[Objective]The paper uses Geographic Information System(ArcGIS)as a platform to discuss the study of DEM data on the digital construction of rural landscape databases and the coupling relationship in geographic space ...[Objective]The paper uses Geographic Information System(ArcGIS)as a platform to discuss the study of DEM data on the digital construction of rural landscape databases and the coupling relationship in geographic space of rural landscape.The aim is to further expand the coverage of China's land space digitization and provide practical theoretical basis and development possibility of quantitative planning for village level administrative zoning research.[Method]In this paper,Xiangyu Village,Junzhuang Town,Mentougou,West Beijing,is selected as the research object,and the document space database of the study area is constructed by building digital elevation model(DEM),ArcGIS stacked map weighting and visual interpretation methods.Moreover,its elevation equivalence,slope direction,and water flow direction are visually analyzed.[Result]The mountainous terrain and hydrological characteristics of Xiangyu Village are roughly consistent with the village layout;the living environment of Xiangyu Village is consistent with the terrain and texture,and it belongs to the rural landscape system of mountains,valleys and small watersheds.[Conclusion]The results obtained through data visualization analysis are basically consistent with the traditional village planning pattern of Xiangyu Village;the rural landscape based on village level administrative divisions is still in the traditional planning stage,and there is great development space for village level geographic spatial survey.Therefore,it is necessary for relevant practitioners to make more contributions to fill the full coverage of China's land space digitization.展开更多
秦岭是中国的“中央水塔”,研究秦岭北麓矿山生境质量的时空演变特征对区域生态保护和可持续发展意义重大。为了评估小流域背景下人类活动对矿山生态环境的影响,该研究针对沣河流域内的重点工程祥峪铁矿区,基于遥感影像提取其1985、2002...秦岭是中国的“中央水塔”,研究秦岭北麓矿山生境质量的时空演变特征对区域生态保护和可持续发展意义重大。为了评估小流域背景下人类活动对矿山生态环境的影响,该研究针对沣河流域内的重点工程祥峪铁矿区,基于遥感影像提取其1985、2002、2010年和2022年土地利用变化,结合InVEST(integrated valuation of ecosystem services and tradeoffs)模型和地理探测器定量分析该矿区生境质量变化与驱动因素。结果表明:祥峪铁矿区的土地利用变化主要由旱地逐步转变为林地和工业用地,疏林地转入面积达到18245505.71 m^(2),退耕还林还草工程取得显著成效;祥峪铁矿区生境质量指数由0.50下降为0.49,标准差由0.06增加为0.09,说明生境质量有所下降,空间差异不断扩大,区域整体平均生境退化度降低,但工业用地迅速扩张对周边林地产生持续影响;生境质量变化是自然因素和人文因素共同作用的结果,其中,土地利用变化是造成生态环境脆弱的主要原因,对生境质量变化的解释力达到0.82。该研究可为分析其他类似矿区生态环境演变,推动景观格局的优化和生态文明建设提供科学参考。展开更多
文摘[Objective]The paper uses Geographic Information System(ArcGIS)as a platform to discuss the study of DEM data on the digital construction of rural landscape databases and the coupling relationship in geographic space of rural landscape.The aim is to further expand the coverage of China's land space digitization and provide practical theoretical basis and development possibility of quantitative planning for village level administrative zoning research.[Method]In this paper,Xiangyu Village,Junzhuang Town,Mentougou,West Beijing,is selected as the research object,and the document space database of the study area is constructed by building digital elevation model(DEM),ArcGIS stacked map weighting and visual interpretation methods.Moreover,its elevation equivalence,slope direction,and water flow direction are visually analyzed.[Result]The mountainous terrain and hydrological characteristics of Xiangyu Village are roughly consistent with the village layout;the living environment of Xiangyu Village is consistent with the terrain and texture,and it belongs to the rural landscape system of mountains,valleys and small watersheds.[Conclusion]The results obtained through data visualization analysis are basically consistent with the traditional village planning pattern of Xiangyu Village;the rural landscape based on village level administrative divisions is still in the traditional planning stage,and there is great development space for village level geographic spatial survey.Therefore,it is necessary for relevant practitioners to make more contributions to fill the full coverage of China's land space digitization.
文摘秦岭是中国的“中央水塔”,研究秦岭北麓矿山生境质量的时空演变特征对区域生态保护和可持续发展意义重大。为了评估小流域背景下人类活动对矿山生态环境的影响,该研究针对沣河流域内的重点工程祥峪铁矿区,基于遥感影像提取其1985、2002、2010年和2022年土地利用变化,结合InVEST(integrated valuation of ecosystem services and tradeoffs)模型和地理探测器定量分析该矿区生境质量变化与驱动因素。结果表明:祥峪铁矿区的土地利用变化主要由旱地逐步转变为林地和工业用地,疏林地转入面积达到18245505.71 m^(2),退耕还林还草工程取得显著成效;祥峪铁矿区生境质量指数由0.50下降为0.49,标准差由0.06增加为0.09,说明生境质量有所下降,空间差异不断扩大,区域整体平均生境退化度降低,但工业用地迅速扩张对周边林地产生持续影响;生境质量变化是自然因素和人文因素共同作用的结果,其中,土地利用变化是造成生态环境脆弱的主要原因,对生境质量变化的解释力达到0.82。该研究可为分析其他类似矿区生态环境演变,推动景观格局的优化和生态文明建设提供科学参考。
