PARENT SESSION
Poster Session 24: Agro-Ecology
Wednesday, August 10, 5:00 PM - 6:30 PM, Exhibit Hall 220 A-E, Level 2, Palais des congrès de Montréal

The Quality of Water and Distribution of Vegetation.

Kim, Sung Pil^*,1, Oh, Yong Ju¹, Han, Min Su¹, Na, Young Eun¹, Kim, Jin Ho¹, ¹ National Institute of Agricultural Science and Technology, RDA, Suwon, Rep.of Korea

ABSTRACT- The land use pattern, water quality, and vegetation were investigated in the six tributaries, including Hanggumcheon and Satancheon of the Namhan hydrosphere and Iksancheon, Jeonjucheon, Gosancheon of the Mankyung hydrosphere and Jongupcheon of the Dongjin hydrosphere. Forest and farmland area were extensive in Hanggumcheon, Satancheon and Gosancheon. Farmland and livestock area were wide in Iksancheon and Jeonjucheon were occupied with broad city. Industrial and city area were extensive in Jongupcheon. The loading amounts of biochemical oxygen demand(BOD), total nitrogen(T-N), total phosphorus(T-P) of Iksancheon and chemical oxygen demand(COD) of Jeonjucheon were determined to be very high, respectively. The quality of water in Hanggumcheon, Satancheon and Gosancheon were determined to be good quality. The species diversity and richness was lower in the down stream than in the upper stream except for the Gosancheon. Life form of plants were mostly perennial plants in the upper stream and annual plants in the down stream of rivers. Relative naturalized degree(RND) in the down stream of rivers were investigated higher than RND in the upper stream except for the Iksancheon. It was estimated that there is high level of disturbance in the down stream of rivers. The quality of water was significantly correlated with Farmland and Forest area. In conclusion, human impacts, such as farmland and housing lot, exerted an influence on the disturbance of down stream and the water quality of rivers.

Key words: water quality, vegetation