Agricultural water and land resources allocation considering carbon sink/source and water scarcity/degradation footprint

2021 ◽  
pp. 152058
Author(s):  
Hui Wu ◽  
Shanshan Guo ◽  
Ping Guo ◽  
Baoying Shan ◽  
Yan Zhang
Keyword(s):  
Water Scarcity ◽  
Carbon Sink ◽  
Resources Allocation ◽  
Land Resources ◽  
Agricultural Water

scholarly journals Emerging investigator series: towards a framework for establishing the impacts of pharmaceuticals in wastewater irrigation systems on agro-ecosystems and human health

2019 ◽  
Vol 21 (4) ◽  
pp. 605-622 ◽  
Author(s):  
Laura J. Carter ◽  
Benny Chefetz ◽  
Ziad Abdeen ◽  
Alistair B. A. Boxall
Keyword(s):  
Human Health ◽  
Water Scarcity ◽  
Wastewater Irrigation ◽  
Agricultural Irrigation ◽  
Agricultural Water ◽  
Reclaimed Wastewater ◽  
Irrigation Systems ◽  
Water Demands ◽  
Attractive Option

Use of reclaimed wastewater for agricultural irrigation is seen as an attractive option to meet agricultural water demands of a growing number of countries suffering from water scarcity.

Impact of changing cropping pattern on the regional agricultural water productivity

2014 ◽  
Vol 153 (5) ◽  
pp. 767-778 ◽  
Author(s):  
S. K. SUN ◽  
P. T. WU ◽  
Y. B. WANG ◽  
X. N. ZHAO
Keyword(s):  
Water Scarcity ◽  
Crop Production ◽  
Water Footprint ◽  
Water Productivity ◽  
Irrigation District ◽  
Cropping Pattern ◽  
Agricultural Water ◽  
Cropping Patterns ◽  
Cash Crops ◽  
The Impact

SUMMARYWater scarcity is a major constraint of agricultural production in arid and semi-arid areas. In the face of future water scarcity, one possible way the agricultural sector could be adapted is to change cropping patterns and make adjustments for available water resources for irrigation. The present paper analyses the temporal evolution of cropping pattern from 1960 to 2008 in the Hetao Irrigation District (HID), China. The impact of changing cropping patterns on regional agricultural water productivity is evaluated from the water footprint (WF) perspective. Results show that the area under cash crops (e.g. sunflower and melon) has risen phenomenally over the study period because of increased economic returns pursued by farmers. Most of these cash crops have a smaller WF (high water productivity) than grain crops in HID. With the increase of area sown to cash crops, water productivity in HID increased substantially. Changing the cropping pattern has significant effects on regional crop water productivity: in this way, HID has increased the total crop production without increasing significantly the regional water consumption. The results of this case study indicate that regional agricultural water can be used effectively by properly planning crop areas and patterns under irrigation water limitations. However, there is a need to foster a cropping pattern that is multifunctional and sustainable, which can guarantee food security, enhance natural resource use and provide stable and high returns to farmers.

Conversion of plastic wastes to alternative fuel using G2F system

2019 ◽  
Vol 1 (6) ◽  
pp. 692-700
Author(s):  
Naresh Srinivasan ◽  
Mohanraj Rajamanickam ◽  
Mythili Gnanamangai Balasubramaniyan ◽  
Philip Robinson Jayachandran
Keyword(s):  
Water Scarcity ◽  
Cost Effective ◽  
Alternative Fuel ◽  
Land Resources ◽  
Renewable Materials ◽  
Plastic Wastes ◽  
Present Decade ◽  
Other Substances ◽  
Minimal Energy Cost ◽  
High Investment

The present decade saying ban plastic is much worried about the water scarcity. It’s being revealed banning plastic bring more water scarcity as the alternative goods to plastic are more water consuming in its production. Water, air and land being the primary requirement for life should be preserved in every product invention and technological innovation. The present study proposes a suitable technology that saves all the required land resources. The so far used plastics are said to be dump threat to land resources and micro lives in it. The existence of plastic ban is a profound threat to water. Air is being polluted every day due to the exhaust of fuel and heaps of land fill. An alternative to plastics might be good invention but to recycle the already existing plastics are the real solutions to the plastics. Plastics are typically organic polymers of high molecular mass and often contain other substances. They are usually synthetic, most commonly derived from petrochemicals. However an array of variants are made from renewable materials such as polylactic acid from corn or cellulosic from cotton linters. Having a strong chemical bond that makes them degrade very slowly, which creates environmental issues and makes the soil unfit for vegetation. Conversion of plastic into alternative fuel may require high investment in terms of energy. The present project addresses the minimal energy (cost effective) to convert plastic wastes and sources to convert into crude and purified fuel resources. The results revealed that 600-800ml of crude oil can be obtained from one kilogram of one time disposable plastics through paralysis in 15 minutes. During the conversion 10% per Kg methane is also produced as by product.

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