干旱区研究

干旱区研究 >

2023 , Vol. 40 >Issue 4: 605 - 614

DOI: https://doi.org/10.13866/j.azr.2023.04.09

水土资源

人类活动对秦岭月河流域径流变化的影响分析

  • 段雨佳 ,
  • 何毅 ,
  • 赵杰 ,
  • 吴琼
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  • 1.西北大学城市与环境学院，陕西 西安 710127
    2.陕西省地表系统与环境承载力重点实验室，陕西 西安 710127
段雨佳(2000-), 女, 主要从事生态水文研究. E-mail: duanyujia@stumail.nwu.edu.cn

收稿日期: 2022-03-29

  修回日期: 2023-01-06

  网络出版日期: 2023-04-28

基金资助

中国南北过渡带综合科学考察(2017FY100904);陕西省大学生创新创业训练计划项目(S202110697353)

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Analysis of impact of human activities on runoff changes in Yue River Basin of the Qinling Mountains

  • Yujia DUAN ,
  • Yi HE ,
  • Jie ZHAO ,
  • Qiong WU
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  • 1. College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, Shaanxi, China
    2. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Xi’an 710127, Shaanxi, China

Received date: 2022-03-29

  Revised date: 2023-01-06

  Online published: 2023-04-28

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摘要

气候变化和人类活动是河川径流变化的主要驱动力。在相似气候的前提下，人类活动是流域径流变化的主导因素，定量识别人类活动对径流变化的作用机制对深入探究径流的变化特征具有重要意义。本研究以秦岭月河流域为研究对象，基于流域内水量平衡的基本原理，在相似气候的前提下，结合土地利用/覆被变化（LUCC）和归一化植被指数（NDVI）的变化，分析月河流域的径流变化来量化人类活动对径流的影响程度。结果表明：（1） 1960—2018年流域内径流量的平均值为8.3×108 m3,径流整体呈现出减少的趋势，变化趋势不显著。（2） 在相似气候的前提下，本研究共得出6组气候相似年组，其中有3组年径流量增加，2组年径流量减少。（3） 以第3组相似年组（2000年和2016年）为例来定量区分气候变化和人类活动对流域径流的影响，2016年与2000年相比，径流减少了4.7×108 m3。（4） 在第3组相似年组的时段内有25751.4 hm2的耕地转化为林地，林地面积增加了24998.9 hm2。（5）NDVI的变化主要是由于人类活动所致，同一时段内NDVI增加的面积为242652.0 hm2，NDVI的变化趋势与径流量变化趋势相反。本研究可为分析人类活动对秦岭河川径流变化的影响提供理论依据。

关键词： 月河流域; 人类活动; 相似气候条件; LUCC; NDVI

本文引用格式

段雨佳 , 何毅 , 赵杰 , 吴琼 . 人类活动对秦岭月河流域径流变化的影响分析[J]. 干旱区研究, 2023 , 40(4) : 605 -614 . DOI: 10.13866/j.azr.2023.04.09

Abstract

Climate change and human activities are the main driving forces of river runoff variation. Under the similar weather condition (SWC), human activities are the dominant factors for change of discharge in the basin that quantitative identification on the action mechanism of human activities on runoff change has great significance to further explore the change characteristics of runoff. This study was conducted in the Yue River basin of the Qinling Mountains. Combined with Land-Use and Land-Cover Change (LUCC) as well as Normalized Difference Vegetation Index (NDVI), human activities’ impacts on runoff is quantified by analyzing runoff changes in the Yue River basin with similar weather condition. The results show that: the average runoff value from 1960 to 2018 is 8.3×108 m3. The discharge shows a decreasing trend as a whole, and the change trend is not significant. Under the similar weather condition, this research obtains 6 paired-years. Among them, the annual runoff of 3 paired-years increased and that of 2 paired-years decreased. Taking the third paired-year (2000 and 2016) as an example to quantitatively distinguish the impact of climate change and human activities on runoff which reduced by 4.7×108 m3 in 2016 compared with 2000. In the third paired-year (2000 and 2016), 25751.4 hm2 of arable land was converted into forest land, and the forest land area increased by 24998.9 hm2. The NDVI change is mainly caused by human activities. The area increased by NDVI in 2016 was 242652.0 hm2 compared with that in 2000. The change trend of NDVI is opposite to that of runoff. This study can provide a theoretical basis for quantitative evaluation for human activities’ impact on river runoff changes within the Qinling Mountains.

Key words： Yue River Basin; human activities; similar weather condition; LUCC; NDVI

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