Evaluation of land ecological conservation red line in Guangdong Province based on ecological security pattern
In order to scientifically evaluate the spatial and ecological protection effects of the delineation range of the land ecological conservation red line in Guangdong Province,and further build the ecological security barrier in Southern Guangdong Province,ecological security pattern construction and landscape pattern analysis methods were adopted based on the three major connotations of the ecological conservation red line natural ecosystem service function guarantee,human settlement environment security guarantee and biodiversity protection and maintenance.Firstly,based on the evaluation methods such as the importance of ecosystem service functions and ecological sensitivity,the ecological conservation importance evaluation system was constructed to identify ecological sources and evaluate the spatial effects of the land ecological conservation red line.Secondly,the minimum cumulative resistance model and circuit theory were used to extract the ecological corridor,and the red line connectivity and ecological protection effect of the land ecological conservation red line were evaluated.Finally,based on the landscape pattern analysis method,the fragmentation degree and connectivity degree of urban land ecological conservation red line were compared from the perspective of spatial structure integrity.The results showed that:1)From the perspective of the importance of ecological protection,the scale of the land ecological conservation red line in Guangdong Province was reasonable,and basically realized that the red line protection should be fully drawn and fully guaranteed,which ensured the safety of the ecological system and human settlements in the province in a more comprehensive way;2)From the perspective of spatial distribution pattern,the spatial distribution of land ecological conservation red line and ecological source area is in good consistency,and important ecological source areas have been included in the scope of land ecological conservation red line,but the connectivity of ecological conservation red line is insufficient;3)From the perspective of spatial structure integrity,the fragmentation degree of land ecological conservation red line patches in some regions is higher,and the landscape connectivity of urban ecological protection red line in northern Guangdong is better than that in the Pearl River Delta region.
Land ecological conservation red lineecological security patternecological sourceecological corridorGuangdong Province
NETL
NSTL
万方数据
