• 대한환경공학회지
• /
• 제32권5호
• /
• pp.487-498
• /
• 2010

기존 제설제인 염화칼슘($CaCl_2$)과 유기산 제설제 EFD(Eco-Fridendly Deicer)가 식물의 생존과 생장에 미치는 영향을 파악하였다. 도로주변의 주요 자생종인 소나무와 참싸리 그리고, 재배종인 열무와 강낭콩 유식물에 대하여 제설제의 농도 구배에 따른 생존과 생장반응을 분석하였다. 네 종중에서 참싸리는 제설제에 가장 민감한 생존반응을 보였다. 소나무의 생장은 제설제 종류와 농도변화에 통계적 유의성을 보이지 않았다. 참싸리와 강낭콩의 경우는 $CaCl_2$와 EFD1의 3%이상의 농도에 생장저해를 보였으나, EFD2에 대해서는 생장이 양호했다. $CaCl_2$에 대한 생존 및 생장반응으로 확인된 염에 대한 내성이 있는 식물은 열무와 소나무이었고, 민감한 식물은 참싸리와 강낭콩이었다. 화학약품으로 제조한 EFD1은 식물생장의 저해영향이 컸지만, 음식물쓰레기를 활용한 EFD2는 염에 내성이 약한 식물들에게도 생존 및 생장의 피해가 적음을 확인하였다.

• Journal of Ecology and Environment
• /
• 제31권1호
• /
• pp.23-29
• /
• 2008

The effectiveness of rehabilitation programs for coal mining spoils in Samcheok, Jeongsun, and Mungyung were evaluated based on the physicochemical properties of soil in the rehabilitated areas. These spoils were reclaimed by introducing plants such as black locust (Robinia pseudoacacia), pitch pine (Pinus rigida), birch (Betula platyphylla var. japonica), alder (Alnus hirsuta), bush clover (Lespedeza cyrtobotrya), and grass (Lolium perenne) in planting beds covered with forest soil. In the surface soil, the pH, organic matter, total N, available P, and exchangeable Ca showed significant changes over the years after reclamation. The pH and exchangeable Ca content decreased exponentially over time, whereas organic matter increased linearly and total N and available P increased exponentially. Changes in the physicochemical properties of subsurface soils displayed a different pattern. There were significant changes over time in the organic matter, available P, and exchangeable Ca and Mg contents of the soil. Organic matter increased logarithmically with years since rehabilitation and available P increased exponentially. Meanwhile, exchangeable Ca decreased exponentially, and Mg decreased logarithmically. The changes in the subsurface soil were not as dramatic as those in the surface soil. This result suggests that the ameliorating effects of the establishment and growth of plants more pronounced on the surface soil layer. Stand ordination data showed different relationships with time since rehabilitation in the early and later stages of the rehabilitation process. In the early stages of rehabilitation, stands tended to be arranged in the order of reclamation age. However, in the later stages, there was not a clear relationship between reclamation age and vegetation characteristics. This result suggests that soil amelioration is required for the early stages, after which an autogenic effect becomes more prominent as the vegetation becomes better established.