Subjects: Geosciences >> Geography submitted time 2024-05-20 Cooperative journals: 《干旱区地理》
Abstract：内蒙古自治区作为中国重要的光伏发电基地，近年来盲目建设光伏电站的问题日益突出，掌握区域光伏开发的适宜性、发电潜力和减排效益对光伏产业的健康发展具有重要意义。为了探讨内蒙古自治区光伏开发适宜性与减排效益，综合利用气象、自然地理和经济社会数据，通过构建“气象-地形-位置-植被”光伏开发适宜性综合评价指标体系，利用层次分析法确定评价指标的权重，借助地理信息系统工具对内蒙古自治区光伏开发适宜性进行空间显性评价，进而定量评估在不同开发强度下的光伏发电潜力与减排效益，并对各盟市光伏发电潜力与电力需求进行对比分析。结果表明：（1）内蒙古自治区西部的光伏开发适宜性大于中部和东部，各类适宜区主要分布在西部的阿拉善盟和巴彦淖尔市，光伏开发特别适宜、较适宜和适宜区域的面积占内蒙古自治区总面积的23.66%。（2）内蒙古自治区光伏发电潜力巨大，特别适宜的区域开发12.57%即可满足内蒙古自治区2021年用电量。（3）内蒙古自治区光伏发电潜力与电力需求分布有着较强的空间异质性，空间格局特征显著。（4）内蒙古自治区光伏发电的节能减排效果显著，与传统燃煤火力发电相比，若特别适宜区全部开发，年碳减排量约2.947×109 t，是2021年内蒙古自治区碳排放总量的4.46倍，占我国2021年碳排放总量的21.20%。研究结果为内蒙古自治区光伏电站选址和光伏产业的健康发展提供科学参考和指导建议。
Subjects: Geosciences >> Geography submitted time 2024-03-01 Cooperative journals: 《干旱区研究》
Abstract： Hydropower is an important clean energy source in China. However, the construction and operationcycles of hydropower stations are long, and their long-term impact on the ecosystem is unclear. In arid areas, withtheir unique geographical location and dry climate, ecosystems often have limited self- regulation abilities,making restoring the local ecological environment after damage challenging. This study focuses on LongyangxiaHydropower Station, a representative hydropower station in an arid region of China, and uses Landsat seriessatellite data and land remote sensing products to monitor the ecological environment surrounding thehydropower station from 2000 to 2021. The study employs buffer zone and trend analyses to assess the impact onthe ecological environment arounding the Hydropower. The results indicate the following: (1) The land usepattern around Longyangxia Hydropower Station did not change significantly from 2000 to 2021. However, theproportion of grasslands increased slightly, while that of other land use types decreased slightly. (2) During thesame period, the wetland area around Longyangxia Hydropower Station increased significantly. (3) Thevegetation in the surrounding area of Longyangxia Hydropower Station showed good growth over the past twodecades, with an increase in the proportion of areas with high vegetation coverage. (4) The carbon sequestrationcapacity of vegetation in the vicinity of the hydropower station improved, and vegetation productivity graduallyrecovered as the growth rate of the wetland area decreased.
Subjects: Geosciences >> Geology submitted time 2018-10-23 Cooperative journals: 《干旱区地理》
Abstract： 基于数字高程模型（DEM）及地理信息系统（GIS）技术，系统提取和分析了中条山北麓河流坡降指标、河道陡峭指数及面积高程积分等河流地貌参数。研究表明：河流坡降指标、河道陡峭指数及面积高程积分在永济至解州一带表现出较高的值；综合分析岩性、降水及构造等因素可知，新构造运动是控制中条山北麓河流地貌发育的主要因素，自北向南总体表现出增强的趋势，在永济南活动最强。前人研究表明，中条山北麓断裂晚第四纪以来构造活跃，全新世以来仍有多次活动，但不同部位活动强度各异，解州段晚更新世晚期以来滑动速率相比韩阳段及夏县段高，极高值在出现在永济南一带。可见，基于河流地貌参数获得的中条山北麓新构造运动强弱与断裂晚第四纪以来的活动强弱一致。
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