Studies On The Ecological Security Of Water Resource For Jishou Area In Hunan Province

The ecological security of water resources status of Jishou is analyzed in this paper. The indicators system for water resources ecological security evaluation of Jishou is established. The math model to evaluate the ecological security of water resources is put forward. A software for evaluating the ecological security of water resources in Jishou is developed, and the measurements coresponding to the evaluation result is given. The main contents of this paper are put forward as follows:1. Viewing from the ecological security of water resources, the status of water resources composing, distributing and demanding in Jishou is surveyed and analyzed in detail.2. Based on the actual situation of water resources ecological security of Jishou, the ecological security evaluation indicators system of water resources of Jishou is established. According to Analytic Hierarchy Process(AHP) method, and based on the evaluation target segmental correlation, the compound evaluation indicators system is constructed undering the concept model of "Pressures-States-Responses (P-S-R)". And the water resources evaluation indicators system of ecological security is reduced to aim layer, restrict layer, basic layer and index layer.3. The math model and software for water ecological security evaluation is developed. Establishing every indicator difference indicator weighting, indicator ecological security index and limit gene computational math model of accounting indicator system , which is for bringing forward analysis and changing measure offered theory gist of water resources ecological security status of Jishou.4. The status of water resources ecological security of Jishou is evaluated, and the impacts of indicators to water resources ecological security is analyzed, and the corresponding measures of water resources ecological security are put forward at last.The content of this paper has reference value in establishing countermeasure for water resources ecological security of Jishou city in a certain extent. At the same time, the security satus of water resources ecological of Jishou city and its evaluation indicators need to be researched in a further step.