scholarly journals Global agricultural green and blue water consumption under future climate and land use changes

2019 ◽  
Vol 574 ◽  
pp. 242-256 ◽  
Author(s):  
Zhongwei Huang ◽  
Mohamad Hejazi ◽  
Qiuhong Tang ◽  
Chris R. Vernon ◽  
Yaling Liu ◽  
...  
Keyword(s):  
Land Use ◽  
Water Consumption ◽  
Land Use Changes ◽  
Future Climate ◽  
Blue Water ◽  
Green And Blue Water

Agricultural green and blue water consumption and its influence on the global water system

2008 ◽  
Vol 44 (9) ◽  
Author(s):  
Stefanie Rost ◽  
Dieter Gerten ◽  
Alberte Bondeau ◽  
Wolfgang Lucht ◽  
Janine Rohwer ◽  
...  
Keyword(s):  
Water Consumption ◽  
Water System ◽  
Blue Water ◽  
Green And Blue Water ◽  
Global Water

Differences in the responses of flow and nutrient load to isolated and coupled future climate and land use changes

2020 ◽  
Vol 256 ◽  
pp. 109918 ◽  
Author(s):  
Chuan Luo ◽  
Zhaofu Li ◽  
Hongyu Liu ◽  
Hengpeng Li ◽  
Rongrong Wan ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Changes ◽  
Future Climate ◽  
Nutrient Load

scholarly journals Modeling the combined impact of future climate and land use changes on streamflow of Xinjiang Basin, China

2015 ◽  
Vol 47 (2) ◽  
pp. 356-372 ◽  
Author(s):  
Renhua Yan ◽  
Jiacong Huang ◽  
Yan Wang ◽  
Junfeng Gao ◽  
Lingyan Qi
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Land Use Planning ◽  
Scientific Information ◽  
Land Use Changes ◽  
Coupled Model ◽  
Climate Scenario ◽  
Future Climate ◽  
Climate Change Scenarios ◽  
Future Evolution

The response of hydrologic circulation to climate and land use changes is important in studying the historical, present, and future evolution of aquatic ecosystems. In this study, the Coupled Model Inter-comparison Project Phase 5 multi-model ensemble and a raster-based Xin'anjiang model were applied to simulate future streamflows under three climate change scenarios and two land use/cover change conditions in the Xinjiang Basin, China, and to investigate the combined effect of future climate and land use/cover changes on streamflow. Simulation results indicated that future climate and land use/cover changes affect not only the seasonal distributions of streamflow, but also the annual amounts of streamflow. For each climate scenario, the average monthly streamflows increase by more than 4% in autumn and early winter, while decreasing by more than −26% in spring and summer for the 21st century. The annual streamflows present a clear decreasing trend of −27%. Compared with land use/cover change, climate change affects streamflow change more. Land use/cover change can mitigate the climate change effect from January to August and enhance it in other months. These results can provide scientific information for regional water resources management and land use planning in the future.

Response of hydrological processes to climate and land use changes in Hiso River watershed, Fukushima, Japan

2021 ◽  
Author(s):  
Shilei Peng ◽  
Chunying Wang ◽  
Sadao Eguchi ◽  
Kanta Kuramochi ◽  
Masato Igura ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Land Use Changes ◽  
Future Climate ◽  
Hydrological Processes ◽  
Combination Method ◽  
Water Yield ◽  
Climate Scenarios ◽  
River Watershed ◽  
Annual Water

<p>Hydrological processes at basin scale are driven by climate and land-use changes. Hiso River watershed (HRW) is within a radiocesium contaminated area caused by the disaster in Fukushima Daiichi nuclear power plant (FDNPP). It’s urgently needed to make evaluations on how changes of climate and land-use bring impacts on hydrological processes, which control pollutants transport in watershed. This study applied a combination method of Statistical DownScaling Model (SDSM) and Soil and Water Assessment Tool (SWAT) to generate future climatic and hydrologic variables. Future climate data was obtained from three Representative Concentration Pathway (RCP2.6, 4.5 and 8.5) scenarios of a single General Circulation Models (GCMs) in three future periods of 2030s, 2060s and 2090s (2010-2039, 2040-2069, 2070-2099), with a baseline period (1980-2009). Furthermore, according to land-use change in HRW during 2013-2017, three land-use change scenarios under the three future climate scenarios were established. Results suggested that SDSM showed good capabilities in capturing daily maximum/minimum temperature and precipitation. The SWAT model presented good performances in simulating monthly and yearly streamflow. Results also suggested projected higher temperatures and lower rainfall led to decreased annual water yield and evapotranspiration (ET). The annual water yield and ET decreased in most seasons while had a slight increase in spring. RCP8.5 scenario always generated larger magnitudes for climatic variables and water balance components compared with other climate scenarios. Land-use changes had strong impact on surface runoff and groundwater flow. These findings could provide reference for decontamination and revitalization policy-making under complicated land use and climate change conditions.</p>

