【摘 要】
：
The concepts of regional resources and environmental carrying capacity are important aspects of both academic inquiry and government policy. Although notable results have been achieved in terms of eva
【出 处】
：
Journal of Geographical Sciences
论文部分内容阅读
The concepts of regional resources and environmental carrying capacity are important aspects of both academic inquiry and government policy. Although notable results have been achieved in terms of evaluating both these variables, most researchers have
其他文献
2019年4月28—30日,由北京市公安局主办的"净网2019——全民网络安全教育展"在北京展览馆举行。本次展览旨在系统宣传普及网络安全基础知识,集中展示公安机关"净网2019"专项行动阶段性成效。展览分"法律法规是基础""系统安全是核心""网络犯罪是顽疾""网民行动是重点""企业责任是关键"5部分,内容涵盖网络安全法律法规发展演变脉络、与广大群众切身利益密切相关的十个法律问题;关键信息基础设施概
Lake ice phenology is considered a sensitive indicator of regional climate change. We utilized time series information of this kind extracted from a series of multi-source remote sensing(RS) datasets
The knowledge of geomorphological evolution from an estuary to a river delta is necessary to form the formulation of comprehensive land-ocean interaction management strategies. In this study, the domi
Soil stores a large amount of the terrestrial ecosystem carbon(C) and plays an important role in maintaining global C balance. However, very few studies have addressed the regional patterns of soil or
浑善达克沙地沙漠化主要以风蚀坑发育导致的固定沙丘活化为表现形式。利用2010、2013、2016年3期高分辨率卫星影像数据及地面调查数据,借助ArcGIS软件,采用目视解译方法,分析探讨了风蚀坑形态变化及其与气候要素和人类活动之间的关系。根据风蚀坑在固定沙丘发育部位及几何形状,可分为碟形、碗形、槽形、簸箕形和不规则形。2010—2016年,各类风蚀坑变化形式以扩展和新生为主,风蚀坑总面积及数量趋于
通过对腾格里沙漠边缘区相关气候灾害的史料和文献进行搜集整理与归纳分析,利用统计分组、时间数列、滑动平均、旱涝等级划分等方法对研究区1426—1949年旱涝灾害的时空变化特征和干湿变化特征进行了研究。结果表明:1426—1949年,腾格里沙漠边缘区共发生旱灾149次(平均每3.52年1次)、涝灾98次(平均每5.35年1次);因各县、区的地貌和建置时间不同,旱涝灾害具有明显的时空差异,在时间尺度上,
The southwest alpine gorge region is the major state base of hydropower energy development in China and hence planned many cascading hydropower stations. After the reservoir impoundment, the intense w
Hyporheic zone(HZ) influences hydraulic and biogeochemical processes in and alongside streams, therefore, investigating the controlling geographic factors is beneficial for understanding the hydrologi
Satellite-based products with high spatial and temporal resolution provide useful precipitation information for data-sparse or ungauged large-scale watersheds. In the Lower Lancang-Mekong River Basin,
The anastomosing river that is present within the First Great Bend of the Yellow River is different from other sand-bedded rivers of this type because it contains gravel-bedded materials. It is theref