Spatiotemporal changes of soil erosion rate in the pre-and post-dam construction periods (1990-2018) determined through RUSLE and GIS: the case of the Kavak River Basin, East Thrace, Türkiye

IF 4.7 3区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Environment, Development and Sustainability Pub Date : 2024-09-09 DOI:10.1007/s10668-024-05381-z
Emre Ozsahin
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Abstract

In the last few decades, spatiotemporal changes in soil erosion rate have changed dramatically with the construction of dams, resulting in increased sedimentation in dam reservoirs and significant shoreline changes in deltas in rivers downstream. This article aims to investigate the effect of dam construction on the change of soil erosion rate through the RUSLE and GIS in the Kavak River Basin in Thrace Peninsula (Türkiye). The impact of the dam built in the source part of the river on soil erosion in the basin was analyzed by the conditions for characterizing the pre-and post-dam construction periods (1990–2018). The RUSLE soil erosion model and GIS were used to organize and evaluate the study data. Model estimation outputs were compared with the shoreline changes in the delta, SOC loss and dating of sediment deposits, and volume changes in the dam reservoir. Finally, the average soil loss (ASL) in the Kavak River Basin was demonstrated to be 5.31 t haˉ¹ yrˉ¹ and 4.68 t haˉ¹ yrˉ¹ in 1990 and 2018, respectively. In the same period, it was determined that there was a -80 m shoreline regression in the delta. According to the study’s results, the erosion phenomenon may lead to a decrease in the economic life of the dam reservoir and a narrowing in productive agricultural areas in the delta.

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通过 RUSLE 和 GIS 确定建坝前后(1990-2018 年)水土流失率的时空变化:以土耳其东色雷斯卡瓦克河流域为例
在过去的几十年中,随着大坝的修建,土壤侵蚀率的时空变化发生了巨大变化,导致大坝水库中的沉积物增加,下游河流三角洲的海岸线也发生了显著变化。本文旨在通过 RUSLE 和 GIS 研究色雷斯半岛(土耳其)卡瓦克河流域大坝建设对土壤侵蚀率变化的影响。通过分析建坝前后两个时期(1990-2018 年)的特征条件,分析了在河流源头部分修建的大坝对流域土壤侵蚀的影响。采用 RUSLE 水土流失模型和地理信息系统来组织和评估研究数据。将模型估算输出与三角洲海岸线变化、沉积物的 SOC 损失和年代测定以及大坝水库的体积变化进行了比较。最后证明,1990 年和 2018 年,卡瓦克河流域的平均土壤流失量(ASL)分别为 5.31 吨/公顷和 4.68 吨/公顷。同期,三角洲的海岸线倒退了-80 米。根据研究结果,水土流失现象可能会导致大坝水库的经济寿命缩短,三角洲的农业生产面积缩小。
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来源期刊
Environment, Development and Sustainability
Environment, Development and Sustainability Economics, Econometrics and Finance-Economics and Econometrics
CiteScore
10.20
自引率
6.10%
发文量
754
期刊介绍: Environment, Development and Sustainability is an international and multidisciplinary journal covering all aspects of the environmental impacts of socio-economic development. It is also concerned with the complex interactions which occur between development and environment, and its purpose is to seek ways and means for achieving sustainability in all human activities aimed at such development. The subject matter of the journal includes the following and related issues: -mutual interactions among society, development and environment, and their implications for sustainable development -technical, economic, ethical and philosophical aspects of sustainable development -global sustainability - the obstacles and ways in which they could be overcome -local and regional sustainability initiatives, their practical implementation, and relevance for use in a wider context -development and application of indicators of sustainability -development, verification, implementation and monitoring of policies for sustainable development -sustainable use of land, water, energy and biological resources in development -impacts of agriculture and forestry activities on soil and aquatic ecosystems and biodiversity -effects of energy use and global climate change on development and sustainability -impacts of population growth and human activities on food and other essential resources for development -role of national and international agencies, and of international aid and trade arrangements in sustainable development -social and cultural contexts of sustainable development -role of education and public awareness in sustainable development -role of political and economic instruments in sustainable development -shortcomings of sustainable development and its alternatives.
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