摘要
利用植被图 ,在 GIS软件 ARC/INFO支持下对车八岭国家级自然保护区森林景观要素的斑块特征进行了研究。结果表明 :5种森林类型斑块中 ,马尾松林斑块所占面积最大 ,中亚热带山地常绿阔叶林斑块平均面积最大 ,中亚热带丘陵低山常绿阔叶林斑块总周长和平均斑块周长最大 ;景观破碎化的形成存在 2种机制 ,即人为破坏后相互切割造成和地形造成 ;斑块的形状指数表明受干扰较少的、面积较大的斑块不规则程度较高 ,森林斑块间分形维数不存在显著差异 ,具有一致的分形维数 1.
The patch properties of forest landscape of National Chebaling Nature Reserve are analyzed based on GIS by utilizing vegetation map.Among five types,the area of the Pinus massoniana stand type,the mean patch area of the mid subtropical mountain evergreen broadleaf forest type,the total perimeter,the mean perimeter of the mid subtropical hill and low mountain evergreen broadleaf forest is the biggest respectively.There are two types of the mechanism of landscape fragmentation.The mid subtropical mountain evergreen broadleaf forest type is fragmented by topography.The others are fragmented by human disturbance.The shape of the patch,mildly disturbed and bigger area,is more irregular.There is no difference of fractal dimension between patch types and the fractal dimension is 1.382.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2003年第4期135-138,共4页
Journal of Northwest A&F University(Natural Science Edition)
基金
广东省自然科学基金项目 ( 0 10 2 86
E0 2 0 0 6)
