Spatiotemporal Variation and Factors Affecting Water Conservation Function in Gansu Province

Shang Tingting; Zhang Yaqun; Ren Yangan

doi:10.13961/j.cnki.stbctb.2024.06.025

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Spatiotemporal Variation and Factors Affecting Water Conservation Function in Gansu Province

- Spatiotemporal Variation and Factors Affecting Water Conservation Function in Gansu Province
- Bulletin of Soiland Water Conservation Vol. 44, Issue 6, Pages: 237-247(2024)
- 作者机构：
  
  1. 甘肃省生态环境科学设计研究院,甘肃,兰州,730020
  2. 兰州大学资源环境学院,甘肃,兰州,730020
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.06.025
  CLC： X143;X171
- Published：2024
- 稿件说明：
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Shang Tingting, Zhang Yaqun, Ren Yangan. Spatiotemporal Variation and Factors Affecting Water Conservation Function in Gansu Province[J]. Bulletin of Soiland Water Conservation, 2024, 44(6): 237-247.
DOI：

Shang Tingting, Zhang Yaqun, Ren Yangan. Spatiotemporal Variation and Factors Affecting Water Conservation Function in Gansu Province[J]. Bulletin of Soiland Water Conservation, 2024, 44(6): 237-247. DOI： 10.13961/j.cnki.stbctb.2024.06.025.

摘要

[目的] 探究甘肃省水源涵养服务功能的时空变化特征及其影响因素，为区域水资源管理决策和水源涵养功能恢复提供参考和依据。[方法] 基于InVEST模型对甘肃省2001—2023年水源涵养量时空动态变化状况开展定量评估，并运用地理探测器分析甘肃省水源涵养服务功能的影响因素。[结果] ①2001—2023年甘肃省平均水源涵养量9.24 mm，不同时期水源涵养量波动较小，与降水量和产水量变化趋势一致，均呈现先上升后下降趋势。②2001—2023年甘肃省不同土地利用类型平均水源涵养能力排序为：耕地>草地>林地>城镇建设用地>未利用地>水域。③降水量是影响甘肃省水源涵养量变化的最主要因素。降水量与蒸散发量、降水量与土地利用类型，降水量与高程间交互作用对甘肃省水源涵养服务功能空间分异影响最为显著。[结论] 甘肃省水源涵养量整体上呈现西北低东南高的分布格局，水源涵养功能变化的主要影响因素是气候和人类活动。

Abstract

[Objective] The temporal and spatial variation characteristics and the factors affecting the water conservation function in Gansu Province were studied to provide a reference and basis for regional water resources management decision-making and water conservation function recovery. [Methods] The dynamic changes in water conservation on the temporal and spatial scale in Gansu Province from 2001 to 2023 were evaluated quantitatively using the InVEST model

and the influencing factors of the water conservation function were analyzed using the geographic detector. [Results] ① The average water conservation in Gansu Province from 2001 to 2023 was 9.24 mm

and the water conservation fluctuated little during different periods. The change in water conservation was consistent with the precipitation and water yield

showing an upward and then a downward trend. ② From 2001 to 2023

the average water conservation capacity of different land use types in Gansu Province was ranked as cultivated

grass

forest

urban construction

unused land

and water area. ③ Precipitation was the most important driver for the change of water conservation in Gansu Province

and the interactions between precipitation and evapotranspiration

land use type

and elevation had the most significant influence on the spatial difference of the water conservation service function in Gansu Province. [Conclusion] The overall distribution pattern of water conservation in the Gansu Province was lower in the northwest and higher in the southeast. The change in water conservation function was mainly influenced by climate factors and human activities.

关键词

Keywords

references

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