地理学报 ›› 2016, Vol. 71 ›› Issue (3): 448-458.doi: 10.11821/dlxb201603008
王跃峰(), 许有鹏(
), 张倩玉, 李广, 雷超桂, 杨柳, 韩龙飞, 邓晓军
收稿日期:
2015-08-04
修回日期:
2016-01-01
出版日期:
2016-03-25
发布日期:
2016-03-25
作者简介:
作者简介:王跃峰(1987-), 男, 山东临清人, 博士, 主要研究方向为流域水文与水资源.E-mail:
基金资助:
Yuefeng WANG(), Youpeng XU(
), Qianyu ZHANG, Guang LI, Chaogui LEI, Liu YANG, Longfei HAN, Xiaojun DENG
Received:
2015-08-04
Revised:
2016-01-01
Published:
2016-03-25
Online:
2016-03-25
Supported by:
摘要:
城镇化快速发展导致河网水系萎缩,连通性受阻,河网调蓄能力降低,加大了区域洪灾风险和洪涝损失.基于1960s,1980s,2010s的1:5万地形图水系及三个控制站的水位数据,选取河网密度(Rd),水面率(WP),盒维数(D),水位Hurst指数(H),分析了近50年来太湖流域武澄锡虞地区的水系演变与河网调蓄能力变化;并借助代表性单元流域概念,以水位Hurst指数来表征河网调蓄能力,从河网调蓄的物理机理出发,探讨了河网调蓄与河网结构参数的关系.结果表明:① 受快速城镇化影响,1960s-2010s武澄锡虞地区河网密度,水面率及盒维数分别下降了18.87%,24.59%,7.60%,且1980s至2010s各水系指标的衰减率均高于1960s-1980s;② 1960-2010年,研究区年均及汛期的水位Hurst指数呈下降趋势,其所反映的河网调蓄能力与该地区河网水系各指标变化同步,这表明城镇化引起的河流水系衰减导致河网调蓄能力发生明显下降,非汛期水位Hurst指数先增加后降低,表现出一定的不确定性;③ 基于REW概念与水位Hurst指数值,初步构建了河网结构参数与调蓄能力的关系式,并对关系式进行了验证,基本可行,可在一定程度上揭示城镇化下水系变化对河网调蓄能力的影响,从而为评价平原水网区河网调蓄能力提供了一种相对简便的方法.
王跃峰, 许有鹏, 张倩玉, 李广, 雷超桂, 杨柳, 韩龙飞, 邓晓军. 太湖平原区河网结构变化对调蓄能力的影响[J]. 地理学报, 2016, 71(3): 448-458.
Yuefeng WANG, Youpeng XU, Qianyu ZHANG, Guang LI, Chaogui LEI, Liu YANG, Longfei HAN, Xiaojun DENG. Influence of stream structure change on regulation capacity of river networks in Taihu Lake Basin[J]. Acta Geographica Sinica, 2016, 71(3): 448-458.
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