scholarly journals Penentuan Harga Air Tanah untuk Irigasi Berkelanjutan di Kabupaten Jembrana

2017 ◽  
pp. 606
Author(s):  
IDA BAGUS MADE WIRAWAN ◽  
I MADE SUDARMA ◽  
I WAYAN BUDIASA
Keyword(s):  
Water Use ◽  
Irrigated Agriculture ◽  
Total Cost ◽  
Agriculture Sector ◽  
Quantitative Calculation ◽  
Sustainable Water Use ◽  
Sustainable Value ◽  
Sustainable Irrigation ◽  
Total Life

Determination of Groundwater Prices for Sustainable Irrigation in JembranaRegency Subak Babakan Yehkuning is relatively new in obtaining Groundwater IrrigationNetwork, with the code YKN-127 in 2014. This study aims to determine the costcomponents and water prices that reflect the value of water use in a sustainablemanner. The method used in this research is quantitative calculation. The total waterdischarge from YKN-127 for three planting seasons in September 2015 until August2016 consecutively was 83,647.01 m3. This amount was derived from the total life ofthe pump for 2,733 hours, with a discharge 8.5 liters/second. The commoditiescultivated in three planting seasons were rice for two times and secondary crop (cornand soybean). Since the availability of ground water has a limited amount, it isimportant to note that the amount of water use should be less than the availabilities.The concept of sustainable value in the use of water is consisted of the total cost ofsupply, opportunity costs, and externalities costs. The results showed that the waterprice reflecting the sustainable water use value for irrigation at YKN-127 was Rp3,933.91/m3, which consisted of a full supply cost 65.9% (Rp 2,592.42/m3), anopportunity cost 27.9% (Rp 1,099.43/m3), and depletion premium 6.2% (Rp242.06/m3). This result is almost three times the operational and maintenance coststhat farmers usually pay for Rp 1,633.99/m3. This price describes the value that mustbe paid as an effort to maintain the development of irrigated agriculture sector andground water resources in order to remain sustainable in Jembrana, Bali Province.

How would irrigation enhance the global BECCS potential in view of sustainable water use?

2021 ◽  
Author(s):  
Zhipin Ai ◽  
Naota Hanasaki
Keyword(s):  
Water Use ◽  
Carbon Capture ◽  
Critical Role ◽  
Carbon Capture And Storage ◽  
Water Withdrawal ◽  
Water Usage ◽  
Sustainable Water Use ◽  
Additional Water ◽  
Sustainable Irrigation ◽  
And Storage

<p>Bioenergy with carbon capture and storage (BECCS) plays a critical role in many stringent scenarios targeting the 2°C goal. Although irrigation is considered a promising way to enhance BECCS potential while reducing the land requirement, it is still unknown where and to what extent it can enhance the global BECCS potential in view of sustainable water use. Based on integrated hydrological simulations, we found that sustainable irrigation without intervention in water usage for other sectors and refrain from exploiting nonrenewable water sources enhanced BECCS potential by only 5–6% (much smaller than 60–71% for unlimited irrigation) above the rainfed potential by the end of this century. Nonetheless, it adds limited additional water withdrawal (166–298 km<sup>3</sup> yr<sup>-1</sup>, corresponding to only 4–7% of the current total withdrawal) compared to that with unlimited irrigation (1392–3929 km<sup>3</sup> yr<sup>-1</sup>, corresponding to 35–98% of the current total withdrawal).</p>

scholarly journals An economic case for drainage for sustainable irrigation: Case studies in the lower Vaal and Riet catchments

2014 ◽  
Vol 10 (4) ◽  
pp. 470-481
Author(s):  
RJ Armour ◽  
MF Viljoen
Keyword(s):  
Direct Costs ◽  
Status Quo ◽  
Arid Area ◽  
Irrigated Agriculture ◽  
Dynamic Interactions ◽  
Total Cost ◽  
Financial Costs ◽  
Short Period ◽  
Potential Benefits ◽  
Sustainable Irrigation

