Development scenarios on Hetao irrigation area (China): a qualitative analysis from social, economic and ecological perspectives

2014 ◽  
Vol 73 (2) ◽  
pp. 815-834 ◽  
Author(s):  
Lilin Kerschbaumer ◽  
Jan Felix Köbbing ◽  
Konrad Ott ◽  
Stefan Zerbe ◽  
Niels Thevs
Author(s):  
Rui Shi ◽  
Jixin Zhao ◽  
Wei Shi ◽  
Shuai Song ◽  
Chenchen Wang

Water quality is a key indicator of human health. Wuliangsuhai Lake plays an important role in maintaining the ecological balance of the region, protecting the local species diversity and maintaining agricultural development. However, it is also facing a greater risk of water quality deterioration. The 24 water quality factors that this study focused on were analyzed in water samples collected during the irrigation period and non-irrigation period from 19 different sites in Wuliangsuhai Lake, Inner Mongolia, China. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were conducted to evaluate complex water quality data and to explore the sources of pollution. The results showed that, during the irrigation period, sites in the middle part of the lake (clusters 1 and 3) had higher pollution levels due to receiving most of the agricultural and some industrial wastewater from the Hetao irrigation area. During the non-irrigation period, the distribution of the comprehensive pollution index was the opposite of that seen during the irrigation period, and the degree of pollutant index was reduced significantly. Thus, run-off from the Hetao irrigation area is likely to be the main source of pollution.


2021 ◽  
Vol 4 (2) ◽  
pp. 374-382
Author(s):  
Dasril Dasril ◽  
Bambang Istijono ◽  
Nurhamidah Nurhamidah

The prediction of water requirement is important in planning and managing irrigation system. Based on this case, this study aims to evaluate water requirement of irrigation to obtain the prediction of maximum value of water requirement. The research took place in Irrigation Area of Ampiang Parak at Pesisir Selatan Regency with the area was 2,363 hectares. The descriptive qualitative analysis approach was used to collect the data by using observation, interview and taking of primer and secondary data. The tabulation of data used Cropwat version 8.0 software to analyze water requirement values. The result of this research the calculation of water requirement values using Cropwat version 8.0 software are 4.772 m3/sec in MT 1, 4.770 m3/sec in MT 2, and 5.05 m3/sec in MT 3. The data shows that irrigation area may not have dryness. However, there is some area that is rainfed. Based on observation at Irrigation Area of Amping Parak there are leaking lines, and there are area irrigations that have not connected according to irrigation area of Amping Parak scheme.


2013 ◽  
Vol 25 (1) ◽  
pp. 115-118 ◽  
Author(s):  
WANG Xuan ◽  
◽  
LI Qingfeng ◽  
HU Yang ◽  
JIA Hongmei ◽  
...  

2021 ◽  
Vol 50 (1) ◽  
pp. 20190845
Author(s):  
Zuo Shen ◽  
Li Jin ◽  
Cui Xin-zhang ◽  
Yu Miao-zhang

2020 ◽  
Vol 8 (1) ◽  
pp. 36-53
Author(s):  
Anna Jupowicz-Ginalska

AbstractThe main purpose of this paper was to explore the media image of the COVID-19 pandemic through the perspective of Polish media polarisation. In order to achieve this, a quantitative and qualitative analysis of the content of covers from 10 socio-political magazines, representing different ideological inclinations [left-wing, liberal, conservative, right-wing and Catholic] was conducted between January and June 2020. The study focused not only on the scale to which the coronavirus appeared on the covers, but also on the textual and visual representation of it. Additionally, the contexts in which COVID-19 appeared were analysed. As it turned out, apart from the medical context, the pandemic was mostly presented through political, social, economic and religious perspectives, of which the first was the most visibly connected with polarising media content, indicating clear links between the ideological bias of the magazines and the ways they described reality.


2012 ◽  
Vol 212-213 ◽  
pp. 260-263
Author(s):  
Ying Hao Wang ◽  
Shuo Li

Hetao irrigation area in Inner Mongolia is one of the four major irrigation areas in China, seasonal frozen soil is widely distributed in this area. Irrigation channel engineering experiences seriously freeze-thaw cycle many times in the long winter, its maintenance is the important and difficult point all long in irrigation channel engineering of Hetao irrigation area. For this, we analyze the moisture migration and law of frost heave characteristics of seasonal frozen soil in Hetao irrigation area.


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