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Taking the water demand data from 2000 to 2011 of Shenyang City of Liaoning Province, this paper analyzes the main factors that influences the water resource quantity based on the principle component analysis method. The results show that agricultural population, non-agricultural population, effective irrigated area, industrial added value and precipitation are the primary indexes that affect the...
The observed annual river discharge of Yellow River has declined significantly in the past 30 years. The drying-up events impacted by global change has been recognized as a very important issue in China. It is important to study on water resources renewability to improve the current situation of water resources in Yellow River Basin. In view of the disadvantages of current evaluation methods, this...
Assessment the changes of surface water quality in different times throughout one year is an important aspect for evaluating temporal variation of river pollution due to natural or anthropogenic input of point and non-point sources to water environment that is gradually deteriorating. In this paper, principal component analysis & factor analysis (PCA & FA) is conducted according to the average...
Lots of hydrological and substance exchange indicate that environmental management from watershed perspective is very important to improve the ability of self-regulation of ecological system and ecological health in watershed scale. This paper takes Huntai river watershed as study region to assess the ecological health with remote sensing and Pressure-State-Response (PSR) model. Firstly, county is...
Based on the researches of water use efficiency in China and other countries, a water resource utilization efficiency assessment index system is proposed, which includes six kinds such as water use per 10,000 Yuan of GDP, removal variability of agriculture water resources utilization efficiency, per 10,000 Yuan of added industrial output value etc. By the cluster analysis of indicator data, it adopted...
The qualities of reclaimed water influence the security and suitability of agricultural irrigation largely, which could be represented by indices total salt content, ALK, LAS, coliform groups and TN. What is the rule of variation of water qualities? The method of principle component analysis (PCA) and analysis of variance (ANOVA) could give the best answer. The result showed not only total salt content,...
Lake Wuliangsuhai is typical shallow weedy lake in arid area in north of China. In this paper, Lake Wuliangsuhai is recognized as study area. The data of water quality from June to October in 2005 are analyzed using principal components analysis. The parameters about water quality of Lake Wuliangsuhai are generalized into sever principal components. They are index about characters of eutrophication,...
Water quality evaluation is an important basic work for the water environmental management and protection. This paper presents a new water quality monitoring method based on principal component analysis-wavelet neural network combined model. First, the establishment of water quality evaluation index system, and then using principal component analysis to remove the relevance, overlap information of...
Groundwater is important for people to live, environmental carrying capacity of groundwater is more important for industry and agriculture and people and the earth to exist and develop. On basis of the matter element theory, the fuzzy-matter element model based on informational entropy (FM-IE) is built by combining informational entropy and fuzzy theory and matter element & extension set; it is...
In this paper, based on the correlation analysis and by combining the principal component analysis, a correlation evaluation model-based principal component analysis is established. In the process of the water body evaluation eutrophication, a correlation analysis is conducted between the sample matrix and the standard matrix of the water body eutrophication evaluation. The sequence which has the...
The eco-environmental regionalization is a comprehensive division process based on the geographical differences of regional eco-environment status. Compared to the traditional method, spatial analysis is more and more used to get the main characteristic of the eco-environment before regionalization. In this paper, TM, SPOT and QuickBird images of 2000-2008 are taken as data sources. And using Remote...
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