Towards understanding links between rural land management and the catchment flood hydrograph

Towards understanding links between rural land management and the catchment flood hydrograph
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了解农村土地管理与流域洪水过程线之间的联系

DOI:
10.1002/qj.2026
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发表时间:
2012
影响因子:
8.9
通讯作者:
Ewen J
Ewen J
中科院分区:
地球科学3区
文献类型:
--
作者:
Ewen J

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农村河流流域的土地管理和洪水过程线之间的因果关系的性质进行了调查。一个集水区可以用不同土地利用、土地管理和土壤的马赛克来表示。在镶嵌图中,因果关系随土地和渠道排水网络的物理特性、管理做法以及降雨和蒸发的时空变化而变化。英格兰西北部的Hodder河流域使用定制设计的半分布式降雨径流模型表示。一个伴随的,反向算法的分化,版本的模型,然后被用来找到在集水区出口的峰值流量的敏感性控制径流产生的模型参数。使用这种新的方法,土地管理的变化和对峰值流量的影响之间的联系进行了调查,分解的影响在空间上,给地图显示的影响,瓷砖的来源,瓷砖。该方法适用于霍德集水区,特别是在秋季和冬季的降雨事件。它的优点和缺点进行了讨论。皇家气象学会
The nature of causal links between land management in rural river catchments and the flood hydrograph is investigated. A catchment can be represented as a mosaic of tiles with different land use, land management, and soils. Over the mosaic, the causal links vary with the physical properties of the land and channel drainage network, and with the management practices and space–time variations in rainfall and evaporation. The river Hodder catchment in northwest England is represented using a custom‐designed semi‐distributed rainfall‐runoff model. An adjoint, reverse algorithmic differentiation, version of the model is then used to find the sensitivity of the peak flow rate at the catchment outlet to the model parameters controlling runoff generation. Using this novel approach, the links between changes in land management and the impact on the peak flow rate are investigated by decomposing the impact in space to give maps that show the sources of impact, tile by tile. The method works quite well for the Hodder catchment, especially for rainfall events in the autumn and winter. Its strengths and weaknesses are discussed. Copyright © 2012 Royal Meteorological Society
基于物理的模型在模拟径流对农村土地管理情景的响应中的作用
DOI: --
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Geris, J
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