Land use assessment of Jeneberang watershed using hydrology and water availability analysis

In seaweed Eucheuma cottonii cultures, a water carrying capacity is an important factor to optimize the seaweed culture. Carrying capacity can be determined by an ecological footprint production (EFp) analysis. This research was conducted in May 2015 (1st transitional season) and September 2015 (2nd transitional season) in Luwu and Palopo distircts, South Sulawesi. Map and land use were analyzed using GIS (Geographic Information Systems). The result showed that the ecological foot-print production (EFP) in Luwu waters was 67.88 ton/capita/year or equivalent to 235,823.93 tons/ year. However, based on the analysis of the water availability for seaweed was 59,781.79 hectares, it can produce seaweed (biocapacity) for 1,437,779.60 tons/year and the number of farmers that allows for use the waters is 21,432 capita. The ecological footprint production (EFp) in Palopo waters is 3.08 ton/capita/year, or equivalent to 4,589.99 tons/year. Water availability analysis is 1,771. 41 hectares are able to produce seaweed (biocapacity) for 18,287.46 ton/year and the number of far-mers that allows for use the waters is 635 farmers capita. The results comparison between biocapa-ci-ty and ecological footprint, ecological status for Luwu and Palopo waters are still in sustainable use.

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WATERS CARRYING CAPACITY FOR DEVELOPMENT OF SEAWEED CULTURE OF Eucheuma cottonii IN LUWU AND PALOPO DISTRICTS, BONE BAY, SOUTH SULAWESI

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i2.15802 ◽

2017 ◽

Vol 8 (2) ◽

pp. 469

Author(s):

. Waluyo ◽

. Yonvitner ◽

Etty Riani ◽

Taslim Arifin

Keyword(s):

Land Use ◽

Carrying Capacity ◽

Water Availability ◽

Ecological Footprint ◽

Sustainable Use ◽

Ecological Status ◽

Availability Analysis ◽

South Sulawesi ◽

Eucheuma Cottonii ◽

Seaweed Culture

In seaweed Eucheuma cottonii cultures, a water carrying capacity is an important factor to optimize the seaweed culture. Carrying capacity can be determined by an ecological footprint production (EFp) analysis. This research was conducted in May 2015 (1st transitional season) and September 2015 (2nd transitional season) in Luwu and Palopo distircts, South Sulawesi. Map and land use were analyzed using GIS (Geographic Information Systems). The result showed that the ecological foot-print production (EFP) in Luwu waters was 67.88 ton/capita/year or equivalent to 235,823.93 tons/ year. However, based on the analysis of the water availability for seaweed was 59,781.79 hectares, it can produce seaweed (biocapacity) for 1,437,779.60 tons/year and the number of farmers that allows for use the waters is 21,432 capita. The ecological footprint production (EFp) in Palopo waters is 3.08 ton/capita/year, or equivalent to 4,589.99 tons/year. Water availability analysis is 1,771. 41 hectares are able to produce seaweed (biocapacity) for 18,287.46 ton/year and the number of far-mers that allows for use the waters is 635 farmers capita. The results comparison between biocapa-ci-ty and ecological footprint, ecological status for Luwu and Palopo waters are still in sustainable use.

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System Dynamic Approach to Support Decision in Maintaining Water Availability (Case Study in Aek Silang Sub-Watershed, the Lake of Toba)

Forum Geografi ◽

10.23917/forgeo.v30i2.2719 ◽

2016 ◽

Vol 30 (2) ◽

pp. 184 ◽

Cited By ~ 1

Author(s):

Irwan Valentinus Sihotang ◽

S Sudarmadji ◽

Ig.L. Setyawan Purnama ◽

Muhammad Baiquni

Keyword(s):

