气候及下垫面变化对嘉陵江流域径流与输沙的影响
Influences of climate and land surface change on runoff and sediment in Jialing River Basin
查看参考文献13篇
文摘
|
为定量评价气候、下垫面2种驱动因子的变化对嘉陵江流域产流输沙变化的贡献率,采用SWAT模型,对嘉陵江流域1975年以来的径流和输沙过程进行模拟,通过模型控制变量的方法,分析嘉陵江流域径流和泥沙变化的驱动因子。结果表明:1988-2010年的23年间,由于下垫面变化,导致嘉陵江流域径流总量比1956-2010年的平均径流总量减少了1 718.54亿m~3,输沙总量减少了14.62亿t,下垫面变化对径流量减少的贡献率为76.19%,对输沙量减少的贡献率高达91.8%;因此,说明下垫面变化是造成嘉陵江流域径流量和输沙量变化的主要原因。 |
其他语种文摘
|
The Jialing River Basin is one of the important sources of runoff and sediment in the upper reaches of the Yangtze River Basin. Investigation on the mechanism of the influence of climate and underlying surface conditions on runoff and sediment discharge reveal the reason for the change of runoff and sediment discharge in Jialing River Basin in recent decades, therefore, analyzing the influence contribution rates from 2 factors of climate and underlying surface conditions on the changes of runoff and sediment has the important significance in the Jialing River Basin, and it also can be used as certain significant guidance to control the basin sediment variability of soil and water conservation work. [Methods] SWAT model was adopted to simulate the process of runoff and sediment in the Jialing River Basin since 1975, and was calibrated by processing the basic data (including land use, DEM, soil data and meteorological data) and using the sediment data of the hydrologic stations, furthermore the driving factors resulting in the changes of runoff and sediment as well as their contribution rates to the changes of runoff and sediment were analyzed by the method of model control variables. [Results] The study showed that: during the 23 years from 1988 to 2010, 1) the total runoff in Jialing River Basin was 3.59% less than the average runoff, and the total amount of sediment decreased by 5.14% and only resulted from the change of climate condition. The contribution rate of climate changes on the decrease of runoff was 23.81% and on the decrease of sediment was 8.2%. 2) Compared with the average total amount of runoff and sediment discharge, the total runoff in Jialing River Basin had been a decrease of 171.854 billion cubic meters and the sediment discharge had been a decrease of 1 462 million tons. The contribution rate of underlying surface changes on the decrease of runoff was 76.19% and on the decrease of sediment was 91.8%. [Conclusions] 1) The influence of weather change on runoff and sediment in Jialing River Basin is little. 2) The changes of runoff and sediment in Jialing River Basin are mainly caused by the changes of underlying surface conditions. Although this paper shows the underlying surface is the main reason on the change of runoff and sediment in Jialing River Basin, by the model precision it is infeasible to accurately distinguish the contribution rate of varied driving factors of underlying surface to the change processes of runoff and sediment. The underlying surface factors include soil and water conservation measures, land use change, reservoir hydropower station and the construction of large water conservancy facilities, and their influences on the runoff and sediment need further studying. |
来源
|
中国水土保持科学(中英文)
,2016,14(4):75-83 【核心库】
|
DOI
|
10.16843/j.sswc.2016.04.010
|
关键词
|
SWAT模型
;
水沙变化
;
气候变化
;
嘉陵江
|
地址
|
1.
四川省第三测绘工程院, 成都, 610500
2.
华中农业大学资源与环境学院, 武汉, 430070
3.
中国科学院水利部成都山地灾害与环境研究所, 成都, 610041
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1672-3007 |
学科
|
农业基础科学 |
基金
|
国家自然科学基金
;
中国科学院项目
;
国家水利部长江水利委员会项目
|
文献收藏号
|
CSCD:5781733
|
参考文献 共
13
共1页
|
1.
长江水利委员会长江流域水土保持监测中心站.
嘉陵江流域水土保持减沙效益研究报告,2006:1-64
|
被引
1
次
|
|
|
|
2.
陈显维. 嘉陵江流域水库群拦沙量估算及拦沙效应分析.
水文,1992(4):34
|
被引
4
次
|
|
|
|
3.
许炯心. 人类活动和降水变化对嘉陵江流域侵蚀产沙的影响.
地理科学,2006,26(4):432
|
被引
26
次
|
|
|
|
4.
丁文峰. 近50年来嘉陵江流域径流泥沙演变规律及驱动因素定量分析.
长江科学院院报,2008,25(3):23
|
被引
16
次
|
|
|
|
5.
刘惠英. 三峡库区香溪河流域降雨侵蚀力的时空分布特征.
中国水土保持科学,2015,13(5):1
|
被引
8
次
|
|
|
|
6.
张信宝. 长江上游干流和支流河流泥沙近期变化及其原因.
水利学报,2002,27(4):56
|
被引
71
次
|
|
|
|
7.
范建容. 嘉陵江中下游典型流域土壤侵蚀与泥沙输移遥感监测.
中国科学(E辑:科学技术),2003,33(S1):157
|
被引
3
次
|
|
|
|
8.
许全喜. 嘉陵江流域水沙变化特性及原因分析.
泥沙研究,2008(2):1
|
被引
26
次
|
|
|
|
9.
杨丽红. 最小二乘与分位数回归方法在河流水沙研究中的应用——以陕北延河流域为例.
中国水土保持科学,2014,12(5):45
|
被引
4
次
|
|
|
|
10.
Arnold J G. Large-area hydrologic modeling and assessment:Part I. Model development.
Journal of the American Water Resources Association,1998,34(1):73
|
被引
343
次
|
|
|
|
11.
郭军庭. 应用SWAT模型研究潮河流域土地利用和气候变化对径流的影响.
生态学报,2014,34(6):1559
|
被引
71
次
|
|
|
|
12.
韩博. 蒲河流域氮污染负荷模拟及时空分布.
中国水土保持科学,2013,11(2):90
|
被引
6
次
|
|
|
|
13.
郝芳华. 土地利用变化对产流和产沙的影响分析.
水土保持学报,2004,18(3):5
|
被引
86
次
|
|
|
|
|