Improvement of Weakness Evaluation Item of Environmental Conservation Value Assessment Map (ECVAM) for the Integrated Management of Land and Environmental Planning

An advanced environmental information system is essential for the sustainable conservation and management of national land, leading to the increased utilization of the Environmental Conservation Value Assessment Map (ECVAM). However, following the scale enhancement to 1:5,000 in 2021, the Weakness evaluation item has included unsuitable data, resulting in an overestimation of grade 5 areas. This study aims to refine the Weakness evaluation item by revising the data used, focusing on the Chungcheongnam-do(CN) region. A revised model was developed by extracting only areas where Urban areas and Planned Management areas of Zoning District and Urbanized Areas of Land Cover(level 3) overlap, excluding previously included data such as farm roads, drainage ditches, and forest paths within Land Cover(level 3). As a result, the proportion of grade 5 areas decreased by 17.78 percentage points, while non-graded areas increased by 14.74 percentage points, indicating a more accurate reflection of the current conditions. Cross-comparison with other environmental and ecological indicators confirmed the relevance of the improved assessment. The revised model was found to maintain consistency within the ECVAM. This study enhances the accuracy and completeness of the Weakness evaluation item, supporting the utility of ECVAM and contributing to sustainable environmental land management.

 

This paper was supported by Technology Development Project for Creation and Management of Ecosystem based Carbon Sinks (RS-2023-00218243) through KEITI, Ministry of Environment.