Where evaporation exceeds precipitation salinisation is inevitable. This paper presents a multidisciplinary framework of the dynamic interactions between the hydrology, bio-physical and economics of irrigated agriculture in a semi arid area. Status quo drainage and cropping situations are compared to a scenario of increased drainage and leaching and subsequent higher value crops. Stochastically generated hydrology data fitted to a salinisation:yield production function is inputted in a crop enterprise budget (CEB) simulation model.Results show losses due to salinisation of up to R6 962/ha, which exceed the direct costs of installing drainage to control salinisation. Although feasible, farmers at this stage of degradation often do not have the financial ability to repay the loans. Where losses do not exceed the financial costs of drainage, soils are further degrading, higher value crops cannot be planted and potential benefits are lost to society, motivating a green box grant. A macro-economic analysis reveals that the potential benefits to society of drainage can repay the total cost of all necessary drainage in a short period of time. 

scholarly journals Analisis Penetapan Harga Air di Subak Dangin Yeh Desa Giri Emas, Kecamatan Sawan, Kabupaten Buleleng

2019 ◽  
pp. 125
Author(s):  
KADEK YARDI MAHADIKARA ◽  
I MADE SUDARMA ◽  
A.A. AYU WULANDIRA SAWITRI DJELANTIK
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Simple Random Sampling ◽  
Opportunity Costs ◽  
Quantitative Calculation ◽  
Sustainable Water Use ◽  
Library Research ◽  
Groundwater Irrigation ◽  
Planting Season

Analysis of the Determination of Water Prices in Subak Dangin Yeh Giri EmasVillage, Sawan District, Buleleng RegencySubak Dangin Yeh is one of the subaks which describes the decrease in the availabilityof surface water. The application of conventional rice planting systems along with thedecreasing availability of water causes the use of water to be effective and efficient.Therefore this research becomes important to do. This research was conducted fromJanuary to April 2018 with the aim to find out the subak fees charged to farmers, thevalue of water that farmers use in achieving maximum chargeprofits and water pricesthat reflect the value of sustainable water use. The scope of this research is thedetermination of the water price used by farmers with quantitative calculation methods.The data were obtained through library research, direct observation, and in-depthinterviews. The population of this study was all subak members with a sample of 50respondents and determined by the Simple Random Sampling method. Subak feescharged to farmers amounting to Rp.760,000.00 / land / year. Based on VMP analysis,the value of water used by farmers in achieving maximum profits was Rp. 379,932.43 /ha / planting season. The price of water that reflects the value of sustainable water usefor groundwater irrigation was Rp.4,693.64 / m3 which consists of a full supply cost ofRp. 160.92 /m3, opportunity costs of Rp. 4,199.14/ m3, and a depletion premium ofRp.333,59 / m3. This price must be paid by farmers in an effort to maintain waterresources to remain sustainable in the future.

scholarly journals Agro-ecological landuse transformation in oasis systems of Al Jabal Al Akhdar, northern Oman

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andreas Buerkert ◽  
Bryan Adam Dix ◽  
Mohamed Nasser Al Rawahi ◽  
Eva Schlecht
Keyword(s):  
Water Use ◽  
Urban Areas ◽  
Satellite Image ◽  
Treated Wastewater ◽  
Irrigated Agriculture ◽  
Al Jabal Al Akhdar ◽  
Time Series Approach ◽  
Use Efficiency ◽  
Ground Truthing ◽  
Satellite Image Analysis

