The Impacts of Regional Rainfall and Upstream Effect on Runoff of Xiangjiang River of Guizhou

• 作者: Suo Hongmin Wang Lin Yang Dongfang Zhang Rong Zhu Sixi
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: Xiangjiang RIVER Yachi RIVER MONTHLY RUNOFF REOF analysis RAINFALL China
• 年，卷（期）: 2017,（2）
• 页码范围: 79-84
• 页数: 6页
• 分类号: P

摘要

Based on monthly runoff data of Xiangjiang River of Guizhou from June 2013 to June 2015 and monthly runoff data of Yachi River of Guizhou from April 2014 to May 2015, using REOF and multiple linear regression analysis, the effects of regional rainfall and monthly runoff of upstream river on monthly runoff of Xiangjiang River were studied. Seasonal temporal-spatial change of monthly runoff of Xiangjiang River and Yachi River mainly had two kinds of modalites. The first modality was artificial influence mode, which was absolutely main component of seasonal change of monthly runoff in Xiangjiang River and Yachi River, and peak appeared during August-October. Here, component of Yachi River was far larger than that of Xiangjiang River, and artificial control ability of monthly runoff in Xiangjiang River was far larger than Yachi River. The second modality was natural influence mode, and peak appeared in July. Xiangjiang River and Yachi River had similar natural influence component, and the component was only tiny part of seasonal change of monthly runoff in Xiangjiang River and Yachi River. Water gathering change of Xiangjiang River headstream showed by monthly runoff of Yachi River and the first mode of regional rainfall were main influence factors of monthly runoff of Xiangjiang River. Monthly runoff of Xiangjiang River, monthly runoff of Yachi River and the first mode of regional rainfall all had the same-phase seasonal change.