scholarly journals Adapting Agricultural Water Use to Climate Change in a Post-Soviet Context: Challenges and Opportunities in Southeast Kazakhstan

Human Ecology ◽  
2017 ◽  
Vol 45 (6) ◽  
pp. 747-762 ◽  
Author(s):  
Tristam Barrett ◽  
Giuseppe Feola ◽  
Marina Khusnitdinova ◽  
Viktoria Krylova
Keyword(s):  
Climate Change ◽  
Water Use ◽  
Agricultural Water ◽  
Agricultural Water Use ◽  
Challenges And Opportunities

Impact assessment of climate change and human activities on GHG emissions and agricultural water use

2021 ◽  
Author(s):  
Shikun Sun ◽  
Yihe Tang
Keyword(s):  
Climate Change ◽  
Water Use ◽  
Water Conservation ◽  
Positive Impact ◽  
Ghg Emissions ◽  
Production Factor ◽  
Agricultural Water ◽  
Dndc Model ◽  
Agricultural Water Use ◽  
Means Of Production

<p>The agriculture sector is one of the largest users of water and a significant source of greenhouse gas (GHG) emissions. The development of low-GHG-emission and water-conserving agriculture will inevitably be the trend in the future. Because of the physiological differences among crops and their response efficiency to external changes, changes in planting structure, climate and input of production factors will have an impact on regional agricultural water use and GHG emissions. This paper systematically analyzed the spatial-temporal evolution characteristics of crop planting structure, climate, and production factor inputs in Heilongjiang Province, the main grain-producing region of China, from 2000 to 2015, and quantified the regional agricultural water use and GHG emissions characteristics under different scenarios by using the Penman-Monteith formula and the Denitrification-Decomposition (DNDC) model. The results showed that the global warming potential (GWP) increased by 15% due to the change in planting structure. A large increase in the proportion of rice and corn sown was the main reason. During the study period, regional climate change had a positive impact on the water- saving and emission reduction of the agricultural industry. The annual water demand per unit area decreased by 19%, and the GWP decreased by 12% compared with that in 2000. The input of fertilizer and other means of production will have a significant impact on GHG emissions from farmlands. The increase in N fertilizer input significantly increased N<sub>2</sub>O emissions, with a 5% increase in GWP. Agricultural water consumption and carbon emissions are affected by changes in climate, input of means of production, and planting structure. Therefore, multiple regulatory measures should be taken in combination with regional characteristics to realize a new layout of planting structure with low emissions, water conservation, and sustainability.</p>

POTENTIAL EFFECTS OF CLIMATE CHANGE ON AGRICULTURAL WATER USE IN THE SOUTHEAST U.S.

1999 ◽  
Vol 35 (6) ◽  
pp. 1551-1561 ◽  
Author(s):  
Upton Hatch ◽  
Shrikant Jagtap ◽  
Jim Jones ◽  
Marshall Lamb
Keyword(s):  
Climate Change ◽  
Water Use ◽  
Agricultural Water ◽  
Agricultural Water Use

scholarly journals Model Application for Sustainable Agricultural Water Use

Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 396
Author(s):  
Jaehak Jeong ◽  
Xuesong Zhang
Keyword(s):  
Climate Change ◽  
Water Use ◽  
Data Science ◽  
Cropping Systems ◽  
Model Development ◽  
Agricultural Water ◽  
Crop Models ◽  
Agricultural Water Use ◽  
Modeling Techniques ◽  
Integrate Data

With the growing population and climate change, increasing demands for water are intensifying competition between agricultural stakeholders. Since the mid-20th century, numerous crop models and modeling techniques have emerged for the quantitative assessment of cropping systems. This article introduces a collection of articles that explore current research in model applications for sustainable agricultural water use. The collection includes articles from model development to regional and field-scale applications addressing management effects, model uncertainty, irrigation decision support systems, and new methods for simulating salt balances. Further work is needed to integrate data science, modern sensor systems, and remote sensing technologies with the models in order to investigate the sustainability of agricultural systems in regions affected by land-use change and climate change.

scholarly journals Agro-Economic Water Productivity-Based Hydro-Economic Modeling for Optimal Irrigation and Crop Pattern Planning in the Zarrine River Basin, Iran, in the Wake of Climate Change.

2018 ◽  
Author(s):  
Farzad Emami ◽  
Manfred Koch
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Water Use ◽  
Water Productivity ◽  
Economic Benefits ◽  
Hydrologic Model ◽  
Management Tool ◽  
Agricultural Water ◽  
Crop Water ◽  
Agricultural Water Use

For water-stressed regions like Iran improving the effectiveness and productivity of agricultural water-use is of utmost importance due to climate change and unsustainable demands. Therefore, a hydro-economic model has been developed here for the Zarrine River Basin with the central concept of that demands are value-sensitive functions, where quantities of water-uses at different locations and times have a changeable economic benefits. To do this, the potential crop yields and the surface and groundwater resources, especially Boukan Dam inflow are simulated using the hydrologic model, SWAT, based on predicted climatic scenarios i.e. quantile mapping-downscaled projections. Then, to allocate the agricultural water based on the agro- economic crop water productivity (AEWP) of crops, a basin-wide water management tool, MODSIM, is customized. Next, a simulation- optimization model has been developed using a coupled CSPSO-MODSIM, to optimize the total AEWP, considering climatic impact and crop pattern scenarios, for 2020-2038, 2050-2068 and 2080-2098 periods. Finally, the optimum crop pattern and crop water irrigation depths are presented for different RCPs and periods. The results indicated that this approach will improve considerably the AEWPs and decrease the agricultural water-use up to 40%. Thus, this integrated model is able to support water authorities and other stakeholder in a water-scarce basin, as is the study area.

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