[1]李天毅,于坤霞,李占斌,等.黄土高原多沙粗沙区泥沙集中度变化特征及驱动因素[J].水土保持研究,2023,30(04):203-209.[doi:10.13869/j.cnki.rswc.2023.04.007.]
　LI Tianyi,YU Kunxia,LI Zhanbin,et al.Variation Characteristics and Driving Factors of Sediment Concentration in Sandy Region of the Loess Plateau[J].Research of Soil and Water Conservation,2023,30(04):203-209.[doi:10.13869/j.cnki.rswc.2023.04.007.]
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黄土高原多沙粗沙区泥沙集中度变化特征及驱动因素

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 30 期数: 2023年04期 页码: 203-209 栏目: 出版日期: 2023-06-10
Title:
Variation Characteristics and Driving Factors of Sediment Concentration in Sandy Region of the Loess Plateau
文章编号:
1005-3409(2023)04-0203-07
作者:
李天毅1,2, 于坤霞1,2, 李占斌1,2, 李 鹏1,2, 贾 路1,2, 杨 志3, 张国军3,魏小燕3
(1.西安理工大学 省部共建西北旱区生态水利国家重点实验室, 西安 710048; 2.西安理工大学 旱区生态水文与灾害防治国家林业局重点实验室, 西安 710048; 3.宁夏回族自治区水土保持监测总站, 银川 750002)
Author(s):
LI Tianyi1,2, YU Kunxia1,2, LI Zhanbin1,2, LI Peng1,2, JIA Lu1,2, YANG Zhi3,Zhang Guojun3,Wei Xiaoyan3
(1.State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, China; 2.Key Laboratory of Ecological Hydrology and Disaster Prevention in Arid Regions, National Forestry Administration, Xi'an University of Technology, Xi'an 710048, China; 3.Ningxia Soil and Water Conservation Monitoring Station, Yinchuan 750002, China)
关键词:
泥沙集中度;  相关性分析;  生态建设措施
Keywords:
sediment concentration;  correlation analysis;  ecological construction measures
分类号:
P333.4
DOI:
10.13869/j.cnki.rswc.2023.04.007.
文献标志码:
A
摘要:
[目的]揭示黄土高原多沙粗沙区的泥沙和泥沙集中度的变化规律,阐明泥沙集中度的影响因素,进而为流域水土流失治理和生态保护提供一定的科学依据。[方法]基于1956—2010年皇甫川、孤山川、秃尾河、窟野河和无定河流域的输沙量数据,利用Mann-Kendall趋势检验法、Pettitt突变点检验法、Morlet小波分析方法分析了黄土高原多沙粗沙区泥沙集中度的时空变化特征,通过Pearson相关系数探究了泥沙集中度与生态建设措施的相关性。[结果](1)1956—2010年,黄土高原多沙粗沙区的输沙量呈现显著减少的趋势,但是皇甫川、孤山川、无定河流域的泥沙集中度呈现显著增加的趋势。(2)孤山川与无定河流域的泥沙集中度具有显著的(p<0.05)突变点,分别为1990年与1986年。(3)研究区泥沙集中度主周期介于15～55 a。(4)径流集中度对于研究区泥沙集中度有显著的影响。除此之外,生态建设措施面积与泥沙集中度有显著的正相关关系,其中梯田、造林和种草对于研究区的泥沙集中度的影响程度最大。[结论] 黄土高原多沙粗沙区的输沙量逐渐减少且越来越集中,泥沙集中度受到降雨径流和生态建设措施等因素影响。
Abstract:
[Objective] The aim of this study is to reveal the variation law of sediment and sediment concentration in the Loess Plateau, clarify the influencing factors on sediment concentration, and provide some scientific bases for soil erosion control and ecological protection in the basin. [Methods] Based on the sediment transport data of Huangfuchuan, Gushanchuan, Tuwei, Kuye and Wuding River basins from 1956 to 2010, the temporal and spatial variation characteristics of sediment concentration in the coarse sediment region were analyzed by using Mann-Kendall trend test, Pettitt change point test and Morlet wavelet analysis. The correlation between sediment concentration and ecological construction measures was explored by Pearson correlation coefficient. [Results](1)From 1956 to 2010, the sediment transports in the study area showed significant decreasing trends, but the sediment concentrations in the Huangfuchuan, Gushanchuan and Wuding river basins showed significant increasing trends.(2)The sediment concentration in Gushanchuan and Wuding River basins had significant abrupt change(p<0.05)in the years of 1990 and 1986, respectively.(3)The main cycle of sediment concentration in the study area was 15～55 years.(4)Runoff concentration had a great impact on sediment concentration in the study area. In addition, the area of ecological construction measures had a significant positive correlation with sediment concentration, and terrace, afforestation and grass planting had the greatest influence on sediment concentration in the study area. [Conclusion] In the Loess Plateau, the amount of sediment is gradually reduced and more and more concentrated. The concentration of sediment is affected by rainfall runoff and ecological construction measures.

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备注/Memo

收稿日期:2022-05-19 修回日期:2022-07-14
资助项目:国家自然科学基金(52079104); 陕西省重点研发计划(2023-ZDLSF-60); 宁夏区水利科技项目(SBZZ-J-2021-12,SBZZ-J-2021-13); 榆林市科技计划项目(CXY2018-2-19)
第一作者:李天毅(1996—),男,山东德州人,硕士研究生,研究方向为水文学及水资源、水土保持。E-mail:lty617148964@163.com
通信作者:于坤霞(1989—),女,河南长垣人,博士,副教授,主要从事非一致性水文频率分析、流域水热耦合平衡研究和气候变化与人类活动对水文过程影响分析研究。E-mail:yukunxia@126.com

更新日期/Last Update: 2023-06-10