甘家湖自然保护区梭梭林退化研究

Haloxylon Forest Degradation of Natural Reserves Ganjiahu

文章研究区的土地利用类型结构化分为3个一级类型:密林地、灌木林地和宜林荒山荒地。景观形状指数退化区值为5.151,值较大说明形状越不规则,景观多样性指数密林区类型所占比例9.09%,多样性指数(H)为0.09467值较小说明多样性不丰富和程度不复杂。土地利用的优势度值为0.88301景观结构受中等区梭梭林景观类型支配的程度大,各类别面积统计甘家湖梭梭林密林区面积有所减少,应该重视保护和可持续发展。梭梭在干旱区的植被及生态环境中的重要性,目前全球气候变化下引起的植被退化现象目前已成为国际研究的热点问题.尤其是在植物与环境之间的关系上研究最多。本研究通过对甘家湖梭梭的遥感面积变化分析,为进一步了解本地适合梭梭生长的环境因子及梭梭退化提供科学的理论基础。

In this paper, the type of land use area is divided into three level types ： forests, the shrub land, land and barren hills and wasteland. Degradation of the landscape shape index shows a large area 5. the more irregu- lar shape, the type of landscape diversity index is not rich in jungle areas and extent of non - complex, the propor- tion of 9.09 %, the diversity index （H） is 0. 09467. Large value of 0. 883011 dominance in three types of land use structure with the large extent of land use, the type area of statistics Ganjiahu Haloxylon forest area has decreased, the growth should pay attention to the conservation and sustainable develooment.