Ai Xucheng,Gao Peng,Mu Xingmin,et al.Impact of Vegetation Changes on Runoff and Sediment Evolution in Forest Regions of the Loess Plateau[J].Research of Soil and Water Conservation,2024,31(03):42-48.[doi:10.13869/j.cnki.rswc.2024.03.016]
黄土高原林区植被变化对水沙演变的影响——以仕望川流域为例
- Title:
- Impact of Vegetation Changes on Runoff and Sediment Evolution in Forest Regions of the Loess Plateau
- 文章编号:
- 1005-3409(2024)03-0042-07
- Keywords:
- Shiwangchuan basin; runoff; sediment discharge; NDVI; vegetation change
- 分类号:
- P333
- 文献标志码:
- A
- 摘要:
- [目的]研究林区植被变化对水沙演变的影响,可以为黄河流域生态环境建设政策的制定与调整提供科学依据。[方法]基于仕望川流域控制水文站大村站1959—2018年的径流量与输沙量数据以及流域内的降水数据,分析了其60年水文变化特征。结合1985—2018年的NDVI数据以及五期土地利用数据,分析讨论了流域水沙变化的植被下垫面驱动效应。[结果]仕望川流域近60年来的径流量和输沙量呈显著减少的趋势(p<0.01),突变年分别在1988年和1983年,而流域内土地利用情况和降水在60年间并无明显的变化趋势,流域内生长季NDVI在2000年前变化不明显,但在2000年后有显著提升趋势。[结论]2000年以前,各种水土保持治理措施的实施是流域径流量与输沙量减少的主要原因; 进入21世纪后,流域内植被质量的提升使径流量与输沙量进一步减少。
- Abstract:
- [Objective] The aims of this study are to examine the influence of forest vegetation changes on water-sediment dynamics, and to provide a scientific basis for formulating and adjusting ecological environment development policies in the Yellow River Basin. [Methods] Based on the runoff and sediment discharge data from the Dacun hydrological station in the Shiwangchuan River Basin from 1959 to 2018, as well as precipitation data within the basin, the hydrological changes over a span of 60 years were analyzed. By combining NDVI data from 1985 to 2018 and land use data from five periods, the vegetation underlying surface driving effects on water-sediment changes in the watershed were analyzed and discussed. [Results] The runoff and sediment discharge in the Shiwangchuan River Basin had shown a significant decreasing trend over the past 60 years(p<0.01), with abrupt changes occurring in 1988 and 1983, respectively. However, there had been no significant trends in land use and precipitation within the watershed during this period. The NDVI during the growing season showed little variation before 2000 but exhibited a significant increasing trend after 2000. [Conclusion] Before 2000, the implementation of various soil and water conservation measures was the main reason for the decrease of runoff and sediment transport in the basin; After entering the 21st century, the improvement of vegetation quality in the basin has further reduced runoff and sediment transport.
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备注/Memo
收稿日期:2023-06-12 修回日期:2023-08-03
资助项目:国家自然科学基金项目“黄土高原水土保持措施潜力及其对河流水沙的调控机制”(U2243211)
第一作者:艾旭城(2001—),男,陕西榆林人,在读硕士研究生,主要从事生态水文及水土保持研究。E-mail:aixucheng@nwafu.edu.cn
通信作者:高鹏(1976—),男,陕西扶风人,研究员,博士,博士生导师,主要从事生态水文及水土保持研究。E-mail:gaopeng@ms.iswc.ac.cn