An operational sociohydrological model to understand the feedbacks between community sensitivity and environmental flows for an endorheic lake basin, Lake Bakhtegan, Iran

2021 ◽  
pp. 127375
Author(s):  
Masoud Amirkhani ◽  
Heidar Zarei ◽  
Fereydoun Radmanesh ◽  
Saket Pande
Keyword(s):  
Environmental Flows ◽  
Lake Basin ◽  
Endorheic Lake

scholarly journals New Integrated Hydrologic Approach for the Assessment of Rivers Environmental Flows Into the Urmia Lake

2021 ◽  
Author(s):  
Ali Mobadersani ◽  
Ali Hosseinzadeh Dalir ◽  
Mehdi Yasi ◽  
Hadi Arvanaghi ◽  
Mark Kennard
Keyword(s):  
Agricultural Sector ◽  
Environmental Flows ◽  
Environmental Water ◽  
Environmental Flow ◽  
Urmia Lake ◽  
Critical Conditions ◽  
Lake Basin ◽  
Lake Urmia ◽  
Monthly Basis ◽  
Environmental Requirement

Abstract In the conducted researches recently the greatest focus has been on the environmental water supplement of rivers individually and independently. However, in closed basins leading to lakes and wetlands, a comprehensive and integrated view of all rivers in the basin is required simultaneously. This has affected Lake Urmia, which is the second largest saltwater lake in the world. This lake has been in danger of drying up in recent years as a result of not allocating the required environmental flow due to the increase in water resources consumption in the agricultural sector and climate change. In this study, a method derived from the flow duration curve (FDC) shifting method is presented in addition to the possibility of providing the environmental flow of rivers leading to the lake that can make the least amount of change in the hydrological characteristics of rivers to provide the volume of required water by the ecosystem of lakes or downstream wetlands. This method is based on daily data of hydrometric stations and, unlike the conventional method, which presents the results on a monthly basis, it can calculate the amount of environmental requirement of rivers in real-time according to the upstream inlet of the river. This method has been used in the Urmia Lake basin and according to the results, it can provide the environmental requirement of lake by allocating 70.5% of the annual flow of rivers and save the lake and the ecosystem of the region from the current critical conditions.

An operational sociohydrological model to understand the feedbacks between community sensitivity and environmental flows for an endorheic lake basin, Lake Bakhtegan Iran

2020 ◽  
Author(s):  
Masoud Amirkhani ◽  
Heidar Zarei ◽  
Fereydoun Radmanesh ◽  
Saket Pande
Keyword(s):  
Water Resources ◽  
Water Allocation ◽  
Environmental Flows ◽  
Coupled Model ◽  
Well Being ◽  
Lake Basin ◽  
State Variables ◽  
Agricultural Catchments ◽  
Dynamic Relationship ◽  
Southwest Of Iran

<p>Climate change, drought, overuse of water from surface(-ground) water resources has caused major problems in endorheic basins across the world. One such basin is Bakhtegan Lake Basin, southwest of Iran. The water entering Bakhtegan Lake has decreased, which has led to a decrease in the water level of this lake. Secondly, groundwater level has decreased in the Bakhtegan aquifer. These problems occurred in the Bakhtegan basin as a result of neglecting human roles as theactive agency within the hydrology of the region. In this study, we present a sociohydrological model in order to simulate dynamic relationship between community sensitivity, which responds to environmental well-being, and water use state variables as key to understanding the competition between water allocation between agriculture and the environment in the basin. Furthermore, agriculture in this basin plays a key role in the economic livelihoods which in turns plays a major role in the competition of water allocation between agriculture and environment in the Bakhtegan area.</p><p>The sociohydrological model is developed by coupling water demand and balance based WEAP (Water Evaluation And Planning) model with community sensitivity dynamic equations of the sociohydrological model by Roobavannan et al. (2017). The unique aspect of this model is that the six parameters of the community sensitivity related equations are calibrated, while being coupled to WEAP, using Elitist Non-Dominated Sorting Genetic (NSGAII) Algorithm on observed annual streamflow at three gauges within the basin.</p><p>The results demonstrate that the calibrated coupled model is able to simulate past allocations of water to agriculture and the environment in the basin, which we compare with available records. Further, we provide non-dominated pareto set of parameters, that demonstrate equifinality in pareto superior parameters of community sensitivity.</p><p>References:</p><p>Roobavannan, M., Kandasamy, J., Pande, S., Vigneswaran, S., & Sivapalan, M. (2017). Role of sectoral transformation in the evolution of water management norms in agricultural catchments: A sociohydrologic modeling analysis. Water Resources Research, 53, 8344–8365. https://doi.org/10.1002/2017WR020671</p>

PROBLEMS CAUSED BY SMALL PIG FARM ODOR AROUND THE WESTERN SONGKHLA LAKE BASIN

2017 ◽  
Vol 2 (1) ◽  
pp. 1-13
Author(s):  
Papontee Teeraphan
Keyword(s):  
Air Pollution ◽  
Lake Basin ◽  
Urgent Problem ◽  
The Public ◽  
Pig Farms ◽  
Pig Farm ◽  
The Government ◽  
The Moment ◽  
Source Of Information ◽  
Proper Solutions

Pollution is currently a significant issue arising awareness throughout the world. In Thailand, pollution can often be seen in any part of the country. Air pollution is pointed as an urgent problem. This pollution has not damaged only to human health and lives, it has destroyed environment, and possibly leading to violence. In Phattalung, air pollution is affecting to the residents’ lives. Especially, when the residents who are mostly agriculturists have not managed the waste resulted from the farm. In Phattalung, at the moment, there are many pig farms, big and small. Some of them are only for consuming for a family, some, however, are being consumed for the business which pigs will be later purchased by big business companies. Therefore, concerning pollution, the researcher and the fund giver were keen to focus on the points of the air pollution of the small pig farms. This is because it has been said that those farms have not been aware on the pollution issue caused by the farms. Farm odor is very interesting which can probably lead to following problems. The researcher also hopes that this research can be used as a source of information by the government offices in order to be made even as a policy or a proper legal measurement. As the results, the study shows that, first, more than half of the samples had smelled the farm odor located nearby their communities, though it had not caused many offenses. Second, the majority had decided not to act or response in order to solve the odor problem, but some of them had informed the officers. The proper solutions in reducing offenses caused by pig farm odor were negotiation and mediation. Last, the majority does not perceive about the process under the Public Health Act B.E. 2535.

Vegetation of sandy coasts of Lake Baikal

2016 ◽  
pp. 46-66
Author(s):  
Тю Фю Dulepova
Keyword(s):  
Lake Baikal ◽  
Lake Basin ◽  
Floristic Diversity ◽  
Southern Siberia ◽  
Irkutsk Region ◽  
Relief Formation ◽  
The Republic ◽  
River Valleys ◽  
High Degree ◽  
Semiarid Conditions

The aeolian processes play an important role in the relief formation under the semiarid conditions of the intermountain basins of Southern Siberia. Ancient sand landforms occur in different regions of Siberia — the Ob, Chuya, Аley, Yenisei, Аngara, Selenga, Chikoy, Khilok and Chara river valleys and Lake Baikal coasts. The sandy coasts of Lake Baikal are of great interest in terms of floristic diversity determined by a high degree of endemism. Despite centuries of study of the lake basin, sand vegetation is poorly described in the literature. This study presents an analysis of 184 relevés of psammophytic vegetation from the Republic of Buryatia (Severobaikalsky, Barguzinsky, Pribaikalsky districts) and Irkutsk region (Olkhon Island) obtained in 2009–2014.

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