1964年至2010年期间多哥-贝宁莫诺河流域土地利用/覆盖和水平衡组成部分的变化

Q2 Agricultural and Biological Sciences Geography, Environment, Sustainability Pub Date : 2023-01-18 DOI:10.24057/2071-9388-2021-098
D. K. Houteta, K. Atchonouglo, J. Adounkpe, B. Diwediga, Y. Lombo, K. Kpemoua, K. Agboka
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引用次数: 2

摘要

政府间气候变化专门委员会预测,亚热带地区更容易受到气候变化的负面影响。此外,对于CC来说,土地利用和土地覆盖(LULC)的变化和大坝建设,通常被忽视,在农业生产和社会生态平衡的水平衡成分(WBC)的时空分布中发挥着重要作用。本研究旨在分析和比较莫诺河流域Nangbéto大坝建设前(1964–1986)和大坝建设后(1988–2010)期间LULC和WBC的变化。为此,该研究主要使用从经验证的土壤和水评估工具中提取的WBC和MRB中1975–2000年的LULC数据,以探索其时间分布及其变化的联系。结果表明,月平均实际蒸散量、渗透量、产水量、地表径流、地下水和侧流分别占51%、17.5%、15.9%和9.4%;1964年至1986年间,分别占总水量平衡的5.7%和0.4%。1988年至2010年间,相同成分分别占51%、9.1%、20.4%、6.3%、10.6%和2.6%。这些WBC在1964年至1986年的年均期内对实际蒸散量(31.3%)、产水量(25.9%)、渗滤量(17.7%)、地下水(14.71%)、地表径流(9.94%)和侧向流(0.40%)的贡献。同时,在1988年至2010年期间,实际蒸散量、产水量、渗滤量、地下水、地表径流和侧向流的贡献分别为49.8%、19.9%、11.2%,分别为10.3%、6.1%和2.5%。结果表明,实际蒸散量、地表径流、渗滤量和产水量的峰值出现在9月,对应于8月最大降雨量后的一个月。然而,我们更详细的分析表明,与MRB规模的第一个模拟期相比,第二个模拟期的森林和稀树草原的显著减少和农田面积的增加导致实际蒸散量和横向流量的减少。这些发现表明,自然植被的可持续管理和保护对于MRB的水资源综合管理和保护至关重要。
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Changes In Land Use/ Cover And Water Balance Components During 1964–2010 Period In The Mono River Basin, Togo-Benin
The Intergovernmental Panel on Climate Change has predicted that sub-tropical regions are more vulnerable to climate change’s negative effects (CC). Additionally, to CC, land use and land cover (LULC) changes and dam construction, often neglected, play an important role in the spatial and temporal distribution of water balance components (WBC) for agricultural production and socio-ecological equilibrium. This study aimed to analyze and compare the changes in LULC and WBC for the period before Nangbéto dam construction (1964–1986) and the period after its construction (1988–2010) in the Mono River Basin (MRB). To this end, the study used mainly WBC extracted from the validated Soil and Water Assessment Tool and LULC data of 1975–2000 in the MRB to explore their temporal distributions and the link in their changes. The results showed that mean actual monthly evapotranspiration, percolation, water yield, surface runoff, groundwater, and lateral flow represent 51%, 17.5%, 15.9%, 9.4%; 5.7% and 0.4%, respectively, of total water balance between 1964 and 1986. The same components represented 51%, 9.1%, 20.4%, 6.3%, 10.6% and 2.6%, respectively, between 1988 and 2010. The contribution of these WBC in the mean-annual (1964–1986) period was for actual evapotranspiration (31.3%), water yield (25.9%), percolation (17.7%), groundwater (14.71%), surface runoff (9.94%) and lateral flow (0.40%). Meanwhile, between 1988 and 2010, the contribution of actual evapotranspiration, water yield, percolation, groundwater, surface runoff and lateral flow is 49.8%,19.9%, 11.2%, 10.3%, 6.1%, and 2.5%, respectively. The results showed that the peaks of the actual evapotranspiration, surface runoff, percolation and water yield appeared in September, corresponding to a month after the maximum rainfall in August. However, our more detailed analysis showed that a significant decrease in forest and savanna and an increase in croplands led to a decrease in actual evapotranspiration and lateral flow over the second simulation period compared to the first period of simulation over the MRB scale. These findings showed that sustainable management and conservation of natural vegetation are crucial for integrated water resource management and conservation in MRB.
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来源期刊
Geography, Environment, Sustainability
Geography, Environment, Sustainability Social Sciences-Geography, Planning and Development
CiteScore
2.50
自引率
0.00%
发文量
37
审稿时长
12 weeks
期刊介绍: Journal “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” is founded by the Faculty of Geography of Lomonosov Moscow State University, The Russian Geographical Society and by the Institute of Geography of RAS. It is the official journal of Russian Geographical Society, and a fully open access journal. Journal “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” publishes original, innovative, interdisciplinary and timely research letter articles and concise reviews on studies of the Earth and its environment scientific field. This goal covers a broad spectrum of scientific research areas (physical-, social-, economic-, cultural geography, environmental sciences and sustainable development) and also considers contemporary and widely used research methods, such as geoinformatics, cartography, remote sensing (including from space), geophysics, geochemistry, etc. “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” is the only original English-language journal in the field of geography and environmental sciences published in Russia. It is supposed to be an outlet from the Russian-speaking countries to Europe and an inlet from Europe to the Russian-speaking countries regarding environmental and Earth sciences, geography and sustainability. The main sections of the journal are the theory of geography and ecology, the theory of sustainable development, use of natural resources, natural resources assessment, global and regional changes of environment and climate, social-economical geography, ecological regional planning, sustainable regional development, applied aspects of geography and ecology, geoinformatics and ecological cartography, ecological problems of oil and gas sector, nature conservations, health and environment, and education for sustainable development. Articles are freely available to both subscribers and the wider public with permitted reuse.
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