长江流域资源与环境 >> 2013, Vol. 22 >> Issue (08): 1043-.

• 自然资源 • 上一篇    下一篇

四川省甘孜州松茸栖息地动态变化研究

王 莉| 彭培好 , 刘贤安| 石转弟   

  1. (1.成都理工大学地球科学学院|四川 成都 610059; 2.成都理工大学生态资源与景观研究所|四川 成都 610059)
  • 出版日期:2013-08-20

DYNAMIC CHANGES OF Tricholoma matsutake HABITAT IN GANZI

WANG Li1,2, PENG Peihao2, LIU Xianan1,2, SHI Zhuandi1   

  1. (1.College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China|2.Institute of Ecological Resources and Landscape Architecture,Chengdu University of Technology,Chengdu 610059,China
  • Online:2013-08-20

摘要:

应用3S技术结合野外调查,对甘孜州松茸栖息地10 a间(1994~2004)的动态变化特征进行综合分析。结果表明:(1)根据建群种的生活型可将松茸栖息地划分为3大栖息地类型(12个群系),分别为硬叶常绿阔叶林栖息地、针阔叶混交林栖息地以及针叶林栖息地;(2)松茸栖息地破碎化整体上呈增加趋势,主要表现为最大斑块指数减小,斑块边界总密度、形状指数及多样性指数增大;(3)至2004年松茸栖息地总面积达1 728 96309 hm2,较1994年面积增加4329%;新增川滇高山栎川西云杉混交林和高山松黄背栎混交林两大斑块类型,面积分别为409 95468 hm2和24 61428 hm2;栖息地面积、类型及数量的增加,对破碎化的发展速度起到一定的延缓作用;(4)鳞皮冷杉林、高山松林、川滇高山栎川西云杉混交林以及高山栎鳞皮冷杉混交林为栖息地的优势斑块类型,有必要对其乔木层片与灌木层片中栎类植物的组成比例进行调整,改善栖息地环境质量

Abstract:

Based on the Landsat TM /ETM images and field survey data,the distribution, quality, spatial pattern and dynamic change principle of Tricholoma matsutake habitat in Ganzi region from the year 1994 to 2004 were studied with the aids of 3“S” techniques.This paper intends to provide scientific base for making decision for the protection and restoration of Tricholoma matsutake habitat.The results were as follows.(1)Three types of Tricholoma matsutake habitats were divided by means of the lifetype of community constructing species,sclerophyllous evergreen broadleaved forest,needlebroad leaved mixed forest and coniferous forest.(2)Enhancement of human disturbance activity leaded to the habitat landscape fragmentation and the ecotone area had an increasing tendency from the year 1994 to 2004,mainly including the increase of the total patch Edge Density,Landscape Shape Index,Interspersion Juxtaposition Index,Patch Richness and Shannon′s Diversity Index,and the decline of Largest Patch Index and Contagion Index.(3)Remote Sensing data showed that the forest area,which was closely associated with Tricholoma matsutake habitat,was up to 1 728 96309 hm2 in 2004,increased by 4329% compared with the habitat area in 1994.The habitat area of the Quercus aquifolioides and Picea likiangensis forest and Pinus densata and Quercus pannosa forest newly formed was 409 95468 hm2 and 24 61428 hm2 respectively during past decade years.Increasing in area,types and numbers of the habitat patches leaded to the delaying of the fragmentation process.(4)The Abies squamata forest,Pinus densata forest,Quercus aquifolioides and Picea likiangensis forest and Quercus semecarpifolia and Abies squamata forest were the dominant patch types.To boost the environmental quality of the Tricholoma matsutake habitat,it is necessary to adjust the dense,structure and composition proportion of Abies,Picea,Pinus,and Quercus species in the tree layer of coniferous forest and mixed wood as well as to improve the light conditions under forest to ensure the development of Quercus species

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