Land Use ◽

Land Use Change ◽

Population Growth ◽

Water Availability ◽

Dynamic Modelling ◽

Actual Condition ◽

Hydrological Process ◽

Availability Analysis ◽

Rainfall Change

Water availability is immensely affected by the correlation among land use change, rainfall change, and population growth. One of analysis tools to discover how the correlation goes on in a hydrological process is by dynamic modelling approaching. The dynamic modelling result can be used for a substructure in decisions making as supports to maintain water availability for fulfilling domestic needs, agriculture, and Micro-Hydro Power (MHP). The aims of this study are to evaluate water availability as a long-term impact on land use change, rainfall change, and population growth with dynamic modelling and as a scenario which is required as basic information to make decisions in maintaining water availability. Analysis method which is applied in this study is dynamic modelling to long term evaluate water availability and validate using Mean Average Percentage Error method (MAPE). The analysis showed that the combination of rainfall of 2312.09 mm/yr, rainfall intensity of 0.340 mm/h, population growth rate of 7.23%, declined forest area of 1.513 ha/yr, declined shrub/unproductive land of 318.113 ha/yr, increased agricultural land of 7.627 ha/yr, and increased settlement area of 0.473 ha/yr, yielded the estimation of the fail in sustaining water sources in 2090 or the next 79 years from 2011 since the water deficit has reached approximately 3,249,881.02 m3. The value of validation modelling with MAPE method is 8.90, it is a dynamic modelling which is managed nearly the same with actual condition.

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Afforestation of Degraded Croplands as a Water-Saving Option in Irrigated Region of the Aral Sea Basin

Water ◽

10.3390/w13101433 ◽

2021 ◽

Vol 13 (10) ◽

pp. 1433

Author(s):

Navneet Kumar ◽

Asia Khamzina ◽

Patrick Knöfel ◽

John P. A. Lamers ◽

Bernhard Tischbein

Keyword(s):

Land Use ◽

Water Balance ◽

Water Supply ◽

Water Availability ◽

Irrigation Water ◽

Water Saving ◽

Aral Sea ◽

Water Balance Components ◽

Study Region ◽

Trade Offs

Climate change is likely to decrease surface water availability in Central Asia, thereby necessitating land use adaptations in irrigated regions. The introduction of trees to marginally productive croplands with shallow groundwater was suggested for irrigation water-saving and improving the land’s productivity. Considering the possible trade-offs with water availability in large-scale afforestation, our study predicted the impacts on water balance components in the lower reaches of the Amudarya River to facilitate afforestation planning using the Soil and Water Assessment Tool (SWAT). The land-use scenarios used for modeling analysis considered the afforestation of 62% and 100% of marginally productive croplands under average and low irrigation water supply identified from historical land-use maps. The results indicate a dramatic decrease in the examined water balance components in all afforestation scenarios based largely on the reduced irrigation demand of trees compared to the main crops. Specifically, replacing current crops (mostly cotton) with trees on all marginal land (approximately 663 km2) in the study region with an average water availability would save 1037 mln m3 of gross irrigation input within the study region and lower the annual drainage discharge by 504 mln m3. These effects have a considerable potential to support irrigation water management and enhance drainage functions in adapting to future water supply limitations.

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Risk Assessment of Future Climate and Land Use/Land Cover Change Impacts on Water Resources

Hydrology ◽

10.3390/hydrology8010038 ◽

2021 ◽

Vol 8 (1) ◽

pp. 38

Author(s):

Nick Martin

Keyword(s):

Risk Assessment ◽

Land Use ◽

Water Resources ◽

Land Cover ◽

Water Balance ◽

Water Availability ◽

Reference Conditions ◽

Weather Generator ◽

Future Climate ◽

Lulc Change

Climate and land use and land cover (LULC) changes will impact watershed-scale water resources. These systemic alterations will have interacting influences on water availability. A probabilistic risk assessment (PRA) framework for water resource impact analysis from future systemic change is described and implemented to examine combined climate and LULC change impacts from 2011–2100 for a study site in west-central Texas. Internally, the PRA framework provides probabilistic simulation of reference and future conditions using weather generator and water balance models in series—one weather generator and water balance model for reference and one of each for future conditions. To quantify future conditions uncertainty, framework results are the magnitude of change in water availability, from the comparison of simulated reference and future conditions, and likelihoods for each change. Inherent advantages of the framework formulation for analyzing future risk are the explicit incorporation of reference conditions to avoid additional scenario-based analysis of reference conditions and climate change emissions scenarios. In the case study application, an increase in impervious area from economic development is the LULC change; it generates a 1.1 times increase in average water availability, relative to future climate trends, from increased runoff and decreased transpiration.

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Hydrological regime, water availability and land use/land cover change impact on the water balance in a large agriculture basin in the Southern Brazilian Amazon

Journal of South American Earth Sciences ◽

10.1016/j.jsames.2021.103224 ◽

2021 ◽

Vol 108 ◽

pp. 103224

Author(s):

Tárcio Rocha Lopes ◽

Cornélio Alberto Zolin ◽

Rafael Mingoti ◽

Laurimar Gonçalves Vendrusculo ◽

Frederico Terra de Almeida ◽

...

