九寨沟保护区植被景观变化与生境破碎化研究  

Vegetation Landscape Change Pattern and Habitats Fragmentation in Jiuzhaigou Nature Reserve

作　　者：郝云庆[1,2] 江洪[1,3] 王金锡[2] 金静[1] 马元丹[1] 

机构地区：[1]南京大学国际地球系统科学研究所,江苏南京210093 [2]四川省林业科学研究院,四川成都610081 [3]浙江林学院国际生态研究中心,浙江杭州311300

出　　处：《地理科学》2009年第6期886-892,共7页Scientia Geographica Sinica

基　　金："十一五"国家科技支撑计划重大项目:生态脆弱区世界自然遗产地生态保育技术开发(2006BAC01A15);四川省发改委"九寨沟-黄龙核心区森林生态水文生态效益监测技术与评价的研究"资助

摘　　要：根据1974、1994和2002年三个时段卫星影像，将土地覆盖类型划分为针叶林、针阔叶混交林、落叶阔叶林、灌丛、草地、裸地和水体7个类型。研究发现，九寨沟森林面积、特别是针叶林面积减少，各景观类型破碎化程度也在增大。与1974～1994年间森林丧失平均速率相比，1994～2002年间森林丧失速率明显放缓。第二期灌丛面积平均增长速率是第一期的3．5倍。随着生境破碎化的加剧，许多珍稀保护生物的前景变得难以预测，应以审慎的态度来对待所谓的“生态旅游”。The protection effect of Jiuzhaigou Nature Reserve has received considerable attention, especially in view of its stimulating tourism after the 1990s. Remote sensing data from 1974, 1994 and 2002 were chosen for the analysis of this reserve, and landcover was divided into 7 types, i.e. Conifer Forest （CF） , Conifer and Broadleaf Mixed Forest （ CBM ）, Deciduous Broadleaf （ DB ）, Shrubland （ SL ）, Meadow （ MD ）, Barel＇and （BL） and Water Area （WA）. We find that the quality and quantity of the forest in Jiuzhaigou Nature Reserve continues to decline, owing to the conifer area and whole forest area constantly shrinking, as well as the land- scape fragmentation increasing. The rate of loss of forest in the second period （1994 -2002） had showed down much than that in the first period （ 1974 - 1994） , due to nature protection. Shrubland area continued to increase throughout the two periods, with an increased speed in the second period which was about 3.5 times that in the first period. Along with habitat loss and fragmentation, the future of endangered creatures is uncertain. We suggest that people should consider the influence of the so called ＇ ecotourism＇ by cautious insight.

关 键 词：九寨沟自然保护区 植被 生境破碎化 生物保护 

分 类 号：S718.5[农业科学—林学]