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首页> 外文期刊>Environmental Monitoring and Assessment >Environmental impact assessment (EIA) of hard rock quarrying in a tropical river basin-study from the SW India
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Environmental impact assessment (EIA) of hard rock quarrying in a tropical river basin-study from the SW India

机译：来自SW印度的热带河流域中的硬岩石采石场环境影响评估（EIA）

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摘要

The increase in demand of building stones and construction-grade sand has resulted in aggressive hard rock quarrying in many parts of the world. The problems are to be evaluated in detail for the judicious use of resources on the one hand and ensuring health of the ecosystems on the other. The present study aims to evaluate the impact of hard rock quarrying on one of the important twin - river basins in SW India, the Netravati-Gurpur river basin, which hosts the fast developing urban centre, the Mangalore city. A total of 64 hard rock quarries are located in the basin which together extracts about 6.75 million t y(-1)of rocks/rock products for different purposes. An assessment of the impacts of quarrying using the rapid impact assessment matrix (RIAM) reveals marginal, short-term positive impacts in economic-operational components but major negative impacts on all the other environmental components. The study indicates that the present intensity of quarrying is unsustainable with a sustainability index of - 0.25. Therefore, hard rock quarrying in the study area is to be strictly regulated for bringing down the river basin degradation to the barest minimum level and maximizing the ecosystem benefits to its full potential.
机译：建筑石头和建筑级砂的需求增加导致了世界上许多地区的侵略性的硬岩采石。有关一方面的可明智使用资源并确保生态系统的健康状况将详细评估这些问题。本研究旨在评估硬岩石采石队的影响，这是国内河河河流河流河流域的重要双河流域之一，举办了曼加拉尔市的快速发展城市中心。总共64个硬摇滚曲位于盆地中，为不同目的提取约675万吨（-1）岩石/岩石产品。利用快速影响评估矩阵（RIAM）对采石的影响的评估揭示了经济运营组件中的边际，短期积极影响，而是对所有其他环境组成部分的主要负面影响。该研究表明，目前的采石强度是不可持续的，可持续性指数为0.25。因此，在研究领域的硬岩石采石被严格受到严格调节，以使河流流域降低到最低水平，并最大限度地提高生态系统的益处。

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