辽西北地区防风固沙服务空间流动与辐射效应

doi:10.19741/j.issn.1673-4831.2022.0246

摘要/Abstract

摘要： 生态系统服务空间流动及其辐射区的研究,有助于明确生态系统服务供给区与辐射区之间的空间联系。基于修正风蚀方程模型(RWEQ)评估辽西北地区防风固沙空间分布格局,利用混合单颗粒拉格朗日整合轨迹(HYSPLIT)模型模拟辽西北地区防风固沙服务空间流动路径,识别与计算防风固沙服务的辐射区和辐射效应。结果表明,2020年辽西北地区防风固沙总量为1 220万t,防风固沙能力整体表现为西南部偏高、中部和东北部相对较低,防风固沙服务空间流动路径为195条,大部分向东北和东南方向扩散,两个方向分别为83和70条,占总数的78.46%,辐射范围主要涉及东北、华北及黄渤海海域。中国境内陆地部分辐射区面积为184.82万km²,防风固沙服务减少下风向沙尘量为597.78万t,受益地区包括内蒙古、黑龙江、吉林、山东、北京、河北和辽宁等11个省(区、市)。该研究对辽西北防护林工程防风固沙服务辐射效应实现了量化评估,可为筑牢该地区生态屏障提供决策依据。

关键词: 防风固沙服务, 空间流动, 辐射效应, 辽西北地区

Abstract: Studies on the spatial flow of ecosystem services and their radiation area provide insights into the spatial connection between the supply area and the radiation area of ecosystem services. The spatial distribution pattern of sand-fixing service in a study area of northwest Liaoning Province was evaluated based on the Revised Wind Erosion Equation (RWEQ). The hybrid single-particle Lagrangian integrated trajectory (HYSPLIT) model was used to simulate the service space flow path for sand-fixing service, and to recognize, and calculate the sand-fixing radiative effect of the services. The results show that the total amount of sand-fixing service in northwest Liaoning Province in 2020 was 12.2 million tons, the capacity of sand-fixing was higher in the southwest part and lower in the middle and northeast parts of the study area. Sand-fixing service included 195 spatial flow paths, most of which were distributed towards northeast (83) and southeast (70), accounting for 78.46% of the total area. The radiation scope mainly involved Northeast China, North China, Yellow Sea, and Bohai Sea, covering a total area of 1 848 200 km². Sand-fixing service reduced downwind sand volume by 5 977 800 tons, benefiting 11 provinces (municipalities and autonomous regions) including Inner Mongolia Autonomous Region, Heilongjiang, Jilin, Shandong, Beijing, Hebei, and Liaoning Provinces, etc. These results constitute a robust quantitative estimation of the sand-fixing service radiation effect of the shelter forest project in northwest Liaoning Province, and could provide a decision-making basis towards strengthening the construction of ecological barriers in this area.

Key words: sand-fixing service, spatial flow, radiation effect, northwest Liaoning

中图分类号:

X171.4

王耕, 张红玉. 辽西北地区防风固沙服务空间流动与辐射效应[J]. 生态与农村环境学报, 2023, 39(1): 52-59.

WANG Geng, ZHANG Hong-yu. Spatial Flow and Radiation Effect of Sand-fixing Service in Northwest Liaoning Province[J]. Journal of Ecology and Rural Environment, 2023, 39(1): 52-59.

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