摘要
选取2000和2020年拉萨市道路网络为研究对象,基于2000和2020年两期LUCC数据,采用缓冲区分析方法并结合土地利用转移矩阵对路网影响的区带内土地利用转移情况进行分析,然后重新考虑加入建设用地因子并根据全国单位面积ESV当量表对研究区的ESV当量进行修正,探究其ESV的时空演变趋势。结果表明:1)2000—2020年研究区耕地面积有所减少,林地、水域、建设用地和未利用地面积分别有不同程度的增加,草地多年来在路网的影响下仍居主导地位;2)区带内ESV流动量总体上减少;3)路网影响的北部16—20 km以内的ESV单项生态服务类型为最多,分别有原料生产、气候调节、土壤保持和维持养分循环,其ESV从较低值区减少到低值区。
The road network in Lhasa in 2000 and 2020 was selected as the research object.Based on the LUCC data in 2000 and 2020,the buffer analysis method and the land use transfer matrix were used to analyze the land use transfer in the zone affected by the road network,and then by reconsidering adding the construction land factor and revising the ESV equivalent of the study area according to the national unit area ESV equivalent table,the temporal and spatial evolution trend of its ESV was explored.The results show that:1)The area of cultivated land decreased from 2000 to 2020,and the areas of forest land,water area,construction land and unused land increased in different degrees,and grassland still dominated under the influence of road network for many years;2)The flow of ESV in the area is generally reduced;3)The single ecological service types of ESV within 16—20 km in the north affected by the road network are the most,including raw material production,climate regulation,soil conservation and maintenance of nutrient cycle.Its ESV reduced from the lower value area where most of the area is within the range to the low value area.
作者
王浩楠
余凡
万华伟
郑昊天
WANG Haonan;YU Fan;WAN Huawei;ZHENG Haotian(College of Geomatics&Urban Spatial Informatics,Beijing University of Civil Engineering and Architecture,Beijing 102616,China;Satellite Application Center for Ecology and Environment,MEE,Beijing 100094,China)
出处
《测绘与空间地理信息》
2024年第8期11-17,共7页
Geomatics & Spatial Information Technology
基金
国家重点研发计划项目——陆路交通基础设施生态环境影响跟踪监测及立体巡查技术(2021YFB2600101)资助。
关键词
拉萨市
道路网络
土地利用
时空演变
Lhasa city
road network
land use
spatiotemporal evolution