Keyword(s):

Land Use ◽

Land Cover ◽

Water Balance ◽

Land Cover Change ◽

Water Availability ◽

Hydrological Regime ◽

Brazilian Amazon ◽

Land Use Land Cover ◽

Change Impact

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Groundwater Recharges Technology for Water Resource Management: A Case Study

10.5772/intechopen.93946 ◽

2020 ◽

Author(s):

Jatoth Veeranna ◽

Pawan Jeet

Keyword(s):

Land Use ◽

Groundwater Recharge ◽

Water Availability ◽

Water Resource Management ◽

Land Use Land Cover ◽

Indirect Methods ◽

Groundwater Availability ◽

Severe Water Deficit ◽

Direct And Indirect Methods

The irregularity in monsoon has severely affected the water availability at surface and sub-surface systems. Diminishing surface and sub-surface availability has not only decreased the water availability, but it additionally affected the ecosystem and increased disastrous situations like floods and droughts, resulting problems of stress on groundwater recharge. Groundwater recharge is a technique by which infiltrated water passes through the unsaturated region of groundwater and joins the water table. It is based upon soil type, land use land cover, geomorphology, geophysical and climate (viz. rainfall, temperature, humidity etc.) characteristics of a region. Over the years, due to variations in weather pattern and overexploitation of aquifers groundwater recharge has decreased and groundwater level has reduced in the most parts of the country. This has led to severe water deficit problems in several parts of the country. This can be solved by different direct and indirect methods of groundwater recharge technology. This technology can reduce the wastage of water and enhance groundwater availability for uses in different sector like irrigation, domestic and industrial uses.

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Investigation of impacts of land use/land cover change on water availability of Tons River Basin, Madhya Pradesh, India

Modeling Earth Systems and Environment ◽

10.1007/s40808-018-0425-1 ◽

2018 ◽

Vol 4 (1) ◽

pp. 295-310 ◽

Cited By ~ 19

Author(s):

Nirmal Kumar ◽

Sudhir Kumar Singh ◽

Vikram Gaurav Singh ◽

Bloodless Dzwairo

Keyword(s):

Land Use ◽

Land Cover ◽

Land Cover Change ◽

River Basin ◽

Water Availability ◽

Madhya Pradesh ◽

Land Use Land Cover ◽

Tons River Basin

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Aerial and surface rivers: downwind impacts on water availability from land use changes in Amazonia

Hydrology and Earth System Sciences ◽

10.5194/hess-22-911-2018 ◽

2018 ◽

Vol 22 (1) ◽

pp. 911-927 ◽

Cited By ~ 10

Author(s):

Wei Weng ◽

Matthias K. B. Luedeke ◽

Delphine C. Zemp ◽

Tobia Lakes ◽

Juergen P. Kropp

Keyword(s):

Land Use ◽

Land Use Change ◽

Water Availability ◽

Hydrological Cycle ◽

Land Use Changes ◽

Rainfall Runoff ◽

Runoff Changes ◽

Current Water ◽

Spatially Varying ◽

Land Water

Abstract. The abundant evapotranspiration provided by the Amazon forests is an important component of the hydrological cycle, both regionally and globally. Since the last century, deforestation and expanding agricultural activities have been changing the ecosystem and its provision of moisture to the atmosphere. However, it remains uncertain how the ongoing land use change will influence rainfall, runoff, and water availability as findings from previous studies differ. Using moisture tracking experiments based on observational data, we provide a spatially detailed analysis recognizing potential teleconnection between source and sink regions of atmospheric moisture. We apply land use scenarios in upwind moisture sources and quantify the corresponding rainfall and runoff changes in downwind moisture sinks. We find spatially varying responses of water regimes to land use changes, which may explain the diverse results from previous studies. Parts of the Peruvian Amazon and western Bolivia are identified as the sink areas most sensitive to land use change in the Amazon and we highlight the current water stress by Amazonian land use change on these areas in terms of the water availability. Furthermore, we also identify the influential source areas where land use change may considerably reduce a given target sink's water reception (from our example of the Ucayali River basin outlet, rainfall by 5–12 % and runoff by 19–50 % according to scenarios). Sensitive sinks and influential sources are therefore suggested as hotspots for achieving sustainable land–water management.

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