Modelling the effect of rainfall variability, land use change and increased reservoir abstraction on surface water resources in semi-arid southern Zimbabwe

2011 ◽  
Vol 36 (14-15) ◽  
pp. 1025-1032 ◽  
Author(s):  
F.T. Mugabe ◽  
T. Chitata ◽  
J. Kashaigili ◽  
I. Chagonda
2010 ◽  
Vol 24 (9) ◽  
pp. 1123-1132 ◽  
Author(s):  
Lei Wang ◽  
Zhongjing Wang ◽  
Toshio Koike ◽  
Hang Yin ◽  
Dawen Yang ◽  
...  

2018 ◽  
pp. 1009
Author(s):  
Judy Stewart

Since 2015, new provisions have been added to Alberta’s Municipal Government Act (MGA) that arguably authorize municipalities to manage components of the environment, such as surface water resources and air quality at the local and regional geopolitical landscape scales. Since 2013, Part 17.1 enabled voluntary formation of “growth management boards” (GMBs) by two or more participating municipalities, and once appointed by the Minister, GMBs are empowered to create “growth plans” to govern growth-related land use decision-making processes within the boundaries of the participating municipalities. Part 17.1 was amended in 2016 and new regulations followed in 2017. City Charter provisions enacted in 2015 give broad governance powers to cities. MGA provisions that create both these new institutional arrangements do not preclude GMBs or cities from developing municipal environmental management objectives. Recent additional MGA amendments enacted as the Modernized Municipal Government Act (MMGA) in December 2016, and further amendments in the spring of 2017 added a preamble, defined “body of water” for the purposes of the MGA, provided for intermunicipal collaborative governance of land use, and amended the environmental reserve provisions and other regulatory aspects of Part 17: Planning and Development. Two new purposes of municipal government were added: “to work collaboratively with neighbouring municipalities to plan, deliver and fund intermunicipal services,” and “to foster the well-being of the environment.” In this article, amendments to the MGA since 2015 are examined and analyzed in light of Alberta’s regional watershed scale land use policy, legislation, and regulations to determine if Alberta municipalities are now authorized to manage the environment, specifically surface water resources and water quality.


Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3581
Author(s):  
Camille Labrousse ◽  
Wolfgang Ludwig ◽  
Sébastien Pinel ◽  
Mahrez Sadaoui ◽  
Guillaume Lacquement

In the Mediterranean, climate change and human pressures are expected to significantly impact the availability of surface water resources. In order to quantify these impacts during the last 60 years (1959–2018), we examined the hydro-climatic and land use change evolution in six coastal river basins of the Gulf of Lion in southern France. By combining observed water discharge, gridded climate, mapped land use and agricultural censuses data, we propose a statistical regression model which successfully reproduces the variability of annual water discharge in all basins. Our results clearly demonstrate that, despite important anthropogenic water withdrawals for irrigation, climate change is the major driver for the detected reduction of water discharge. The model can explain 78–88% of the variability of annual water discharge in the study catchments. It requires only two climatic indices that are solely computed from monthly temperature (T) and precipitation (P) data, thus allowing the estimation of the respective contributions of both parameters in the detected changes. According to our results, the study region experienced on average a warming trend of 1.6 °C during the last 60 years which alone was responsible for a reduction of almost 25% of surface water resources.


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