주암호 복내천 인공습지 조성 후 식물의 생활형에 대한 4년간의 변화 연구 = Four-year Survey on Transitions of the Life Form of Plants after Developing Human-made Wetlands along Boknaecheon of Juam Lake

국문 초록 (Abstract)

본 논문은 주암호 복내천 인공습지 조성 후 4년간 식물 변화를 Numata식의 생활형을 이용하여 분석하였다. 2002년 12월에 준공된 주암호 복내천 인공습지의 식재종은 10과 13속 12종 3변종으로 총 15종류가 식재되었다. 식재종의 3가지 성질의 생활형을 보면 휴면형(Dormancy form)은 다년생수생식물(HH)이 6종으로 가장 많고, 지하기관형은 R5, R3, R2-3이 각각 4종, 산포기관형은 풍수산포형(Dl)이 10종, 생육형은 직립형(e)이 가장 많았다. 인공습지 준공 후 5년이 경과된 모니터링의 최종년도에 조사된 3가지 성질의 생활형은 종수와 개체수는 증가하였으나 생활형 구성비(%)에 대한 경향성은 큰 변화는 없었다. 휴변형은 1년생육상식물(Th)이 43종, 24.29%, 지하기관형은 R5가 산포기관형은 D4형과 Dl형, D1,4형이 전체의 77.39%를 차지하고 있었다. 생육형은 직립형(e), 총생형(t), 일시적로제트형(pr), 분지형(b), 로제트-직립형(ps) 순으로 조사되었으며, 이들 종들이 전체의 64.97%를 차지하고 있다. 결과적으로 주암호 복내천 인공습지의 경우 휴면형은 천이가 진행될수록 다년생식물의 구성비율이 높아 습지 천이의 선구종들인 1년생식물이 우점하는 식생형이 점차적으로 안정된 다년생 습지식생의 유형으로 천이가 진행되고 있음을 알 수 있다. 번식형은 지하기관형인 단립식물(R5)이 우세하나 달뿌리풀 등과 같은 땅위에 연결체를 만드는 R4식물로 천이가 진행될 것으로 보이며, 산포기관형은 습지의 특성상 바람이나 물에 의하여 운반되는 풍수산포형과 수변 목본식물의 발달로 인한 중력산포형이 유리할 것으로 판단된다. 생육형은 습지의 경우 총생형이 우세할 것으로 판단되며 육상은 인위적·자연적 교란에 의하여 다양한 유형의 생육형이 공존할 것으로 판단된다.

다국어 초록 (Multilingual Abstract)

Employing the Numata-type life form, the paper analyzed changes of plants for 4 years at the Human-made Wetlands along Boknaecheon of Juam Lake since its creation. The number of the species planted at the Human-made Wetlands along Boknaecheon of Juam Lake, which was completed in December 2002, were 15 in total including, 10 families, 13 genera, 12 species and 3 varieties. As for the three-featured life forms of the planted species, there were 6 perennial hydatophytes, recording the biggest number of species in dormancy form; species each of R5, R3, R2-3 respectively in radicoid from; 20 species of geomantic dissenminule form (Dl) in disseminule form and erecred type(e) existed the most in growth form. With regard to the 3 features of life form identified during the final year of the monitoring that lasted 5 years after the completion of the Wetlands, the number of species and individuals was found to have increased but there was no significant change of tendency as against the composition ration(%) of life form. There were 43 species of therophytes (Th) that covered 24.29% in dormancy form, while R5 was prevalent in radicoid form and D4, Dl, and Dl, 4 comprosed 77.39% of the whole disseminule form. Growth form was surveyed in the order of erected type (e), bunch type (t), temporal rosette type (pr), branch type (b) and straight rosette type (ps) and these species comprised 64.97% of the whole flora. Consequently, in case of the artificial wetlands along the Boknaecheon of Juam Lake, it turned out that the vegetation type in which pioneer species of succession, or gradually stabilized perennial vegetation favoring Wetlands because the higher dormancy form has its perennial plants` composition ratio getting, the more its succession is progressing. Even though single grained plants (R5) belonging to radicoid in breeding form, succession is predicted to take place considering the fact that they actually belong to R4 plants like Phragmites japonica that form a connection on the surface of the earth. In addition, it is judged that geomantic disseminule form (Dl) conveyed by water and gravitational disseminule form favored by the development of waterside woody plants (D4) seem to be better fit to this area in desseminule form. As for growth form, bunch type (t) is judged to become prevalent on the Wetlands while a good variety ofphanerophytes will coexist on the earth due to artificial as well as natural disturbances.

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