资源科学 ›› 2020, Vol. 42 ›› Issue (12): 2451-2462.doi: 10.18402/resci.2020.12.15

• 资源生态 • 上一篇    下一篇

涑水河流域土壤保持服务供需关系量化评估

杨丽雯1,2,3(), 王大勇4, 王勇智3, 梁泽2, 吴舒尧2, 李双成2()   

  1. 1.山西能源学院资源与环境工程系,晋中 030060
    2.北京大学地表过程分析与模拟教育部重点实验室,北京 100871
    3.山西师范大学地理科学学院,临汾 041004
    4.山西省气候中心,太原 030006
  • 收稿日期:2020-04-25 修回日期:2020-08-07 出版日期:2020-12-25 发布日期:2021-02-25
  • 通讯作者: 李双成
  • 作者简介:杨丽雯,女,新疆乌鲁木齐人,副教授,主要研究方向为生态系统服务评估。E-mail: wangdayong05@lzb.ac.cn

Quantitative assessment of the supply-demand relationship of soil conservation service in the Sushui River Basin

YANG Liwen1,2,3(), WANG Dayong4, WANG Yongzhi3, LIANG Ze2, WU Shuyao2, LI Shuangcheng2()   

  1. 1. Department of Resources and Environmental Engineering, Shanxi Institute of Energy, Jinzhong 030060, China
    2. Laboratory for Earth Surface Processes, Ministry of Education, Peking University, Beijing 100871, China
    3. School of Geographical Sciences, Shanxi Normal University, Linfen 041004, China
    4. Climate Center of Shanxi Province, Taiyuan 030006, China
  • Received:2020-04-25 Revised:2020-08-07 Online:2020-12-25 Published:2021-02-25
  • Contact: LI Shuangcheng

摘要:

土壤保持服务是一种重要的生态系统调节服务,其供需关系量化评估对流域环境管理具有重要意义。本文基于修正通用水土流失方程(RUSLE)计算涑水河流域土壤保持服务供给量,使用土壤侵蚀导致的单位面积土壤营养元素损失和水库库容损失价值之和计算需求,分析供需平衡状况和影响因素,并使用土壤保持服务居民满意度调查数据检验供需平衡分析结果。结果显示:①2000年和2015年土壤保持服务供给区主要分布于河流上游的中条山山区,土地利用以林地和草地为主,需求区主要分布于河流中下游的冲积平原,土地利用以旱地为主。②2000年和2015年供需平衡区分别占流域总面积的34.80%和76.27%,供需关系的改善主要受需求显著降低的影响,而需求降低主要受降雨侵蚀力减少的影响。本文揭示了涑水河流域土壤保持服务供需数量关系的时空特征和影响因素,可为流域的土地利用规划和自然资源管理等提供理论支撑。

关键词: 土壤保持服务, 供需平衡, 生态系统服务, 量化评估, 土地利用, 居民满意度, 涑水河流域

Abstract:

Soil conservation services is an important ecosystem regulation service. Quantitative assessment of the supply-demand relationship of soil conservation service may play a critical role in the environmental management of watershed. In this study, we calculated the supply of soil conservation service in the Sushui watershed using the Revised Universal Soil Loss Equation (RUSLE), and quantified the demand of soil conservation service using the indicators of per unit soil nutrient loss and reservoir silt cleaning cost. Then we analyzed the relationship between supply and demand, which was validated by data from a questionnaire survey. Our results show that: (1) The supply area of soil conservation service was primarily distributed in the Zhongtiao Mountainous area in the upstream of the river, where the land-use types were mainly woodland and grassland. The demand area of soil conservation service was primarily distributed on alluvial plains in the middle and lower reaches of the river, where the land-use type was non-irrigated farmland. (2) The balanced area of supply and demand in 2000 and 2015 were 34.80% and 76.27% of the Sushui watershed area, respectively. The improvement of supply-demand relationship was due to the reduction of demand, which was mainly because of the decrease of rainfall erosivity. Our study revealed the status and influencing factors of the spatial and quantitative relationship between supply and demand, which could provide a theoretical support for land-use planning and natural resources management.

Key words: soil conservation service, supply-demand balance, ecosystem services, quantitative assessment, land use, residents' satisfaction, Sushui River Basin