Detecting forest landscape boundary between Mountain Birch and evergreen coniferous forest in the no

• 作 者: CHANG Yu BU Ren-cang Hu Yuan-man XU Chong-gang WANG Qing-li
• 机 构: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Shenyang Branch, C
• 出 处: 环境科学学报(英文版)
• 发表日期: 2003年2期
• 关键词: Changbai Mountain forest landscape boundary PCA & MSWA

Boundaries between different forest types in Changbai Mountain East China are results from complex interactions between forestecosystems, topography, and geomorphology.Detecting and quantifying the transitional zones are highly important since high environmentalheterogeneity and biodiversity are often found within these zones.In this study, we used GIS and multivariate statistics techniques( PCA andMSWA) to analyze data from Landsat TM satellite imageries and quantitatively determined the positions and widths of the landscape boundarybetween mountain birch and evergreen coniferous forests in the north slope of Changbai Mountain.The results showed that the widths of thelandscape boundary ranges from 30-50m while using the MSWA or/and PC method.Such detected widths are consistent with field transect datathat suggests a 50m transitional zone width.The results further suggest that TM data can be used in combination with GIS and statisticaltechniques in determining forest landscape boundaries; MSWA is more reliable than PCA, while PCA can also be used to determine thelandscape boundary when transects are properly located.