Dynamic evaluation mode for ecological environment in irrigation based on theme classify and component technology

Chai Li1 Zhang Qing2 Xie Jiancang1 Liu Jianlong3 Jiang Rengui1

(1.State Key Laboratory of Eco-hydrologic Engineering in Northwest in the Arid Area, Xi’an University of Technology, Xi’an, China 710048)
(2.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China 100081)
(3.Henan Water & Power Engineering Consulting CO., LTD, Zhengzhou, China 450016)

【Abstract】To resolve the limitations of traditional method for evaluating ecological environment in the irrigation areas, a dynamic theme service model is proposed in this paper using information technology. The evaluation themes are identified according to the problems in the irrigation areas. The dynamical evaluation process of ecological environment in the irrigation areas based on theme service is established. To build the evaluation index library and develop the evaluation method component, the appropriate evaluation index is selected from the ecological environment evaluation index library in the irrigated areas according to the evaluation theme. The evaluation index system for specific evaluation theme is established after the optimization of indices. The evaluation theme knowledge map is drawn based on the comprehensive integrated platform, and the ecological environment dynamic evaluation system is established. The evaluation methods are determined according to the characteristics of the ecological environment evaluation theme and the evaluation index system. The corresponding component is invoked from the evaluation method component library to calculate the evaluation index for different themes, and realize the dynamic theme evaluation for the ecologic environment in the irrigation areas. Taking the Jinghuiqu irrigation areas in Shaanxi Province as the study case, four evaluation themes including the ecological environment influential factor theme, the resource utilization level theme, the engineering support capacity theme and the sustainability theme are determined based on the investigation situation and concerns of the management department in the irrigation areas, and the experts’ opinions. The results show that the ecological environment in the irrigation areas was between good and mediocre in 2009 and 2014, and the ecological environment situation in the irrigation areas decreased in 2014 compared with that in 2009; from 1997 to 2014, the utilization level of irrigation resources increased year by year, and each evaluation index developed to a healthy status year by year; the support capacity of irrigation district was mediocre in 2014, and it tended to be good; the result of irrigation district sustainability evaluation was good in 2014. As the results show, the service model can achieve dynamic evaluation of ecological environment of irrigation areas quickly with multi-angle view and the evaluation result is more credible, so it has more advantages compared to the traditional evaluation method. Using the information technologies, the paper introduces a dynamic evaluation model for the ecological environment in the irrigation areas based on the comprehensive integrated platform, and the results of the paper are of great significance for the healthy development of the ecological environment and ecological civilization construction in the irrigation areas.

【Keywords】 ecology; environmental management; theme service; dynamic evaluation; Jinghui Canal irrigation areas;

【DOI】

【Funds】 National Key Research and Development Program of China (2016YFC0401409) National Natural Science Foundation of China (51509201, 51679188) China Postdoctoral Science Foundation (2016M590964) Young Talent Fund of University Association for Science and Technology in Shaanxi, China (20160217)

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This Article

ISSN:1002-6819

CN: 11-2047/S

Vol 33, No. 24, Pages 174-181

December 2017

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Article Outline

Abstract

  • 0 Introduction
  • 1 Connotation of ecological environment health in the irrigation areas
  • 2 Dynamic evaluation of ecological environment in the irrigation areas
  • 3 Application cases
  • 4 Conclusions
  • References