Since 2011,certain advances have been made through the resource investigation,metallogenesis research,mining supervision and environmental protection of ion-adsorption type rare earth element (REE) deposit in South Ch...Since 2011,certain advances have been made through the resource investigation,metallogenesis research,mining supervision and environmental protection of ion-adsorption type rare earth element (REE) deposit in South China.Firstly,some progress has been made in REE prospecting in Jiangxi,Guangdong,Guangxi and Yunnan.REE deposits are not only found within the weathering crusts of granites and felsic volcanic rocks,but also within the weathering crusts of epimetamorphic rocks and basic magmatic rocks.Secondly,the methods of exploration,delineating ore bodies and calculation of reserves have been improved,which intuitively reflect the thickness,REE composition and value of weathering crust.Thirdly,the relationship between REEs and weathering degree and the rule of distribution,migration and enrichment of REEs in the weathering profile was summarized through the analysis of big data,which can predict the metallogenetic horizon of REEs.Fourthly,a method for quick,accurate and dynamic investigation of the REE deposit has been established by using high resolution remote sensing technology.Finally,the relation between the production status of REE mines and water pollution has been revealed based on long-term hydrochemical monitoring data of rivers and wells in mines and surrounding areas.展开更多
文章以地理信息系统(geographic information system,GIS)为手段,结合安徽省生态环境现状,建立安徽省生态环境敏感区保护红线的指标体系,利用生态学定量指标评价方法,划定安徽省生态环境敏感区保护红线,为下一步全省生态保护红线划定提...文章以地理信息系统(geographic information system,GIS)为手段,结合安徽省生态环境现状,建立安徽省生态环境敏感区保护红线的指标体系,利用生态学定量指标评价方法,划定安徽省生态环境敏感区保护红线,为下一步全省生态保护红线划定提供参考。展开更多
新的国土空间总体规划编制体系提出构建不同层次和类型、功能复合、安全韧性的城乡生活圈,在总体规划层面如何划定城乡社区生活圈是重要的基础性工作。山坝相间是我国西南地区典型的地理特征,山坝地区的经济社会发展水平、居民出行特征...新的国土空间总体规划编制体系提出构建不同层次和类型、功能复合、安全韧性的城乡生活圈,在总体规划层面如何划定城乡社区生活圈是重要的基础性工作。山坝相间是我国西南地区典型的地理特征,山坝地区的经济社会发展水平、居民出行特征,以及公共服务设施配置水平存在较大差异。文章从联合国可持续发展目标(Sustainable Development Goals,SDGs)所倡导的建设包容、安全、有风险抵御能力和可持续的城市及人类住区的目标出发,从地理特征分析入手,提出结合山坝地域结构特征的城乡社区生活圈划定方法:以山坝地域的实际出行时间的差异性框定城乡社区生活圈的基础范围;结合西南地区多民族聚集特征,以及多民族生活交往需求,修正城乡社区生活圈范围;通过抽样调查方法,验证划定范围及公共服务布局的准确性。最后,利用手机信令数据,分析人口分布的时空差异,判断城乡社区生活圈人口活动的空间结构特征,优化分区分级公共服务中心体系的布局和标准。展开更多
永久基本农田划定既要考虑耕地的自然质量条件,又要考虑经济、社会、生态、规划等因素,开展立地条件评价已经成为永久基本农田划定的重要技术支撑。本研究以上海市为例,运用LESA体系(land evaluation and site assessment),构建由正向...永久基本农田划定既要考虑耕地的自然质量条件,又要考虑经济、社会、生态、规划等因素,开展立地条件评价已经成为永久基本农田划定的重要技术支撑。本研究以上海市为例,运用LESA体系(land evaluation and site assessment),构建由正向因子和反向因子共同组成的多因素因子评价指标体系,采用GIS空间分析的手段进行基本农田立地条件评价分析。结果表明,LESA体系综合评价能够充分考虑区域的差异性,全面体现各类因素的适宜性和限制性,能够为永久基本农田划定提供较综合全面的决策参考。展开更多
文摘Since 2011,certain advances have been made through the resource investigation,metallogenesis research,mining supervision and environmental protection of ion-adsorption type rare earth element (REE) deposit in South China.Firstly,some progress has been made in REE prospecting in Jiangxi,Guangdong,Guangxi and Yunnan.REE deposits are not only found within the weathering crusts of granites and felsic volcanic rocks,but also within the weathering crusts of epimetamorphic rocks and basic magmatic rocks.Secondly,the methods of exploration,delineating ore bodies and calculation of reserves have been improved,which intuitively reflect the thickness,REE composition and value of weathering crust.Thirdly,the relationship between REEs and weathering degree and the rule of distribution,migration and enrichment of REEs in the weathering profile was summarized through the analysis of big data,which can predict the metallogenetic horizon of REEs.Fourthly,a method for quick,accurate and dynamic investigation of the REE deposit has been established by using high resolution remote sensing technology.Finally,the relation between the production status of REE mines and water pollution has been revealed based on long-term hydrochemical monitoring data of rivers and wells in mines and surrounding areas.
文摘新的国土空间总体规划编制体系提出构建不同层次和类型、功能复合、安全韧性的城乡生活圈,在总体规划层面如何划定城乡社区生活圈是重要的基础性工作。山坝相间是我国西南地区典型的地理特征,山坝地区的经济社会发展水平、居民出行特征,以及公共服务设施配置水平存在较大差异。文章从联合国可持续发展目标(Sustainable Development Goals,SDGs)所倡导的建设包容、安全、有风险抵御能力和可持续的城市及人类住区的目标出发,从地理特征分析入手,提出结合山坝地域结构特征的城乡社区生活圈划定方法:以山坝地域的实际出行时间的差异性框定城乡社区生活圈的基础范围;结合西南地区多民族聚集特征,以及多民族生活交往需求,修正城乡社区生活圈范围;通过抽样调查方法,验证划定范围及公共服务布局的准确性。最后,利用手机信令数据,分析人口分布的时空差异,判断城乡社区生活圈人口活动的空间结构特征,优化分区分级公共服务中心体系的布局和标准。
文摘永久基本农田划定既要考虑耕地的自然质量条件,又要考虑经济、社会、生态、规划等因素,开展立地条件评价已经成为永久基本农田划定的重要技术支撑。本研究以上海市为例,运用LESA体系(land evaluation and site assessment),构建由正向因子和反向因子共同组成的多因素因子评价指标体系,采用GIS空间分析的手段进行基本农田立地条件评价分析。结果表明,LESA体系综合评价能够充分考虑区域的差异性,全面体现各类因素的适宜性和限制性,能够为永久基本农田划定提供较综合全面的决策参考。
