摘要
基于3S技术,根据漓江流域2000-2016年土地利用数据对土地利用变化进行分析,利用中国陆地生态系统单位面积生态服务价值当量表,结合漓江流域的生物量因子进行系数修正,对漓江流域17年间生态系统服务价值的时空变化进行了研究。结果表明:研究期间漓江流域建设用地明显增加,年均增加15.63%,林地呈微弱增加后减少的趋势,耕地和水域面积逐年减少,年均分别减少0.25%和0.51%;漓江流域生态系统服务总价值呈减少趋势,从2000年的92.48亿元减少到2016年的88亿元,建设用地的增加是区域生态系统服务价值减少的最主要原因;生态系统服务价值的极低区域出现增加趋势,且主要出现在城市扩张的区域,中值及低值区域逐渐被极低区域所替代,部分极高值区域出现减少趋势。城镇及旅游业发展是土地利用变化的主要驱动因素。
The calculation of ecosystem service value is of great significance to the environment, economy, human welfare and the formulation of relevant policies. Based on the 3 S technology, the paper analyzed land use change by the date of land use along Lijiang River basin from 2000 to 2016. The spatial and temporal variations of ecosystem service value in Lijiang River basin during 17 years were studied by ecosystem service value per unit area of different terrestrial ecosystem in China, combined with coefficient correction of biomass factors in Lijiang River basin. The study showed that during the study period the construction land in Lijiang River basin increased significantly, with an annual increase of 15.63%. Woodland showed a slight increase in earlier stage and a decreasing trend in later stage. The area of cultivated land and water area decreased year by year, with an average decrease of 0.25% and 0.51% respectively. The total value of ecosystem service in the in Lijiang River basin decreased, from 9.248 billion yuan in 2000 to 8.8 billion yuan in 2016. The increase in construction land mainly caused the value decline of regional ecosystem service. There was an increasing trend in the extremely low area of ecosystem service value, and this trend mainly appeared in the area of urban expansion. The middle and low value areas are gradually replaced by extremely low areas. And there was a decrease trend in several high value regions. Rapid development of urban tourism is the main driving factor of land use change.
作者
李宁
王浩宇
王金叶
黄良珂
LI Ning;WANG Hao-yu;WANG Jin-ye;HUANG Liang-ke(College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China;Guangxi Key Laboratory for Spatial Information and Geomat-ics, Guilin University of Technology, Guilin 541004, China;Bowen College of Management, Guilin University of Technology, Guilin 541006, China)
出处
《桂林理工大学学报》
CAS
北大核心
2019年第3期685-692,共8页
Journal of Guilin University of Technology
基金
国家自然科学基金项目(41704027)
科技支撑计划项目(2012BAC16B04)
广西高校中青年教师科研基础能力提升项目(2017KY1360)
广西空间信息与测绘重点实验室开放基金项目(16-380-25-31
16-380-25-18
15-140-07-34)
关键词
土地利用
时空变化
生态系统服务价值
漓江流域
land use
spatiotemporal change
ecosystem service value
Lijiang River basin
