Impacts of climate change and human activities on water resources in the Ebinur Lake Basin, Northwest China

2021 ◽  
Author(s):  
Yuejian Wang ◽  
Xinchen Gu ◽  
Guang Yang ◽  
Junqiang Yao ◽  
Na Liao
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Human Activities ◽  
Northwest China ◽  
Lake Basin ◽  
Ebinur Lake ◽  
Ebinur Lake Basin ◽  
Impacts Of Climate Change

scholarly journals Uncertainty in gap filling and estimating the annual sum of carbon dioxide exchange for the desert Tugai forest, Ebinur Lake Basin, Northwest China

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8530
Author(s):  
Dexiong Teng ◽  
Xuemin He ◽  
Jingzhe Wang ◽  
Jinlong Wang ◽  
Guanghui Lv
Keyword(s):  
Carbon Dioxide ◽  
Northwest China ◽  
Desert Ecosystem ◽  
Carbon Dioxide Exchange ◽  
Lake Basin ◽  
Gap Filling ◽  
Ebinur Lake ◽  
Annual Carbon ◽  
Arid Desert ◽  
Ebinur Lake Basin

In most eddy covariance (EC) studies, carbon flux measurements have a high defect rate for a variety of reasons. Obtaining the annual sum of carbon dioxide exchange requires imputation of data gaps with high precision and accuracy. This study used five methods to fill the gaps in carbon flux data and estimate the total annual carbon dioxide exchange of the Tugai forest in the arid desert ecosystem of Ebinur Lake Basin, Northwest China. The Monte Carlo method was used to estimate the random error and bias caused by gap filling. The results revealed that (1) there was a seasonal difference in the friction velocity threshold of nighttime flux, with values in the growing season and non-growing season of 0.12 and 0.10 m/s, respectively; (2) the five gap-filling methods explained 77–84% of the data variability in the fluxes, and the random errors estimated by these methods were characterized by non-normality and leptokurtic heavy tail features, following the Laplacian (or double-exponential) distribution; (3) estimates of the annual sum of carbon dioxide exchange using the five methods at the study site in 2015 ranged from −178.25 to −155.21 g C m−2 year−1, indicating that the Tugai forest in the Ebinur Lake Basin is a net carbon sink. The standard deviation of the total annual carbon dioxide exchange sums estimated by the five different methods ranged from 3.15 to 19.08 g C m−2 year−1, with bias errors ranging from −13.69 to 14.05 g C m−2 year−1. This study provides a theoretical basis for the carbon dioxide exchange and carbon source/sink assessment of the Tugai forest in an arid desert ecosystem. In order to explore the functioning of the Tugai forest at this site, a greater understanding of the underlying ecological mechanisms is necessary.

scholarly journals Research on Economic Bearing Capacity of Farmers to Agricultural Irrigation Water Prices in the Ebinur Lake Basin

2019 ◽  
Vol 11 (7) ◽  
pp. 2155 ◽  
Author(s):  
Lei Wang ◽  
Zibibula Simayi ◽  
Shengtian Yang ◽  
Yusuyunjiang Mamitimin
Keyword(s):  
Irrigation Water ◽  
Economic Factor ◽  
Northwest China ◽  
Farm Households ◽  
Water Price ◽  
Lake Basin ◽  
Water Shortages ◽  
Ability To Pay ◽  
Ebinur Lake ◽  
Ebinur Lake Basin

The Ebinur Lake Basin is one of the few lakes in the arid area of northwest China where water shortages have always been an important factor hindering development. Therefore, this study takes as its objective an investigation of water prices as the main economic factor that restricts the sustainable utilization of water resources to explore the economic affordability of water prices for farmers. Furthermore, the study attempts to determine the appropriate range of prices for water price reform. In this study, a questionnaire was designed to survey 210 agricultural water users in Wenquan County, Bole City, and Jinghe County, areas where agricultural activities are relatively concentrated in the vicinity of the Ebinur Lake Basin. Based on the data from the field survey, the range of economic affordability for farmers in the Ebinur Lake Basin was categorized by the ELES model; according to the analysis method of water tolerability index, a suitable water price standard for farmers’ reform was obtained. The results show that (1) 97% of the farm households have the ability to pay irrigation water prices and only 3% do not have the ability to pay and (2) economically affordable water prices for farm households range from 79 to 143 €/hm2, the latitude for raising water prices is 64 €/hm2, and the adjustable range of unit water pricing is between 0.014 and 0.042 €/m3. It can be seen that increasing water prices is feasible.

Evaluation of impacts of climate change and human activities on streamflow in the Poyang Lake basin, China

2016 ◽  
Vol 30 (14) ◽  
pp. 2562-2576 ◽  
Author(s):  
Qiang Zhang ◽  
Jianyu Liu ◽  
Vijay P. Singh ◽  
Xihui Gu ◽  
Xiaohong Chen
Keyword(s):  
Climate Change ◽  
Human Activities ◽  
Poyang Lake ◽  
Lake Basin ◽  
Poyang Lake Basin ◽  
Impacts Of Climate Change

Hydrological Response of Runoff to Climate Change of Typical Tributaries in Ebinur Lake Basin of Xinjiang

2018 ◽  
Vol 45 (2) ◽  
pp. 160-168 ◽  
Author(s):  
Yuejian Wang ◽  
Zhihui Liu ◽  
Junqiang Yao ◽  
Chahan Bayin ◽  
Yongsheng Zhu
Keyword(s):  
Climate Change ◽  
Lake Basin ◽  
Hydrological Response ◽  
Ebinur Lake ◽  
Ebinur Lake Basin

scholarly journals Adverse impacts of climate change in Maharlou Lake Basin, Iran

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Babak Zolghadr-Asli ◽  
Siavash Behrooz-Koohenjani
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Time Window ◽  
Annual Rainfall ◽  
Lake Basin ◽  
Climate Change Scenarios ◽  
Water Demands ◽  
Average Annual Temperature ◽  
The Status ◽  
Impacts Of Climate Change

Climate change can alter the status quo of the world as we know today. Water resources may also be influenced by these plausible impacts. The common perception is that these changes may exacerbate the situation of water resources in arid and semi-arid regions, such as the Middle-East, which are experiencing mild to severe water stress due to limited water availability and growing water demands. In that spirit, this study aims to investigate the possible impacts of climate change on surface water in Maharlou Lake basin, Iran. Reportedly, this basin has already shown some symptoms of the water-related crisis, which highlights the importance of conducting climate change studies in this region. The CansESM2 model was employed to predict the basin’s climatic response under various climate change scenarios. The hydrologic response of the basin was, then, simulated using IHACRES. The results have demonstrated a 4% decrease in average annual rainfall, a 2% increase in average annual temperature, and, finally, a 24% decrease in average annual streamflow of the basin in the (2010-2099) time window. While the results suggest that recent water-related challenges in the basin might have caused by climate change, further in-depth studies are required to reveal the exact reasons.

Sign in / Sign up

Export Citation Format

Share Document