Habitat quality plays a crucial role in enhancing the regional ecological environment and safeguarding biodiversity,with topography being a key element influencing the structure and function of ecosystem services.This...Habitat quality plays a crucial role in enhancing the regional ecological environment and safeguarding biodiversity,with topography being a key element influencing the structure and function of ecosystem services.This research aims to assess habitat suitability across various topographic gradients,analyze the spatial heterogeneity of habitat quality between 2000 and 2020,and explore the relationship between influencing factors and habitat quality.InVEST model is used to evaluate the spatial-temporal evolution characteristics of habitat quality in Zhao-tong City,focusing on how topographic gradients impact habitat quality distribution.The study also delves into the factors affecting habitat quality in Zhaotong City,including land use patterns,elevation,slope,average annual temperature and other variables.The results indicate three key aspects of this system.(1)During the study period,the land use types were mainly forest land,farmland and grassland,with construction land experiencing the most significant increase.(2)From 2000 to 2020,the quality areas of high and medium habitats in Zhaotong City de-creased,while the quality areas of medium-high,medium-low and low habitats increased.(3)The study revealed a notable topographic gradient effect on habitat quality,with the primary driver shifting from GDP to land use type and subsequently to average annual precipitation in Zhaotong City.The transfer between different grades of habitat quality mainly presents the characteristics of“descending”transfer,with medium-low quality habitats typically found on medium-low topographic gradients and medium-high quality habitats on medium-high gradients.Cross-detection results show that land use type exhibited the strongest correlation with other influencing factors.Therefore,this study can provide a scientific basis for policy makers to protect biodiversity,enhance ecosystem services and promote regional economic development.展开更多
The“toilet improvement”initiative has been actively responded to and implemented across China to improve the local sanitation environment and service quality since 2015..This paper takes Yunnan Province as an exampl...The“toilet improvement”initiative has been actively responded to and implemented across China to improve the local sanitation environment and service quality since 2015..This paper takes Yunnan Province as an example to evaluate the impact of this measure on the competitiveness of ecotourism in rural traditional villages.The ArcGIS tool was used to compare and screen the geographic environmental characteristics of six batches of 778 villages in Yunnan Province that were evaluated as national-level traditional villages in the early stage,and 37 villages with the same elevation changes and slope were selected for a comparative analysis,to reduce the impact of differences in three-dimensional topography and geomorphology.Combined with the TOPSIS comprehensive evaluation method and OLS econometric regression model,this study examined the ecotourism competitiveness of the 37 selected traditional villages and the impact of the toilet improvement initiative on their competitiveness.The results show that the ecotourism competitiveness of traditional villages in Yunnan Province is generally low,and there are obvious hierarchical characteristics.The road choice,regional distribution quantity,distance and service accessibility of public toilet construction have a significant influence on the overall ecotourism competitiveness of the villages in Yunnan Province.Therefore,three suggestions are put forward:strengthen the ecotourism construction of traditional villages in Yunnan Province as a whole and in each local area,pay attention to and strengthen the quantity and quality of construction of the public toilets relevant to ecotourism in traditional villages,and pay attention to the accessibility and service scope of the public toilets in the construction process.展开更多
Advancements in the vehicular network technology enable real-time interconnection,data sharing,and intelligent cooperative driving among vehicles.However,malicious vehicles providing illegal and incorrect information ...Advancements in the vehicular network technology enable real-time interconnection,data sharing,and intelligent cooperative driving among vehicles.However,malicious vehicles providing illegal and incorrect information can compromise the interests of vehicle users.Trust mechanisms serve as an effective solution to this issue.In recent years,many researchers have incorporated blockchain technology to manage and incentivize vehicle nodes,incurring significant overhead and storage requirements due to the frequent ingress and egress of vehicles within the area.In this paper,we propose a distributed vehicular network scheme based on trust scores.Specifically,the designed architecture partitions multiple vehicle regions into clusters.Then,cloud supervision systems(CSSs)verify the accuracy of the information transmitted by vehicles.Additionally,the trust scores for vehicles are calculated to reward or penalize them based on the trust evaluation model.Our proposed scheme demonstrates good scalability and effectively addresses the main cause of malicious information distribution among vehicles.Both theoretical and experimental analysis show that our scheme outperforms the compared schemes.展开更多
