Spatial-temporal Evolution and Driving Factors of Forest Vegetation in the Three Parallel Rivers Region
Studying the spatial-temporal evolution and driving factors of forest vegetation in the three parallel rivers region can provide data support for building the ecological safety barrier and promoting the social and economic development in Southwest China.The spatial-temporal evolution pattern of forest vegetation in the three parallel rivers region was explored by geospatial analysis,and the evaluation index system was constructed from the two dimensions of'natural-social economy'.And 14 specific evaluation indexes(elevation,slope and annual precipitation,etc.)were selected to measure the driving force of the area change of each vegetation type in the study area.The results were as follows,1)there were three types of forest vegetation in the study area:evergreen broad-leaved forest,deciduous broad-leaved forest and evergreen needle-leaved forest,among which evergreen needle-leaved forest accounted for more than 84%of the forest vegetation.2)There were three change track of stablility,mutation and fluctuation,among which the sta-blility type accounted for 80.35%of the changing area.The spatial distribution of"cold-hot spots"in evergreen broad-leaved forest and deciduous broad-leaved forest was similar,and the"cold-hot spots"in evergreen needle-leaved forest showed a trend of cold spots surrounding hot spots.3)The factor detection showed that the influence of each factor on evergreen broad-leaved forest was greater than others,and the explanation strength for evergreen needle-leaved forest was small.The spatial distribution of forest vegetation in the three parallel rivers region has obvious spatial heterogeneity,and the interaction effect of elevation and other factors on forest veg-etation in the study area is significantly stronger than that of single factor detection.
Forestgeodetectorsspatial-temporal evolutiondriving forcethree parallel rivers region
国家科技期刊平台
NSTL
万方数据
