| This thesis is based on the environmental impact account of the item that can produce 2000 thousands of raw material of cement every year, which developed and managed by Philippines Zion exploration corperation in individual proprietorship . By referring to the related technique cultural heritage and incorporation with the environmental impact practice of oneself, the paper was refined.Digging the mine resources makes the construction or appearance of original ecosystem environmented bigness's variety is take placed, especially open- air mine digging result in the breakage of the partial environment landscape, accelerated artificially material circulating process in the environment, and result in the pollution of the environment. As the important raw mine or rock material , most of limestone is open- air to mine, and the large quantity ore digging result in the environment to the big influence.the development of ore mountain have the the landscape ecology effect, the town effect, the corridor effect, the district ecosystem influence effect, the polluted ecosystem effect ,and so on .It will result in the artificial impact to the natural and social environment.Its main ecosystem environmental influence Include: Ecosystem system transformation, the ground form vary and the natural disaster, the problem of water resources affect, theproblem of pollution etc.. The influence environment include the production scale to mine and the way with mine district.The ecosystem environment affects evaluation should make the integral whole consideration with ecosystem environment and resources, pay attention to science, give prominence to aim , and insist the policy, coordination, look to possibility, and should carry out under the strategy of sustainable develop.Main contents that ecosystem environment influence evaluation technique plan include identifying of ecosystem influence, making sure the evaluate grade, investigating , analyzing and evaluating ecosystem environment present condition, evaluating ecosystem environment affect etc., the evaluating of affect include the factor , object and effect of affecting to analyze etc..According to the natural attribute and social characteristic of the limestone mine ecosystem environment, the index system of environment influence evaluation of limestone mine development is divided into the natural environment subsystem and the social milieu subsystem in this text, and certain the proportion of each index sign. Natural ecosystem environment subsystem is constituted by following 11 index signses: landform, erosion of land , headwaters self- restraint, turbid flow, floral cover degree, wildlife, water pollution, soil contamination, farm crop pollution, air pollution, air degree of humidity; The subsystem of social ecosystemenvironment is constituted by following 7 index signses: Water resources utilization, land utilization, efficiency make use of land, citizen to produce the gross worth, foundation facilities, town level, human body health.Contrast numerical value of the ecosystem environment present condition and influence evaluating, limestone mine can result in certainly negative influence to local ecosystem environment, make the mine quantity of total ecosystem environment have slightly descent, but seeing from the environment quantity ratings standard, mine ecosystem environment quantity still keep within the scope of good.Core that mine ecosystem instauration is a land recover with plant, but the most important land cover ' s ecology principle, is an ecosystem succession. The measure of the mine ecosystem manage and recover include the manage of mine mullock field and the mine ecosystem recover. The measure mine mullock field to manage include the fountain manage, the division of water and soil, setting up the block soil dam the etc.; the mine ecosystem recover engineering generally include the engineering to recover to recover two stages with living creature. Core that the engineering recover is according to the landform that the opencast become to a... |
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