Analysis of Spatiotemporal Changes in Forest Landscape Pattern in Bijie
Mastering the spatiotemporal changes in forest landscape patterns is of great significance for the planning of mountains,rivers,forests,fields,lakes,grasslands,and sands,which are mainly dominated by forests.Based on remote sensing images interpretation,we obtain four periods of forest landscape data in Bijie,Guizhou province from 1990 to 2020,and analyze the characteristics and laws of forest landscape pattern evolution in the study area.The results indicated that:In the past 30 years,the forest landscape area and pattern in Bijie had undergone significant changes.The forest landscape was greatly influenced by human activities and policies,and the overall forest landscape area showed a decreasing trend,but the quality of the forest landscape continued to increase.From the perspective of secondary land types of forest land,the proportion of shrub forest land in Bijie was the largest,and the overall trend was decreasing.There as an overall increase in the area of forest land,sparse forest land,and other forest land,with forest land mainly turning into farmland and grassland.The degree of fragmentation of the Bijie forest landscape has slightly increased,and the heterogeneity of the landscape had gradually increased.Different landscape patches tended to disperse in space,reflecting that the Bijie forest had been severely disturbed by human activities in the past 30 years.
NETL
NSTL
万方数据
