Mapping the spatial distribution of small reservoirs in the White Volta Sub-basin of Ghana

Ghansah, Benjamin; Forkuo, Eric Kwabena; Osei, Emmanuel Frimpong; Appoh, Richard; Asare, Mensah Yaw; Kluste, Nana Ama Browne

doi:10.1016/j.rsase.2017.12.003

Cited by 10 publications

(10 citation statements)

References 21 publications

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“…The land suitability is evaluated in a broader sense using the qualitative methods and various technical procedures [31,32]. Some of them are statistical, parametric, and arithmetic procedures, and the variations lie in their technical applicability [33,34].…”

Section: Authors Methods Employed For Analysismentioning

confidence: 99%

Geological Resource Planning and Environmental Impact Assessments Based on GIS

Xie

Wang

et al. 2022

Sustainability

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The purpose is to study the geological resource planning and environmental impact assessments based on the geographic information system (GIS). In this study, the land resources of Yinan County in southeastern Shandong Province are taken as the research object. Based on a GIS, the current situation of land resource development is analyzed, land resource planning is carried out, and environmental impact mitigation measures are evaluated and analyzed through the environmental impact. The results obtained depict the distribution of cultivated land; the development area is 1617.31 hm2, of which 577.32 hm2 is cultivated land, 30.43 hm2 is garden land, 399.66 hm2 is forest land, 40.87 hm2 is urban and rural construction land, 10.11 hm2 is traffic water conservancy and other construction land, and 558.92 hm2 is natural reserve land. In the layout of the construction land, the development area is 841.94 hm2, of which 175.44 hm2 is cultivated land, 47.88 hm2 is garden land, 100.54 hm2 is forest land, 0.1 hm2 is other agricultural land, 90.45 hm2 is urban and rural construction land, 3.66 hm2 is traffic water conservancy and other construction land, 11.33 hm2 is water area, and 412.54 hm2 is natural reserve land. The impact of the implementation of planning on most indicators is positive and beneficial, while the impact of negative indicators is relatively small. It is revealed that the implementation of the plan has little impact on most of the ecological environment indicators. Construction and cultivated land development further improve the level of urbanization. In the process of planning implementation, corresponding measures should be taken to slow down or eliminate the negative development of the ecological environment.

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Section: Authors Methods Employed For Analysismentioning

confidence: 99%

Geological Resource Planning and Environmental Impact Assessments Based on GIS

Xie

Wang

et al. 2022

Sustainability

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“…Within these procedures, arithmetical or parametric methods consisting of statistical analysis are applied [55,56]. The difference between the two approaches lies in the technical procedures adopted for land evaluation [57,58]. In the context of promoting NUS in the marginal cropping system, LSA methods selected to delineate homogenous zones should accommodate minimum multidisciplinary data to map land units with homogenous zones.…”

Section: Traditional Land Suitability Methodsmentioning

confidence: 99%

“…Across most of the identified traditional methods, socio-economic data is minimal, yet socio-economic data is critical when conducting any assessments for crops such as NUS. Also, Hopkins [58] pointed out limitations associated with using ordinal, linear combination methods, which can be addressed using a combination of non-linear methods. Manna et al [46] concluded that changing land use and management practices must be based on land evaluation results on suitability and vulnerability, thus transcending the reductionistic approaches of qualitative and quantitative methods.…”

Section: Traditional Land Suitability Methodsmentioning

confidence: 99%

“…The description and importance of each factor are beyond the scope of this review; however, for a detailed description, readers may refer to Akpoti et al [19] The mapping and the accuracy of land-use systems and their associated characteristics depend on the scale and availability of data at the accepted resolution. The process of evaluating the suitability for a specific purpose requires a comprehensive analysis of natural factors and the socio-economic factors which influence the land [58,126]. The elements used can be divided into high and lower factors based on experts' opinion weights [140].…”

Section: Factors Considered In Crop Suitability Mappingmentioning

confidence: 99%

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Evaluation of Land Suitability Methods with Reference to Neglected and Underutilised Crop Species: A Scoping Review

