1990-2017年承德市水源涵养功能时空变化格局与影响因素研究  

Spatial and Temporal Patterns of Water Retention and Its Influencing Factors in Chengde City from 1990 to 2017

作　　者：王冶 薛忠财 王瑞丰 姜白杨 孙百生[1,2] 常佳宁 WANG Ye;XUE Zhong-cai;WANG Rui-feng;JIANG Bai-yang;SUN Bai-sheng;CHANG Jia-ning(College of Resources and Environmental Sciences,Hebei Normal University for Nationalities,Chengde 067000,China;􀆰Key Laboratory of Mountain Geological Environment of Hebei Province,Chengde 067000,China;􀆰The Fourth Geological Team of Hebei Geology and Mineral Bureau,Chengde 067000,China)

机构地区：[1]河北民族师范学院资源与环境科学学院,河北承德067000 [2]河北省山区地质环境重点实验室,河北承德067000 [3]河北省地矿局第四地质大队,河北承德067000

出　　处：《生态与农村环境学报》2022年第9期1138-1146,共9页Journal of Ecology and Rural Environment

基　　金：承德市科学技术研究与发展计划(201904A054);河北民族师范学院重大招标课题(ZD2019001);河北民族师范学院博士科研启动基金(DR2009001)。

摘　　要：承德市是京津冀地区水源涵养功能区的重要组成部分,具有重要生态价值与研究意义。基于InVEST模型和重心迁移模型定量分析1990-2017年承德市水源涵养功能时空变化格局,并采用情景模拟分析法评估气候因素与土地利用/覆被变化对水源涵养功能的影响。结果表明:(1)承德市多年平均水源涵养量为33.12×10^(8) m^(3)·a,平均水源涵养深度为83.9 mm;(2)近28年,承德市水源涵养功能呈现先减小后增加的变化趋势,水源涵养功能重心总体由西北向东南方向迁移,迁移距离为14.28 km;(3)水源涵养功能与降水、归一化植被指数(NDVI)呈显著正相关,与土地利用综合指数呈显著负相关;(4)气候变化和土地利用/覆被变化对承德市水源涵养功能重心迁移的贡献率分别为94.49%和5.51%,气候变化是水源涵养功能重心迁移的主导因素,土地利用/覆被变化对水源涵养功能重心迁移的影响逐渐增大。研究成果可以为推进承德市生态系统服务研究提供科学支撑。Chengde City is an important ecological barrier in the Jing-Jin-Ji region and a key water retention area. Quantitative assessment of the water retention function of this region has important ecological and research implications. InVEST model and center of gravity migration model were used to quantify temporal and spatial changes in the water retention function of Chengde City from 1990 to 2017;scenario analysis method was used to evaluate the effects of the changes of climate and land use/cover on water retention function. The results show as follows: The annual average water retention was 33.12×10^(8) m^(3)·a, and the average water retention depth was 83.9 mm. Over the past 28 years, the water retention function in Chengde City first decreased and then increased. The center of gravity of the water retention function migrated from the northwestern to the southeastern part of the city over a distance of 14.28 km. The water retention function was significantly and positively correlated with precipitation and the normalized difference vegetation index(NDVI) and significantly and negatively correlated with the comprehensive land-use index. The relative contributions of climate and land-use changes to the migration of the water retention function in Chengde City were 94.49% and 5.51%, respectively. Climate change was the most important factor affecting the migration of the water retention function, and the effect of land-use change on the migration of the water retention function gradually increased over the study period. Our findings provide new insights that could aid future researches on ecosystem services in Chengde City.

关 键 词：水源涵养 InVEST模型 气候变化 土地利用/覆被变化 承德市 

分 类 号：X821[环境科学与工程—环境工程] K903[历史地理—人文地理学]