轨迹分析。研究表明：（1）2001～2010年,研究区域的森林干扰经历了小幅上升、上下剧烈变动、缓慢下降3种不同的变化趋势;（2）2001～2010年,研究区域风景林平均斑块大小和面积加权形状指数经历了较大幅度下降、上下剧烈变化、缓慢上升3种不同的变化趋势,斑块数量则呈现较大幅度上升、先下降后上升的剧烈变化、缓慢上升3种变化趋势;（3）2001～2010年,森林干扰变化剧烈的地段位于海拔较低、坡度较为平缓、受人类旅游活动影响剧烈的西山岛东部以及南部边缘地带;（4）西山岛森格局指数的时间轨迹变化与森林干扰指数的变化趋势在时空上存在着密切的联系。Due to a variety of natural and anthropogenic disturbances, there are rapid spatial and structural changes for scenic forests in forest parks. Taihu Xishan National Forest Park was chosen as the study area, and the free and open accessed Landsat time series stacks （LTSS） data during 2001 to 2010 were collected as the main information sources to do supervised classification and calculation of forest landscape pattern indices, followed by time trajectory analysis of forest landscape change and driving factors with three periods of touting period （2001-2004）, vacation period （2005-2007） and comprehensive renovation （2008~2010）. The study results show that （1） during 2001 to 2010, forest disturbances in study area experienced three kinds of different trends such as a slight increase, dramatic changes of up and down, slow decline; （2） during 2001 to 2010, average scenic forest patch size and area weighted shape indexes in study experienced trends of a more significant decline, dramatic changes of up and down, slowly rising, while the number of patches showed trends of big increase, dramatic decline followed by rising, slow rise; （3） during 2001 to 2010, hot spots of dramatic changes of disturbances were located in the eastern part and southern fringes of the island with a lower elevation, gentle slope, subject to intense human impacts of tourism activities; （4） time trends of forest landscape pattern indexes were closely linked with changing trends of forest disturbances both in time and space,

关 键 词：森林景观格局 自然和人为干扰 时间轨迹分析 江苏省太湖西山岛 

分 类 号：S727.5[农业科学—林木遗传育种]