Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Comparison Between Methods for Suitability Classification of Wild Edible Greens

산채류 재배적지 기준설정 방법 간의 비교 분석

  • Received : 2010.06.21
  • Accepted : 2010.10.22
  • Published : 2010.10.30
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Abstract

The objective of this study was analysis of two methods of land suitability classification for wild edible green. One method was Maximum limiting factor method (MLFM) and the other was Multi-regression method (MRM) for land suitability classification for wild edible green. The investigation was carried out in Pyeongchang, Hongcheong, Hoeingseong, and Yanggu regions in Korea. The obtained results showed that factors related to the decision classification of the land suitability for wild edible green cultivation were land slope, altitude, soil morphology and gravel contents so on. The classification of the best suitability soil for wild edible greens were fine loamy (silty), valley or fan of soil morphology, well drainage class, B-slope (2~7%), available soil depth deeper than 100cm, and altitude higher than 501m. Contribution of soil that influence to crop yields using Multi-regression method were slope 0.30, altitude 0.22, soil morphology 0.13, drainage classes 0.09, available soil depth 0.07, and soil texture 0.01 orders. Using MLFM, area of best suitable land was 0.2%, suitable soil 15.0%, possible soil 16.7%, and low productive soil 68.0% in Hongcheon region of Gangwon province. But, area of best suitable land was 35.1%, suitable soil 30.7%, possible soil 10.3%, and low productive soil 23.9% by MRM. There was big difference of suitable soil area between two methods (MLFM and MRM). When decision classificatin of the land suitability for wild edible green cultivation should consider enough analysis methods. Furthermore, to establishment of land suitability classification for crop would be better use MRM than MLFM.

산채류 주산단지인 강원 평창, 홍천, 횡성, 양구 등 4개 지역 53농가포장을 중심으로 실시한 세부정밀토양 조사 결과에 의해 밝혀진 토성, 배수등급, 유효토심, 지형, 경사, 자갈함량, 해발 등의 토양특성과 산채류 수량을 통하여 작물재배적지기준 설정방법인 최대저해인자법과 다변량분석법의 두 가지 방법을 비교분석하였다. 산채류재배지의 수량과 토양의 형태 및 물리적특성을 비교하여 보면 토성 (미사)식양질, 유효토심은 >100 cm, 경사는 2~15%, 지형은 곡간 및 선상지, 해발 500 m이상인 토양에서 수량이 가장 높았다. 토양특성과 산채류 수량에 미치는 기여도산출결과 경사 0.30, 해발 0.22, 지형 0.13, 배수등급 0.09 등 순으로 나타났다. 강원도 홍천군을 대상으로 최대저해인자법을 이용하여 산채류재배적지기준을 적용한 결과 최적지 0.2%, 적지 15.0%, 가능지 16.7% 그리고 저위생산지 68.0%로 나타났다. 그러나, 다변량분석법을 이용하여 산채류재배적지기준을 적용한 결과 최적지 35.1%, 적지 30.7%, 가능지 10.3%, 저위생산지 23.9%로 나타나 두 방법간에 많은 차이가 있었다. 따라서, 작물재배적지기준을 설정할 때 분석방법을 충분히 고려하여 기준을 설정할 필요가 있고, 앞으로 작물재배적지기준설정시 다변량 분석에 의한 방법을 적극 활용하는 것이 좋을 것으로 판단된다.

Keywords

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