Mugiyo

Chimonyo

Sibanda

et al. 2021

Land

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In agriculture, land use and land classification address questions such as “where”, “why” and “when” a particular crop is grown within a particular agroecology. To date, there are several land suitability analysis (LSA) methods, but there is no consensus on the best method for crop suitability analysis. We conducted a scoping review to evaluate methodological strategies for LSA. Secondary to this, we assessed which of these would be suitable for neglected and underutilised crop species (NUS). The review classified LSA methods reported in articles as traditional (26.6%) and modern (63.4%). Modern approaches, including multi-criteria decision-making (MCDM) methods such as analytical hierarchy process (AHP) (14.9%) and fuzzy methods (12.9%); crop simulation models (9.9%) and machine learning related methods (25.7%) are gaining popularity over traditional methods. The MCDM methods, namely AHP and fuzzy, are commonly applied to LSA while crop models and machine learning related methods are gaining popularity. A total of 67 parameters from climatic, hydrology, soil, socio-economic and landscape properties are essential in LSA. Unavailability and the inclusion of categorical datasets from social sources is a challenge. Using big data and Internet of Things (IoT) improves the accuracy and reliability of LSA methods. The review expects to provide researchers and decision-makers with the most robust methods and standard parameters required in developing LSA for NUS. Qualitative and quantitative approaches must be integrated into unique hybrid land evaluation systems to improve LSA.

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“…There are smaller impoundments scattered across the country, especially in northern Ghana. Ghansah et al (2018) studied the small impoundments in the White Volta basin based on remote sensing techniques and ground truthing. They estimated that there are ∼254 small reservoirs of surface areas Yeleliere et al (2018).…”

Section: Reservoirsmentioning

confidence: 99%

A review of the water resources of Ghana in a changing climate and anthropogenic stresses

Agodzo

Bessah²,

Nyatuame³

2023

Front. Water

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An extensive narrative review approach is adopted to present existing information on the consumptive and non-consumptive uses and their related issues, such as floods and droughts, climate and the environment in Ghana. Total annual rainfall in the country ranges between 800 mm/y (south-east coat) and 2,000 mm/y (south-west coast) with a bimodal and mono-modal patterns in the south and north, respectively. Annual total runoff from the 3 river systems (the Volta river system, the South-western river system and the Coastal river system) in Ghana is estimated at 40 billion m3 out of about 53 billion renewable freshwater resources. Groundwater yields ranges from 6 m3/h in the Volta basin sedimentary formations to 180 m3/h in the limestone formations. It is estimated that the total water withdrawal as a percentage of total renewable water resources is about 2%. At an average per capita consumption of water of 50 l/p/d, estimated daily water demand for the 2021 population of 31 million people stands at about 566 million m3/y. Current water supply systems are overstretched and it is further estimated that about US $ 240 million is required per year as capital expenditure in urban and rural water supply. Moreover, climate change is projected to increase the scarcity of water in future. Wastewater generated through domestic and industrial uses including storm water in urban Ghana is estimated at about 760 million m3/y. Ghana's irrigation potential to reduce climate change impact on agriculture is put at between 0.36 and 2.9 million ha, accounting for about 66.4% of the consumptive water withdrawal. Estimated water demand for cattle, sheep and goats in 2010 was put at about 22 million m3/y. Other services obtained from surface water are the provision of fish (the Volta Lake is estimated to contributes to 16% of total catch in Ghana); hydropower generation accounting for about 40% of total power installed capacity (Akosombo = 1,020 MW, Kpong = 160 MW, and Bui = 404 MW); water transportation (notably on the Volta Lake); tourist attractions [are 550 km Ghana's shoreline that has about 90 lagoons, the Volta Lake, the lower Volta (e.g., Sogakope, Ada) and some other inland waters like Lake Bosumtwi] and wetlands (recognized by RAMSAR convention of 1971) In the legal context, water governance issues are handled by various institutions created by Acts of Parliament.

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Mapping the spatial distribution of small reservoirs in the White Volta Sub-basin of Ghana

Cited by 10 publications

References 21 publications

Geological Resource Planning and Environmental Impact Assessments Based on GIS

Geological Resource Planning and Environmental Impact Assessments Based on GIS

Evaluation of Land Suitability Methods with Reference to Neglected and Underutilised Crop Species: A Scoping Review

A review of the water resources of Ghana in a changing climate and anthropogenic stresses

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