자연습지 및 인공습지와의 비교를 통해 본 계단식 묵논습지의 식생 특성 Vegetational characteristics of abandoned paddy terraces in comparison with natural and constructed wetlands원문보기
계단식 묵논습지의 식생 특성을 이해하기 위하여, 계단식 묵논습지의 식물종 구성 및 종풍부도 양상을 대상으로 자연습지 및 인공습지와의 비교연구를 수행하였다. 달뿌리풀은 자연습지(10.8%)나 인공습지(10.8%)에 비해 계단식 묵논습지(23.9%)에서 상대적으로 자주 관찰된 반면, 갈대는 계단식 묵논습지(18.3%) 보다는 자연습지(43.1%)나 인공습지(35.4%)에서 보다 높은 비율로 출현하였다. 부들의 경우 계단식 묵논습지(19.7%)에서만 높은 비율로 출현한 반면, 애기부들의 경우 자연습지(21.5%)와 인공습지(32.3%)에서 상대적으로 높은 비율을 보였다. 그와 더불어, 나도겨풀, 미나리, 그리고 개발나물과 같은 몇몇 습지 의존성 식물들의 경우 오직 계단식 묵논습지에서만 관찰되었다. 특히, 계단식 묵논습지($6.3{\pm}2.2$ 종/$m^2$)는 자연습지($4.9{\pm}1.8$ 종/$m^2$) 및 인공습지($3.9{\pm}1.3$ 종/$m^2$)에 비해 상대적으로 높은 수준의 식물 종풍부도를 나타내었다. 즉, 계단식 묵논습지는 특유의 식생 특성을 나타내었을 뿐만 아니라 종풍부도 차원에서 보다 높은 수준의 생태적 가치를 보인 것이다. 비오톱으로서 계단식 묵논습지가 갖는 높은 생태적 가치에 대한 계속적인 관심과 더불어, 이를 유지관리하고 보전하기 위한 차원에서의 지속적인 노력이 필요할 것이다.
계단식 묵논습지의 식생 특성을 이해하기 위하여, 계단식 묵논습지의 식물종 구성 및 종풍부도 양상을 대상으로 자연습지 및 인공습지와의 비교연구를 수행하였다. 달뿌리풀은 자연습지(10.8%)나 인공습지(10.8%)에 비해 계단식 묵논습지(23.9%)에서 상대적으로 자주 관찰된 반면, 갈대는 계단식 묵논습지(18.3%) 보다는 자연습지(43.1%)나 인공습지(35.4%)에서 보다 높은 비율로 출현하였다. 부들의 경우 계단식 묵논습지(19.7%)에서만 높은 비율로 출현한 반면, 애기부들의 경우 자연습지(21.5%)와 인공습지(32.3%)에서 상대적으로 높은 비율을 보였다. 그와 더불어, 나도겨풀, 미나리, 그리고 개발나물과 같은 몇몇 습지 의존성 식물들의 경우 오직 계단식 묵논습지에서만 관찰되었다. 특히, 계단식 묵논습지($6.3{\pm}2.2$ 종/$m^2$)는 자연습지($4.9{\pm}1.8$ 종/$m^2$) 및 인공습지($3.9{\pm}1.3$ 종/$m^2$)에 비해 상대적으로 높은 수준의 식물 종풍부도를 나타내었다. 즉, 계단식 묵논습지는 특유의 식생 특성을 나타내었을 뿐만 아니라 종풍부도 차원에서 보다 높은 수준의 생태적 가치를 보인 것이다. 비오톱으로서 계단식 묵논습지가 갖는 높은 생태적 가치에 대한 계속적인 관심과 더불어, 이를 유지관리하고 보전하기 위한 차원에서의 지속적인 노력이 필요할 것이다.
To understand vegetational characteristics of abandoned paddy terraces (APTs), species composition and plant species richness of APTs were compared with those of other natural- and constructed wetlands (NWs and CWs, respectively). Based on frequency of major vegetational components, Phragmites japon...
