Generation, transport and retention of water and suspended sediments in large dryland catchments: Monitoring and integrated modelling of fluxes and connectivity phenomena

大型旱地流域水和悬浮沉积物的产生、运输和保留：通量和连通性现象的监测和综合建模

• 批准号: 160797836
• 负责人: Professor Dr.-Ing. Axel Bronstert
• 金额: --
• 依托单位: Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum (GFZ)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/160797836?language=en
• 关键词: Generation; transport; retention; water; suspended

Understanding connectivity in hydrological systems is important given the degree to which such connectivity has been impaired by human activities worldwide, e.g. by water abstraction and reservoir construction. Specifically for dryland regions, which host about one-third of the global population and are exposed to the hazard that available water resources fail to meet water demand, the assessment of water and sediment fluxes are a prerequisite for sustainable water and sediment management. Drylands often experience strong erosion in headwater catchments, resulting in reservoir sedimentation and a loss of retention volume which can lead to a significant reduction of water availability within few decades. This project will quantify and model runoff and suspended sediment transfer paths in dryland regions. Connectivity processes between water and sediment delivering, accepting and transporting compartments, including the analysis of transfer routes and storage capabilities, will be analysed for instrumented meso-scale catchments in Spain and Brazil. Extended multi-scale field monitoring, the quantification of leakiness and landscape fragmentation, the application of innovative sediment tracing techniques, and the identification of major sources, stores and fluxes of sediments through remotely sensed data will result in an enhanced process understanding of connectivity. An existing modelling framework for water and sediment transport, the WASA-SED model, will be extended to account for these phenomena at the intersections of hillslopes, rivers and reservoirs. Large-scale pilot parameterisations for parts of the Ésera Basin in Spain and the Upper Jaguaribe in Brazil will be conducted to evaluate scenarios on land and reservoir management. The expected results will improve the knowledge and modelling capability of connectivity processes of water and sediment fluxes in drylands at spatial scales relevant for water and land management.

了解水文系统的连通性十分重要，因为这种连通性在很大程度上受到世界各地人类活动的损害，例如取水和建造水库。干旱地区的人口约占全球人口的三分之一，面临着现有水资源无法满足用水需求的危险，对这些地区的水和沉积物通量进行评估是可持续水和沉积物管理的一个先决条件。干地经常遭受源头集水区的强烈侵蚀，导致水库沉积和蓄水量损失，这可能导致几十年内可用水量大幅减少。该项目将对旱地地区的径流和悬浮泥沙转移路径进行量化和建模。将对西班牙和巴西装有仪器的中尺度集水区的水和沉积物输送、接受和输送隔间之间的连通性过程进行分析，包括对转移路线和储存能力的分析。通过扩大多尺度实地监测、对渗漏和景观破碎化进行量化、应用创新的沉积物追踪技术以及通过遥感数据查明沉积物的主要来源、储存和流动，将能增进对连通性的过程了解。现有的水和沉积物输运模型框架WASA-SED模型将得到扩展，以考虑山坡、河流和水库交汇处的这些现象。将在西班牙的Esera盆地和巴西的Upper Jaguaribe部分地区进行大规模试点参数化，以评估土地和水库管理的设想方案。预期结果将提高对旱地水和沉积物通量在与水和土地管理相关的空间尺度上的连通性过程的认识和建模能力。

项目成果

Modelling spatio-temporal patterns of sediment yield and connectivity in a semi-arid catchment with the WASA-SED model

使用 WASA-SED 模型模拟半干旱流域沉积物产量和连通性的时空模式

• DOI: 10.1080/02626661003780409
• 期刊: Hydrological Sciences Journal
• 影响因子: 3.5
• 作者: P. H. A. Medeiros;A. Güntner;T. Francke;G. L. Mamede;J. C. d. Araújo
• 通讯作者: J. C. d. Araújo

Analysis of runoff, sediment dynamics and sediment yield of subcatchments in the highly erodible Isábena catchment, Central Pyrenees

比利牛斯山脉中部高度易侵蚀的伊萨贝纳流域的子流域径流、泥沙动力学和产沙量分析

• DOI: 10.1007/s11368-014-0990-5
• 发表时间: 1920
• 期刊: Journal of Soils and Sediments
• 影响因子: 3.6
• 作者: T. Francke;S. Werb;E. Sommerer;J. A. López-Tarazón
• 通讯作者: J. A. López-Tarazón

Analysis of channel transmission losses in a dryland river reach in north‐eastern Brazil using streamflow series, groundwater level series and multi‐temporal satellite data

利用径流系列、地下水位系列和多时相卫星数据分析巴西东北部旱地河段的河道传输损失

• DOI: 10.1002/hyp.9243
• 发表时间: 2013
• 期刊: Hydrological Processes
• 影响因子: 3.2
• 作者: A. C. Costa;S. Foerster;J. C. Araújo;A. Bronstert
• 通讯作者: A. Bronstert

Connectivity of sediment transport in a semiarid environment: a synthesis for the Upper Jaguaribe Basin, Brazil

半干旱环境中沉积物输送的连通性：巴西上雅瓜里贝盆地的综合

• DOI: 10.1007/s11368-014-0988-z
• 发表时间: 1948
• 期刊: Journal of Soils and Sediments
• 影响因子: 3.6
• 作者: P. H. A. Medeiros;J. C. d. Araújo;G. L. Mamede;B. Creutzfeldt;A. Güntner;A. Bronstert
• 通讯作者: A. Bronstert

Spectral fingerprinting: characterizing suspended sediment sources by the use of VNIR-SWIR spectral information

光谱指纹识别：利用 VNIR-SWIR 光谱信息表征悬浮沉积物来源

• DOI: 10.1007/s11368-014-0927-z
• 发表时间: 1981
• 期刊: Journal of Soils and Sediments
• 影响因子: 3.6
• 作者: A. Brosinsky;S. Foerster;K. Segl;J. A. López-Tarazón;G. Piqué;A. Bronstert
• 通讯作者: A. Bronstert