摘要
以2010年森林资源二类调查数据为信息源,对望云山森林公园森林景观稳定性进行评价。基于面积信息守恒评价法、景观指数粒度效应和移动窗口法确定了分析的适宜粒度为60 m,移动窗口半径为300 m。基于主成分分析法筛选出分离度(DIVISION)、香农多样性指数(SHDI)、平均分维数(PARA_MN)、聚合度指数(AI)、景观形状指数(LSI)、斑块密度(PD)6个指标,通过2个主成分方差贡献率和各景观指数的得分系数确定其权重分别为0.292 3、0.196 9、0.146、0.141 7、0.132 1、0.090 9。采用克里金插值和自然间断点分级法将公园景观稳定性分为4级,其中稳定区面积所占比例为47.95%,不稳定区占52.05%,表明望云山森林公园整体景观稳定性较差,森林景观有待加强保护。
The landscape stability of Wangyun Mountain Forest Park was evaluated based on the data of forest resource inventory and planning in 2010. The evaluation method of area information conservation,the grain effect of landscape indexes and the moving window method determined that the appropriate granularity was 60 meters and the optimal quadrat scale was 300 meters. This paper screened out DIVISION,SHDI,PARA _ MN,AI,LSI and PD indicators and calculated the weights of the six indexes were0. 2923,0. 1969,0. 146,0. 1417,0. 1321 and 0. 0909 respectively by using the principal component analysis. The landscape stability was divided into four levels by Kriging interpolation and natural discontinuous point classification,the stable region and the unstable region accounting for 47. 95% and 52. 05%respectively,which indicated that the poor landscape stability of Wangyun Mountain Forest Park should be protected.
作者
钟海智
ZHONG Haizhi(Guangdong Forestry Survey and Planning Institute, Guangzhou 510520, China)
出处
《林业调查规划》
2018年第3期40-46,共7页
Forest Inventory and Planning
关键词
森林景观
粒度效应
景观稳定性
主成分分析法
面积信息守恒评价法
望云山森林公园
forest landscape
grain size effect
landscape stability
principal component analysis
evaluation method of area information conservation
Wangyun Mountain Forest Park
