摘要
针对碧流河水库入流消落区生态改善需求,提出了利用潜坝提高主河道和滩地潜水水位,进而改善滩地植被条件的治理技术,并通过对比潜坝建设前后滩地植被状态分析了潜坝对植被的影响。结果表明:潜坝建设后,研究区优势物种由中旱生植物向湿生植物转变,2020年6月和7月区域平均植被覆盖度较潜坝建设前的2019年同期分别增长8.23%和20.94%;潜坝对于水库入流消落区落干期滩地植被覆盖度的提高具有良好的促进作用,是水库入流消落区生态改善的有效工程措施。
Aiming at the ecological improvement needs of inflow-water-level-fluctuating zone(IWLFZ)of Biliuhe Reservoir,the treatment technology of using submerged dam to raise the phreatic water level of the main river and the beach land and then improve the beach vegetation conditions was proposed.By comparing the vegetation status on the beach land before and after the construction of the submerged dam,the influence of the submerged dam on the vegetation was analyzed.The results showed that after the construction of the submerged dam,the dominant species change from xerophytes to hygrophytes.In June and July 2020,the average vegetation coverage of the study area increased by 8.23% and 20.94% compared with the same period in 2019 before the construction of the submerged dam.The submerged dam can promote the vegetation coverage on beach land of IWLFZ during the dry period,and the submerged dam is an effective engineering measure to the ecological improvement of IWLFZ.
作者
许士国
苏广宇
谢楚依
朱晨莹
XU Shiguo;SU Guangyu;XIE Chuyi;ZHU Chenying(School of Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China;Water Conservancy and Electric Power Design Institute of Wuzhou,Guangxi Zhuang Autonomous Region,Wuzhou 543002,China;No.1 Institute of Geological Environment Investigation Institute,Bureau of Geology and Mineral Exploration and Development of Henan Province,Zhengzhou 471023,China)
出处
《水资源保护》
EI
CAS
CSCD
北大核心
2022年第5期26-31,共6页
Water Resources Protection
基金
国家重点研发计划(2016YFC0400903)
国家自然科学基金面上项目(51879031)。
关键词
入流消落区
生态改善
潜坝
植被
碧流河水库
inflow-water-level-fluctuating zone
ecological improvement
submerged dam
vegetation
Biliuhe Reservoir