基金The Scientific Research Fund Project of Yunnan Education Department (2024J0634)The Talent Project of Yunnan University of Finance and Economics (2022D13)The Foundation of Yunnan Key Laboratory of Service Computing (YNSC24305)。
文摘Habitat quality plays a crucial role in enhancing the regional ecological environment and safeguarding biodiversity,with topography being a key element influencing the structure and function of ecosystem services.This research aims to assess habitat suitability across various topographic gradients,analyze the spatial heterogeneity of habitat quality between 2000 and 2020,and explore the relationship between influencing factors and habitat quality.InVEST model is used to evaluate the spatial-temporal evolution characteristics of habitat quality in Zhao-tong City,focusing on how topographic gradients impact habitat quality distribution.The study also delves into the factors affecting habitat quality in Zhaotong City,including land use patterns,elevation,slope,average annual temperature and other variables.The results indicate three key aspects of this system.(1)During the study period,the land use types were mainly forest land,farmland and grassland,with construction land experiencing the most significant increase.(2)From 2000 to 2020,the quality areas of high and medium habitats in Zhaotong City de-creased,while the quality areas of medium-high,medium-low and low habitats increased.(3)The study revealed a notable topographic gradient effect on habitat quality,with the primary driver shifting from GDP to land use type and subsequently to average annual precipitation in Zhaotong City.The transfer between different grades of habitat quality mainly presents the characteristics of“descending”transfer,with medium-low quality habitats typically found on medium-low topographic gradients and medium-high quality habitats on medium-high gradients.Cross-detection results show that land use type exhibited the strongest correlation with other influencing factors.Therefore,this study can provide a scientific basis for policy makers to protect biodiversity,enhance ecosystem services and promote regional economic development.
基金The Yunnan University of Finance and Economics Graduate Innovation Fund Project(2023YUFEYC118)The Key Project of Philosophy and Social Science Research Base of Yunnan Province(JD2019ZD03)。
文摘The“toilet improvement”initiative has been actively responded to and implemented across China to improve the local sanitation environment and service quality since 2015..This paper takes Yunnan Province as an example to evaluate the impact of this measure on the competitiveness of ecotourism in rural traditional villages.The ArcGIS tool was used to compare and screen the geographic environmental characteristics of six batches of 778 villages in Yunnan Province that were evaluated as national-level traditional villages in the early stage,and 37 villages with the same elevation changes and slope were selected for a comparative analysis,to reduce the impact of differences in three-dimensional topography and geomorphology.Combined with the TOPSIS comprehensive evaluation method and OLS econometric regression model,this study examined the ecotourism competitiveness of the 37 selected traditional villages and the impact of the toilet improvement initiative on their competitiveness.The results show that the ecotourism competitiveness of traditional villages in Yunnan Province is generally low,and there are obvious hierarchical characteristics.The road choice,regional distribution quantity,distance and service accessibility of public toilet construction have a significant influence on the overall ecotourism competitiveness of the villages in Yunnan Province.Therefore,three suggestions are put forward:strengthen the ecotourism construction of traditional villages in Yunnan Province as a whole and in each local area,pay attention to and strengthen the quantity and quality of construction of the public toilets relevant to ecotourism in traditional villages,and pay attention to the accessibility and service scope of the public toilets in the construction process.
基金supported the by Anhui Provincial Natural Science Foundation under Grant 2308085MF223in part by the Open Fund of State Key Laboratory for Novel Software Technology under Grant KFKT2022B33+1 种基金in part by the by the Foundation of Yunnan Key Laboratory of Service Computing under Grant YNSC23106in part by the Key Project on Anhui Provincial Natural Science Study by Colleges and Universities under Grant 2023AH050495,2024AH051078 and Grant KJ2020A0513.
文摘Advancements in the vehicular network technology enable real-time interconnection,data sharing,and intelligent cooperative driving among vehicles.However,malicious vehicles providing illegal and incorrect information can compromise the interests of vehicle users.Trust mechanisms serve as an effective solution to this issue.In recent years,many researchers have incorporated blockchain technology to manage and incentivize vehicle nodes,incurring significant overhead and storage requirements due to the frequent ingress and egress of vehicles within the area.In this paper,we propose a distributed vehicular network scheme based on trust scores.Specifically,the designed architecture partitions multiple vehicle regions into clusters.Then,cloud supervision systems(CSSs)verify the accuracy of the information transmitted by vehicles.Additionally,the trust scores for vehicles are calculated to reward or penalize them based on the trust evaluation model.Our proposed scheme demonstrates good scalability and effectively addresses the main cause of malicious information distribution among vehicles.Both theoretical and experimental analysis show that our scheme outperforms the compared schemes.
