摘要
根据漓江枯水期流量变化的特点,在基于栖息地模拟法的基础上利用河流二维模型,建立了历史实测最枯流量3.8 m^3·s^(-1)、枯水期标准流量45 m^3·s^(-1)和生态补水量60 m^3·s^(-1)三种不同流量下成年鲤有效栖息地的二维模型,评价其栖息地面积百分比与漓江枯水期不同流量的关系。结果表明枯水期漓江成年鲤的栖息地面积随着流量增加而增大并由河道中间逐渐向河两边移动,当流量增加到45 m^3·s^(-1)以后成年鲤栖息地面积的增长速度开始明显降低甚至是基本保持不变。分析了由于漓江流域河床坡度陡、流域面积小、雨量分配不圴、枯水期地表水向地下水排泄以及人为活动等引起枯水期栖息地面积发生变化的原因,为漓江枯水期补水和河流生物栖息地保护提供参考意义。
According to the characteristics of runoff changes in Lijiang River during the dry season,three two-dimensional models of adult Cyprinus carpio effective habitat areas were established based on different runoffs by using River 2D,which are the historical minimum flow of 3.8 m3·s-1,standard flow in the dry season of 45 m3·s-1 and ecological water supplement flow of 60 m3·s-1,respectively.Furthermore,evaluations of the relationship between the percentage of habitat area and different runoffs of Lijiang River were also presented.The results showed that the habitat areas of adult carp increased with the increase of runoff and moved gradually from the middle of the river to banks during the dry season.When the runoff was more than 45 m3·s-1,the growth rate of adult carp habitat areas began to decrease and even remained unchanged.Finally,the causes of the change of habitat areas in the dry season,such as the steep slope of the basin,the small watershed area,the uneven distribution of rainfall,the surface water discharge to the groundwater,and the man-made activities were analyzed in order to provide a reference for the replenishment in the dry season of Lijiang River and habitats protection.
作者
黄月群
蔡德所
杨培思
陈俊华
HUANG Yuequn;CAI Desuo;YANG Peisi;CHEN Junhua(College of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Guangxi Scientific Experiment Center of Mining,Metallurgy and Environment,Guilin University of Technology,Guilin 541004,China)
出处
《生态科学》
CSCD
2018年第2期147-152,共6页
Ecological Science
基金
鱼类个体行为监测技术研究及其在鱼道和水库工程中的应用(201405)
广西高等学校高水平创新团队及卓越学者计划项目(002401013001)
