Water shortage and inequality in arid Minqin oasis of northwest China: adaptive policies and farmers’ perceptions

2017 ◽  
Vol 22 (8) ◽  
pp. 934-951 ◽  
Author(s):  
Yan Tan ◽  
Xuchun Liu
Keyword(s):  
Water Shortage ◽  
Northwest China ◽  
Adaptive Policies ◽  
Minqin Oasis

scholarly journals Charged Particle (Negative Ion)-Based Cloud Seeding and Rain Enhancement Trial Design and Implementation

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1644
Author(s):  
Wei Zheng ◽  
Fengming Xue ◽  
Ming Zhang ◽  
Qiqi Wu ◽  
Zhou Yang ◽  
...  
Keyword(s):  
Large Scale ◽  
Evaluation Method ◽  
Water Shortage ◽  
Northwest China ◽  
Negative Ion ◽  
Cloud Seeding ◽  
Weather Modification ◽  
Solid Carbon Dioxide ◽  
Design And Implementation ◽  
Hygroscopic Salts

China has been suffering from water shortage for a long time. Weather modification and rainfall enhancement via cloud seeding has been proved to be effective to alleviate the problem. Current cloud seeding methods mostly rely on solid carbon dioxide and chemicals such as silver iodide and hygroscopic salts, which may have negative impacts on the environment and are expensive to operate. Lab experiments have proved the efficiency of ion-based cloud seeding compared with traditional methods. Moreover, it is also more environmentally friendly and more economical to operate at a large scale. Thus, it is necessary to carry out a field experiment to further investigate the characteristics and feasibility of the method. This paper provides the design and implementation of the ion-based cloud seeding and rain enhancement trial currently running in Northwest China. It introduces the basic principle of the trial and the devices developed for it, as well as the installation of the bases and the evaluation method design for the trial.

The Dynamic Analysis of Biocapacity and Driving Force in Minqin Oasis of Western China over the Past 20 Years

2011 ◽  
Vol 356-360 ◽  
pp. 2838-2847
Author(s):  
Jun Du ◽  
Dong Xia Yue ◽  
Jian Jun Guo ◽  
Jia Jing Zhang ◽  
He Wen Niu ◽  
...  
Keyword(s):  
Economic Development ◽  
Land Reclamation ◽  
Water Shortage ◽  
Western China ◽  
Ecological Environment ◽  
Analysis Techniques ◽  
The Past ◽  
Spatio Temporal ◽  
Minqin Oasis ◽  
The Relationship

Ecological environment is the basis for human interdependence and development, so regional economic development must take into account the security situation of ecological environment and biocapacity. Based on the Ecological Footprint methodology, using remote sensing and GIS spatial analysis techniques, the biocapacity of Minqin oasis in Gansu in 1990, 2000 and 2009 was quantitatively calculated, and its spatio-temporal pattern analysis was also analyzed. The results showed：over the past two decades, there have been increasingly noticeable alterations to Minqin oasis; as a result, land reclamation activities have led to an increase in the areas of cropland, meaning that its biocapacity is rising, while the biocapacity of forest and pasture is decreasing. The biocapacity in space shows that the high-value area aggregation is augmented, there is an increased scope of area, and the focus of biocapacity has shifted. However, after 2000, with the water shortage, abandonment issues being highlighted and the aggravation of desertification, biocapacity has decreased, and additionally, the relationship between land and man has become strained. The changes of biocapacity are all closely linked with population growth, socio-economic development, agriculture structure, and water scarcity.

scholarly journals Environmental policy evaluation from the perspective of farmers' perception in arid oasis ecosystem: Experiences of Minqin, Northwest China

2017 ◽  
Vol 19 (2) ◽  
pp. 289-299
Keyword(s):  
Logistic Regression ◽  
Environmental Policy ◽  
Policy Evaluation ◽  
Arable Land ◽  
Policy Issue ◽  
Northwest China ◽  
Ordinal Logistic Regression ◽  
Gansu Province ◽  
Oasis Ecosystem ◽  
Minqin Oasis

Effective eco-environment rehabilitation is an essential policy issue in arid oasis ecosystem. Since 2007, a policy which focuses on environment restoration and protection was implemented in the Shiyang River Basin of Gansu Province, China. Using Minqin oasis as a case, the effectiveness of policy impacts based on farmers’ perception was evaluated. In addition, an ordinal logistic regression model was used to explore the potential factors affecting farmers’ perception of policy effectiveness. Data were collected from household heads or spouses and other adults (age>18) separately in a random sample of 425 households. The results showed that positive outcomes were achieved, however, two policy measures—the water restrictions and the ecological migration project—were rated at a low level of satisfaction by the farmers. Moreover, 11 determinants were extracted by the logistic regression method, and indicating that economic factors including the ownership of the arable land and the availability of household income turned out to be the most significant. The results can help to establish eco-environmental restoration targets, encourage investments, and lead to the development of more applicable methods for assessing policy effects from the perspective of smallholders in ecologically fragile areas all over the world. Keywords: Environmental policy evaluation; Farmers’ perception; Ordinal logistic regression; Minqin oasis; Northwest China

scholarly journals Inter-Regional Agricultural Virtual Water Flow in China Based on Volumetric and Impact-Oriented Multi-Regional Input-Output (MRIO) Approach

Water ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 251
Author(s):  
Yingying Ren ◽  
Kai Huang ◽  
Yajuan Yu ◽  
Jingru Hu
Keyword(s):  
Water Flow ◽  
North China ◽  
Water Footprint ◽  
Quantitative Description ◽  
Virtual Water ◽  
Water Shortage ◽  
Northwest China ◽  
Full Account ◽  
Virtual Water Flow ◽  
Net Export

Virtual water trading is an effective strategy to alleviate water shortage. Several different methods have been developed to achieve quantitative description and evaluation of virtual water, which can be broadly divided into volumetric and impact-oriented water footprint approaches. The former focuses on the consumption of water resources, while the latter puts greater emphasis on assessing the water use impacts. Based on the volumetric and impact-oriented water footprint, this paper conducted a comprehensive study on the virtual water flow of agricultural products among regions in China. The results show that different water footprint evaluation methods have different tendencies in evaluating virtual water flow. Volumetric virtual water mainly flows from northwest and northeast China to north and east China, while impact-oriented virtual water mainly flows from northwest and central south China to east and north China. Northwest China is the largest net export region of agricultural virtual water, and it is dominated by direct water consumption. In addition, we compared the net export volume of virtual water and the water shortage situation among regions in China. North China, where the water shortage is very serious, mainly relies on external water sources, while northwest China, which also faces a water shortage problem, exports a large amount of virtual water to external sources. The findings of this study highlight the importance of taking full account of the response measures in both cases when formulating policies. In other words, the virtual water strategy should consider water quantity and water quality simultaneously.

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