scholarly journals Mitigating Drought Conditions under Climate and Land Use Changes by Applying Hedging Rules for the Multi-Reservoir System

Water ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3095
Author(s):  
Zejun Li ◽  
Bensheng Huang ◽  
Zhifeng Yang ◽  
Jing Qiu ◽  
Bikui Zhao ◽  
...  
Keyword(s):  
Land Use ◽  
Environmental Changes ◽  
Land Use Changes ◽  
Hydrologic Model ◽  
Future Climate ◽  
Severe Drought ◽  
Reservoir System ◽  
Operating Rules ◽  
Drought Conditions ◽  
Hedging Rules

Climate and land use changes have substantially affected hydrologic cycles and increased the risk of drought. Reservoirs are one of the important means to provide resilience against hydrologic variability and achieve sustainable water management. Therefore, adaptive reservoir operating rules are needed to mitigate their adverse effects. In this study, the Hanjiang River Basin in southeast China was selected as the study area. Future climate and land use projections were produced by the Delta method and CA-Markov model, respectively. Future climate forcings and land use patterns were then incorporated into a distributed hydrologic model to evaluate river flow regime shifts. Results revealed that climate and land use changes may lead to severe drought conditions in the future. Lower flows are shown to be more sensitive to environmental changes and a decline of monthly flows could reach up to nearly 30% in the dry season. To address the threat of increasing drought uncertainties in the water supply system, the aggregation-decomposition method incorporated with hedging rules was applied to guide the multi-reservoir operation. Parameters of optimal hedging rules were obtained by a multi-objective optimization algorithm. The performance of hedging rules was evaluated by comparison to standard operating policies and conventional operating rules with respect to reliability, resiliency, vulnerability, and sustainability indices. Results showed that the multi-reservoir system guided by hedging rules can be more adaptive to the environmental changes.

scholarly journals Modelling study to quantify the impact of future climate and land use changes on water resources availability at catchment scale

2020 ◽  
Author(s):  
Muhammad Afzal ◽  
Nikolaos Vavlas ◽  
Ragab Ragab
Keyword(s):  
Land Use ◽  
Water Resources ◽  
Groundwater Recharge ◽  
Land Use Changes ◽  
Standardized Precipitation Index ◽  
Future Climate ◽  
Emission Scenarios ◽  
The Past ◽  
High Emission ◽  
The Impact

Abstract The focus of this study was to investigate the impact of climate and land-use changes on water resources and to find suitable drought indices to identify the occurrence, frequency and severity of the past and future drought events. The Ebbw catchment, Wales, UK was selected for this study. Data for the 1961–2012 period were used as input to the DiCaSM model. Following model calibration and validation, the model was run with UKCP09 future climate scenarios for three periods (30 years each) up to 2099 under three emission scenarios. The reconnaissance drought index, the standardized precipitation index, soil moisture deficit and the wetness index were able to reproduce the past drought events. The data of UKCP09, simple change factors to temperature (± °C) and rainfall (%) using Joint Probability plot and daily values of the weather generator were input to the model. The projections indicated that the streamflow and groundwater recharge are likely to increase in winter and to decrease in spring, summer and autumn. Under all emission scenarios, the greatest decrease in groundwater recharge and the streamflow is projected in the 2050s and 2080s under high emission scenario. Moreover, under medium and high emission scenarios, severity and frequency of the drought events are likely to be high. Land use change from grass and/or arable to woodland had significant impact on water resources.

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