scholarly journals Effect of Water Resources in the Queretaro River: Climate Analysis and Other Changes

Author(s):  
E. Gonzalez-Sosa ◽  
N.M. Ramos-Salinas ◽  
C.A. Mastachi-Loza ◽  
R. Becerril-Pin
Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1029
Author(s):  
Iakovos Kalamartzis ◽  
George Menexes ◽  
Pantazis Georgiou ◽  
Christos Dordas

Water stress in one of the most important abiotic stresses that affects the productivity of many crop species worldwide. In addition, the climate change creates new challenges for crop adaptation especially as water resources become limited and the increase in water stress becomes more pronounced even in areas where there is adequate water supply. The objective of the present study was to determine the effect of water stress on physiological characteristics of five cultivars of basil under field conditions. Water stress affected leaf temperature, dry herb yield, leaf water potential, assimilation rate and gas exchange parameters, quantum yield, instantaneous water use efficiency (WUE), and essential oil content. From the physiological characteristics water potential and assimilation rate can be used for the selection of basil cultivars tolerant to water stress. In addition, essential oil content was lower under water stress indicating that essential oil content is correlated with water availability. From the present study it is obvious that there are tolerant basil cultivars to water stress and can be found using physiological traits such as water potential and assimilation rate and can be used to save and use water more sustainable and also conserve the water resources.


Water ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 266 ◽  
Author(s):  
Yao Zhang ◽  
Wenxin Liu ◽  
Minjuan Zhao

Studying the influencing factors of the drag effect of water resources and its temporal–spatial variation can help governments to solve the problem of water resource constraints on the economic growth of different regions. Based on Romer’s hypothesis, this paper uses panel data to empirically analyze the drag effect of water resources in China’s 31 provinces from 1987 to 2017. The research shows that: (1) Water resources have certain constraints on the economic growth of each region. Regional economic growth has declined by 0.23% (eastern), 0.07% (western), 0.43% (central) and 0.09% (northeastern) annually. (2) In provinces with rapid labor growth, water resources have a greater impact on economic growth. In provinces with low labor growth rates, the drag effect of water resources on economic growth is affected by the capital stock of the region. (3) Through the analysis of the water drag effect in different time periods, this paper finds that in some periods, the government’s mobilization of water resources for the economic growth in some regions will not only promote the transfer of labor between regions, but also cause changes in the regional water resources. According to the results of this paper, the following conclusions can be drawn: (1) It is necessary to vigorously develop water-saving agriculture, improve technical efficiency, and reduce the strong dependence of economic growth on water resources in the provinces which has a strong water drag effect on economic growth; (2) Provinces with moderate water resource constraints should take the lead in deploying strategic emerging industries, and accelerate the development of the tertiary industry; (3) Provinces with weakly water resource restrictions can promote the development of capital-based industries. Not only can the development of the economy be rational, but it can also reduce the economy’s dependence on resources, thereby achieving the sustainable use of water resources and sustainable economic growth.


2015 ◽  
Vol 737 ◽  
pp. 732-736
Author(s):  
Huan Liu ◽  
Zhi Wei Xu

Through the water compensation models, the article studies the effect of water resources compensation policy on the upstream and downstream areas under differential empowerment systems. Study finds that difference in water resources utilization efficiency is the precondition of water resources compensation policy implementation. With changes of water resources utilization efficiency, the compensation price changes in the same direction and the compensation amount changes in the opposite direction. Finally, water resources compensation policy will improve the welfare of both areas, which is highly consistent with Coase theorem.


2019 ◽  
Author(s):  
Chester F. Ropelewski ◽  
Phillip A. Arkin
Keyword(s):  

1990 ◽  
Vol 26 (1) ◽  
pp. 2-4 ◽  
Author(s):  
George H. Davis

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