AbstractThe millenia-old oasis systems in the Western Hajar Mountains of Northern Oman have received widespread attention as models of sustainable irrigated agriculture in hyperarid Arabia. Given Oman’s rampant urbanization, growing scarcity of water and skilled labour, we quantified chances in water use, land use, and land cover between 2007 and 2018 using a rare time-series approach of detailed GIS-based crop mapping. Results from satellite image analysis and comprehensive ground truthing showed that urban areas grew from 206 ha in 2009 to 230 ha in 2014 and 252 ha in 2018. Throughout this decade, irrigated areas in backyards and front-house gardens of the town, planted largely to tree crops and vegetables, increased from 13.5 to 23.3 ha. Between 2007 and 2018 the actively used area of the studied oasis systems declined by 2.0% and the share of perennial crops without underplanting by 5.1%, while land under agroforestry increased by 2.1% and fallow land by 3.5%. Rising water demand of the sprawling town Sayh Qatanah led to terraces of Al ‘Ayn and Ash Sharayjah now being partly irrigated with treated wastewater which accelerated the abandonment of the old settlement structures. The labour- and water use efficiency-driven transformation of the Al Jabal Al Akhdar oasis agriculture into increasingly market-oriented landuse systems questions its function as example of sustainable, bio-cultural heritage of Arabia.

Closure to “Determination of Water Use by Phreatophytes and Hydrophytes”

1967 ◽  
Vol 93 (3) ◽  
pp. 190-193
Author(s):  
G. H. Hughes ◽  
Charles C. McDonald
Keyword(s):  
Water Use

scholarly journals GlobWat – a global water balance model to assess water use in irrigated agriculture

2015 ◽  
Vol 19 (9) ◽  
pp. 3829-3844 ◽  
Author(s):  
J. Hoogeveen ◽  
J.-M. Faurès ◽  
L. Peiser ◽  
J. Burke ◽  
N. van de Giesen
Keyword(s):  
Water Balance ◽  
Water Use ◽  
Open Water ◽  
Water Balance Model ◽  
Green Water ◽  
Balance Model ◽  
Irrigated Agriculture ◽  
High Resolution Data ◽  
Food And Agriculture ◽  
Global Water

Abstract. GlobWat is a freely distributed, global soil water balance model that is used by the Food and Agriculture Organization (FAO) to assess water use in irrigated agriculture, the main factor behind scarcity of freshwater in an increasing number of regions. The model is based on spatially distributed high-resolution data sets that are consistent at global level and calibrated against values for internal renewable water resources, as published in AQUASTAT, the FAO's global information system on water and agriculture. Validation of the model is done against mean annual river basin outflows. The water balance is calculated in two steps: first a "vertical" water balance is calculated that includes evaporation from in situ rainfall ("green" water) and incremental evaporation from irrigated crops. In a second stage, a "horizontal" water balance is calculated to determine discharges from river (sub-)basins, taking into account incremental evaporation from irrigation, open water and wetlands ("blue" water). The paper describes the methodology, input and output data, calibration and validation of the model. The model results are finally compared with other global water balance models to assess levels of accuracy and validity.

Determination of the water use of two pairs of soybean isolines differing in stomatal frequency using a heat balance stem flow gauge

1995 ◽  
Vol 75 (1) ◽  
pp. 99-103 ◽  
Author(s):  
C. S. Tan ◽  
B. R. Buttery
Keyword(s):  
Soil Moisture ◽  
Water Use ◽  
Heat Balance ◽  
Sap Flow ◽  
Stomatal Frequency ◽  
Flow Rates ◽  
High Soil Moisture ◽  
Stem Flow ◽  
Glycine Max L

Using heat-balance stem flow gauges, we were able to measure directly and continuously the sap flow rates in two pairs of soybean [Glycine max (L.) Merr.] isolines differing in stomatal frequency. Plants with high stomatal frequency transpired significantly more water than the low stomatal frequency plants at high soil moisture levels. Under low soil moisture levels, the water use rate decreased greatly for the high stomatal frequency plants. Plants with low stomatal frequency were able to maintain greater sap flow rates than those with high stomatal frequency. Higher leaf temperatures associated with the low stomatal frequency plants were likely due to lower transpiration rates which reduced evaporative cooling especially under well-watered conditions. Key words:Glycine max (L.) Merr., transpiration, water deficits

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