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Desiccation of Wetlands and Their Influence on the Regional Climate. Case Study: Ciénaga de Aguablanca, Cali, Colombia
Tropical Conservation Science ( IF 1.7 ) Pub Date : 2021-03-31 , DOI: 10.1177/19400829211007075
Camilo Ocampo-Marulanda 1 , Yesid Carvajal-Escobar 1 , Aceneth Perafán-Cabrera 2 , Lina María Restrepo-Jiménez 2
Affiliation  

The desiccation of wetlands is a process associated with the dynamics of urban growth and expansion of the agricultural frontier. This article aims to evaluate the influence of the desiccation of the Ciénaga de Aguablanca on regional climate. The periodization of the desiccation and urban growth of Cali was reconstructed under the theoretical contributions of environmental history. As complementary sources, maps, aerial photographs, and diagrams of the city were obtained from 1944 to 2020, with which the hydromorphological changes in the Ciénaga de Aguablanca were represented. Data from six hydroclimatological stations were statistically analyzed with Pettitt’s test, trend analysis, and Rclimdex. The results indicate a reduction of 99% in the area of the wetlands, from 19.2 km2 in 1944 to 0.2 km2 by 2020. Additionally, a break point was observed in 1970, preceded by the process of wetland desiccation and waterproofing of the eastern part of Cali, along with significant differences between temperature series inside and outside the urban perimeter. Another break point was detected in 1985 in the flow series, associated with the construction of the La Salvajina dam. Monthly rainfall showed a tendency to increase, but its temporal distribution was uneven, given that rainfall volume showed a tendency to increase over short times. Regional climate changes can occur at a much faster rate than global variations due to the anthropogenic actions of wetland intervention.



中文翻译:

湿地的干燥及其对区域气候的影响。案例研究:哥伦比亚卡利Ciénagade Aguablanca

湿地的干燥是一个与城市增长和农业边界扩张动态相关的过程。本文旨在评估阿瓜布兰卡城(Ciénagade Aguablanca)的干旱对区域气候的影响。在环境历史的理论贡献下,重新构造了卡利的干旱化和城市发展的周期。作为补充资源,从1944年到2020年获得了这座城市的地图,航拍照片和图表,这些照片代表了阿瓜布兰卡城的水文形态变化。使用Pettitt检验,趋势分析和Rclimdex对来自六个水文气候站的数据进行了统计分析。结果表明,湿地面积减少了99%,从1944年的19.2 km 2减少到0.2 km 2到2020年。此外,在1970年观察到一个转折点,随后是卡利东部的湿地干燥和防水过程,以及城市周边内部和外部的温度序列之间存在显着差异。1985年,在流量系列中发现了另一个断裂点,这与La Salvajina大坝的建设有关。考虑到降雨量在短时间内有增加的趋势,月降水量有增加的趋势,但其时间分布是不均匀的。由于湿地干预的人为作用,区域气候变化的发生速度可能比全球变化的发生速度快得多。

更新日期:2021-04-01
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