To understand vegetational characteristics of abandoned paddy terraces (APTs), species composition and plant species richness of APTs were compared with those of other natural- and constructed wetlands (NWs and CWs, respectively). Based on frequency of major vegetational components, Phragmites japonicus was more common in APTs (23.9%) than NWs (10.8%) and CWs (10.8%), whereas P. australis was less frequent in APTs (18.3%) than NWs (43.1%) and CWs (35.4%). Typha orientalis was common only in APTs (19.7%), whereas T. angustifolia was relatively common in NWs (21.5%) and CWs (32.3%). In addition, some wetland obligate species such as Leersia japonica, Oenanthe javanica, and Sium suave were frequently found only in APTs. In particular, APTs showed higher plant species richness ($6.3{\pm}2.2\;species/m^2$) than NWs ($4.9{\pm}1.8\;species/m^2$) and CWs ($3.9{\pm}1.3\;species/m^2$). APTs exhibited not only their distinctive vegetational characteristics but also higher ecological value in terms of plant species richness. Further attention on APTs as valuable biotopes supporting diverse plant species and continuous effort for management and conservation are needed more.
To understand vegetational characteristics of abandoned paddy terraces (APTs), species composition and plant species richness of APTs were compared with those of other natural- and constructed wetlands (NWs and CWs, respectively). Based on frequency of major vegetational components, Phragmites japonicus was more common in APTs (23.9%) than NWs (10.8%) and CWs (10.8%), whereas P. australis was less frequent in APTs (18.3%) than NWs (43.1%) and CWs (35.4%). Typha orientalis was common only in APTs (19.7%), whereas T. angustifolia was relatively common in NWs (21.5%) and CWs (32.3%). In addition, some wetland obligate species such as Leersia japonica, Oenanthe javanica, and Sium suave were frequently found only in APTs. In particular, APTs showed higher plant species richness ($6.3{\pm}2.2\;species/m^2$) than NWs ($4.9{\pm}1.8\;species/m^2$) and CWs ($3.9{\pm}1.3\;species/m^2$). APTs exhibited not only their distinctive vegetational characteristics but also higher ecological value in terms of plant species richness. Further attention on APTs as valuable biotopes supporting diverse plant species and continuous effort for management and conservation are needed more.
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제안 방법
In order to compare vegetational characteristics of three different types of wetlands (APTs, NWs, and CWs), a total of 28 wetlands belonging to 22 administrative districts were selected as study sites (Table 1). The study sites were divided into three types of wetlands based on relevant literature (Byun et al., 2008; Hong et al., 2012, 2014; Min et al., 2012; Hong and Kim, 2013b; Park et al., 2013; Nam et al., 2014; Hong et al., 2019b), information by local governments, outer appearances, and private conversation with local people: APTs as naturalized marshes (n = 8), NWs (n = 12), and CWs (n = 8). Most wetlands were classified as a marsh type, in which herbaceous species are more frequent and dominant than tree species (Table 1).
The surveys were performed based on different growing seasons of study sites from June at relatively high latitude and/or altitude areas to October at relatively low latitude and/or altitude areas. A total of 201 experimental quadrats (APTs, n = 71; NWs, n = 65; CWs, n = 65) were randomly set on study sites with intervals at least 5 m between quadrats to avoid duplicating data particularly under homogeneous vegetational covers by monotypic occupation.
대상 데이터
In order to compare vegetational characteristics of three different types of wetlands (APTs, NWs, and CWs), a total of 28 wetlands belonging to 22 administrative districts were selected as study sites (Table 1). The study sites were divided into three types of wetlands based on relevant literature (Byun et al.
이론/모형
The taxonomic nomenclature designated by Lee (2003) and the Korean plant names index (KPNI, http://www.nature.go.kr) were used to identify all recorded plant species from the field survey. In particular, ranked species (over 10% in frequency) were determined based on frequency values of all species depending on wetland types to compare major vegetational components of three different wetland types.
성능/효과
The surveys were performed based on different growing seasons of study sites from June at relatively high latitude and/or altitude areas to October at relatively low latitude and/or altitude areas. A total of 201 experimental quadrats (APTs, n = 71; NWs, n = 65; CWs, n = 65) were randomly set on study sites with intervals at least 5 m between quadrats to avoid duplicating data particularly under homogeneous vegetational covers by monotypic occupation. The areas with an average water level of < 0 cm or > 200 cm were excluded from the survey to meet the purpose of the study.
A total number of 162 plant species were recorded throughout 28 wetlands (Appendix 1). Among the 162 plant species, 19 species were ranked as major vegetational components based on frequency of each species (over 10% in frequency) (Table 2). In addition, APTs also showed a higher value in the number of ranked species (> 10% in frequency) than NWs and CWs.
후속연구
In particular, both species composition and plant species richness as vegetational characteristics were compared to verify the potential value of APTs as a biotope type. This study might provide meaningful information not only for a better understanding of vegetational characteristics of APTs but also for managing and conserving APTs as valuable biotopes.
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