남강의 연만대 습지에서 교란지와 비교란지의 식생구조와 환경요인의 비교 = Comparison of Vegetation Structure and Environmental Factors between the Disturbed and Undisturbed Wetlands around the Littoral Zone of Namgang

다국어 초록 (Multilingual Abstract)

The flora, vegetation structure, distribution 01 the vascular plants, physico-chemical characteristics 01 sediment, and nutrient contents of palnts were investigated in the ten di sturbed and undisturbed wetlands around the littoral zone of Namgang, Jinju-si, Gyongsangnam-do, Korea from August 7 to August 15 in 1999. 217 taxa of the vascular plants distributed into 2 formas，26 varieties, 189 species belong to 142 genera under 52 families were sampled or recorded. Dominant species of the undisturbed and the disturbed area were Persicaria thunbergii and Ambrosia artemisiifolia var. elatior, of which importance values were 13.86, and 15.81, respectively. Among 26 species of the naturalized plants, importance value of Ambrosia artemisiifolia var. elatior was highest as 9.54. The ranges of species diversity indices (H' ) were 1.370 - 1.819, and highest in the site 1 of the undisturbed area. The ranges of eqitability (j' ) were 0.779-0.902, and highest in the site 8 of the disturbed area. The ranges of community similarity indices (CCs) were 0.341-0.578 among the ten wetlands, and highest between site 1 and site 2 which were the undi sturbed area. The ranges of sediment properties such as pH, conductivity, organic matter, total phosphorus, and total nitrogen were 5.17 -7.35, 24 .67 -74.33 μ mhocm-1, 1.09-3.82% , 0.0008-0.0034 mg/100g, and 0.06-0.15%. respectively. Nutrient contents of plants such as total nitrogen and total phosphorus were 1.52-2.65% and 0.010-0.039mg100g1, respectively. It was recommended that the establishment of the conservation area was necessary to ensure the habitat for wild life and to maintain the diversity of the vascular hydrophytes and hygrophytes.