[Objectives]The paper was to explore the spatio-temporal evolution of habitat quality in inland ecosystem.[Methods]Using landscape pattern analysis and InVEST habitat quality model,the land use change,landscape patter...[Objectives]The paper was to explore the spatio-temporal evolution of habitat quality in inland ecosystem.[Methods]Using landscape pattern analysis and InVEST habitat quality model,the land use change,landscape pattern and habitat quality change in Yunnan Province from 1980 to 2020 were studied.[Results]The land use change in Yunnan Province was relatively stable,and the forest land area accounted for 57.2%of the total area.The landscape fragmentation index caused by artificial surface encroachment on ecological land was increased by 6.33%,and the landscape heterogeneity was enhanced to varying degrees.The mean patch area was decreased by 5.83%,the number of patches was increased by 6.29%,and the degree of fragmentation was deepened.The habitat quality in Yunnan Province showed a"high-low-high"distribution from northwest to southeast,and the overall habitat quality was above the average.It is necessary to formulate optimization strategies to improve the regional ecological environment and realize the ecological system protection and rational land use in Yunnan Province.[Conclusions]The results will provide a scientific reference for regional ecological protection construction and land use planning in Yunnan Province.展开更多
商业模式创新是企业战略与创新管理领域近十几年新出现的研究热点。运用作者共被引分析方法,对Web of Science数据库中1990—2013年间商业模式创新的相关文献进行定量分析。研究发现,国外商业模式创新研究可分为战略视角、组织视角和外...商业模式创新是企业战略与创新管理领域近十几年新出现的研究热点。运用作者共被引分析方法,对Web of Science数据库中1990—2013年间商业模式创新的相关文献进行定量分析。研究发现,国外商业模式创新研究可分为战略视角、组织视角和外部视角三个学术群。战略视角从差异化战略、价值创造和竞争优势等方面研究商业模式创新,组织视角则从企业具体层面研究其创新,外部视角主要从企业社会责任这一外部层面研究,三者在学术贡献率、代表人物、研究地位以及主要观点上存在显著差异。展开更多
基金Yunnan Historical Data Entry of the Ninth National Forest Resources Inventory(80026091607).
文摘[Objectives]The paper was to explore the spatio-temporal evolution of habitat quality in inland ecosystem.[Methods]Using landscape pattern analysis and InVEST habitat quality model,the land use change,landscape pattern and habitat quality change in Yunnan Province from 1980 to 2020 were studied.[Results]The land use change in Yunnan Province was relatively stable,and the forest land area accounted for 57.2%of the total area.The landscape fragmentation index caused by artificial surface encroachment on ecological land was increased by 6.33%,and the landscape heterogeneity was enhanced to varying degrees.The mean patch area was decreased by 5.83%,the number of patches was increased by 6.29%,and the degree of fragmentation was deepened.The habitat quality in Yunnan Province showed a"high-low-high"distribution from northwest to southeast,and the overall habitat quality was above the average.It is necessary to formulate optimization strategies to improve the regional ecological environment and realize the ecological system protection and rational land use in Yunnan Province.[Conclusions]The results will provide a scientific reference for regional ecological protection construction and land use planning in Yunnan Province.
文摘商业模式创新是企业战略与创新管理领域近十几年新出现的研究热点。运用作者共被引分析方法,对Web of Science数据库中1990—2013年间商业模式创新的相关文献进行定量分析。研究发现,国外商业模式创新研究可分为战略视角、组织视角和外部视角三个学术群。战略视角从差异化战略、价值创造和竞争优势等方面研究商业模式创新,组织视角则从企业具体层面研究其创新,外部视角主要从企业社会责任这一外部层面研究,三者在学术贡献率、代表人物、研究地位以及主要观点上存在显著差异。
