탄소축적을 고려한 수변완충지대 적정설계 방안

Abstract

Riparian areas are transitional zone between various water features that contain water for some period of time a year and its uplands. They control adjacent river flow, store water in the watershed and remove unwanted contaminants form surrounding non-point sources. They can provide habitats for aquatic and terrestrial plants and animals, and accumulate carbon. In this study, when create riparian area propose riparian buffer zones considering both carbon sequestration and pollution reduction. This study site is Nakbon K that include the Samrangjin of Milyang city to Mulgeum of Yangsan city. The minimum buffer widths were calculated using riparian buffer width model. On the other hand, using soil drainage, slope, elevation and land use maps were calculated possible area to create wetland. We also simulated the carbon sequestration based on IPCC guideline when planting a coniferous forest, broad-leaved forest, mixed forest and grassland, and the ones when wetland such as swamp and marsh, separately, created in the chosen area. From the result, we found out that the required riparian area was a range from 30 to 300m, and the optimal average width for each area was estimated as 34m. The Sogam stream was revealed to have the most width riparian buffer strips of an estimated 52m, of which the total potential riparian area was about, 1,775.51ha. As a result, we noticed that a broad-leaved forest the highest , whose capacity is equivalent to the carbon emission from 5,500 automobile. In addition, area for wetland creation was 266.85ha. Among them, wetland including swamp and marsh are expected to embrace 544.77tC and 7,086.99tC, respectively. They can emit to offset the carbon from 250 and 3,300 automobile. Based on the study, planting woody plants in riparian area and other wetland is expected to make huge contributions to carbon sequestration if Above all, a broad-leaved forest is deemed to have the highest efficiency for carbon sequestration.