九寨沟保护区植被景观变化与生境破碎化研究

被引:10
作者
郝云庆 [1 ,2 ]
江洪 [1 ,3 ]
王金锡 [2 ]
金静 [1 ]
马元丹 [1 ]
机构
[1] 南京大学国际地球系统科学研究所
[2] 四川省林业科学研究院
[3] 不详
关键词
九寨沟自然保护区; 植被; 生境破碎化; 生物保护;
D O I
10.13249/j.cnki.sgs.2009.06.017
中图分类号
S718.5 [森林生态学];
学科分类号
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19741994年间森林丧失平均速率相比,19942002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"。
引用
收藏
页码:886 / 892
页数:7
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