摘要
以长丰县森林资源二类调查为本底数据,在GIS软件支持下,选取斑块分维数、斑块形状指数、景观破碎度、景观多样性指数,对该县2003和2006年林地与树种组景观结构特征进行分析。结果表明,林地类型由4种增加到5种,乔木纯林地为优势林地类型;林地斑块形状比较规整。乔木混交林地形状指数最大,斑块周长也最为复杂。现有10个树种组,优势树种组为杨类,期间杨类斑块数增加1967个,树种结构单一;树种组斑块分维数值变化不大,斑块形状比较规整;树种组斑块周长较复杂;杨类斑块密度变大,破碎度上升,经果林斑块密度变小,破碎度下降。
Based on forest resource inventory data of Changfeng county from 2003 to 2006,the characteristics of forestland and tree species landscape structure were analyzed using the following indices：patch dimension,patch shape index,patch density and landscape diversity,through GIS（geographic information systems） technology.The results showed that the types of foresland increase from 4 to 5,and the arboreal pure forest land is in the dominant position among the forestlands;the forest land patch shape is in regularity.The mean patch shape index of arboreal mixed forest land is the biggest,and its mean patch circumference is also most complex.There are 10 tree species groups,in which,poplar landscape is the dominant one.During this period,poplar landscape increase by 1967 patches.The construction of tree species is unitary;the mean patch dimensions of tree species have change little and the patch shape is more regulation;the mean patch circumference of tree species is more complex;the patch proportion of poplar landscape and patch density increase,but the correspondent change trends economic fruit forest is actually opposite.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2010年第2期296-300,共5页
Journal of Anhui Agricultural University
基金
合肥市科委项目(合科[2006]27)资助
关键词
森林资源二类调查数据
林地
树种
景观
长丰县
forest resource inventory data
forestland
tree species
landscape
Changfeng county
