• Title/Summary/Keyword: 경지정리

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모로코의 밭 관개사업과 경지정리

  • 김주영
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.25 no.4
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    • pp.12-17
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    • 1983

  • 20년전(年前)에 모로코에서 경지정리(耕地整理)와 관개조직(灌漑組織)의 배치(配置)에 관(關)한 모델이 개발(開發)되어 널리 사용(使用)되고 있다. '합리적(合理的) 배치법(配置法)'이라고 이름이 붙은 이 방법(方法)은 토지소유규모(土地所有規模)가 영세(零細)하고 여러가지 밭작물(作物)을 재배(栽培)하는 지역(地域)에서 현대적(現代的)인 농사법(農事法)과 윤환급수(輪環給水)를 하는데 적합(適合)한 방법(方法)이다. '합리적(合理的) 배치법(配置法)'은 다음 두가지의 다른 관개배치법(灌漑配置法)을 결합(結合)시킨 것이다. (1) 현대적(現代的) 집단농사(集團農事), 특(特)히 집단(集團) 경운(耕耘)을 주(主)로 한 농경기술자적(農耕技術者的)인 방법(方法), (2) 관개수로(灌漑水路), 배수로(排水路), 농도등(農道等)을 포함(包含)한 영구적(永久的) 포장관개조직(圃場灌漑組織)을 가진 관개공학기술자적(灌漑工學技術者的)인 방법(方法). 합리적(合理的) 배치법(配置法)은 분산(分散)된 여러개의 작은 필지를 통합(統合)하여 관개(灌漑)에 적합(適合)한 크기로 만드는데 관계(關係)되는 여러가지 요인(要因)을 다루어야 하며 필지의 크기, 지표(地表) 또는 스프링클러등의 관개방법, 작물(作物)의 종류(種類), 윤작(輪作), 농업(農業)의 기계화등(機械化等)이 이에 속(屬)한다. 이 방법(方法)을 적용(適用)한 지구(地區)에서 나타난 이점(利點)으로는 관개효율(灌漑效率)의 증가(增加), 수량(收量)의 증가(增加), 토지이용률(土地利用率)의 증가(增加), 현대적(現代的) 농사법(農事法)의 적용(適用) 증가등(增加等)이 있다.

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Automatic Extraction of the Land Readjustment Paddy for High-level Land Cover Classification (토지 피복 세분류를 위한 경지 정리 논 자동 추출)

  • Yeom, Jun Ho;Kim, Yong Il
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.32 no.5
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    • pp.443-450
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    • 2014

  • To fulfill the recent increasement in the public and private demands for various spatial data, the central and local governments started to produce those data. The low-level land cover map has been produced since 2000, yet the production of high-level land covered map has started later in 2010, and recently, a few regions was completed recently. Although many studies have been carried to improve the quality of land that covered in the map, most of them have been focused on the low-level and mid-level classifications. For that reason, the study for high-level classification is still insufficient. Therefore, in this study, we suggested the automatic extraction of land readjustment for paddy land that updated in the mid-level land mapping. At the study, the RapidEye satellite images, which consider efficient to apply in the agricultural field, were used, and the high pass filtering emphasized the outline of paddy field. Also, the binary images of the paddy outlines were generated from the Otsu thresholding. The boundary information of paddy field was extracted from the image-to-map registrations and masking of paddy land cover. Lastly, the snapped edges were linked, as well as the linear features of paddy outlines were extracted by the regional Hough line extraction. The start and end points that were close to each other were linked to complete the paddy field outlines. In fact, the boundary of readjusted paddy fields was able to be extracted efficiently. We could conclude in that this study contributed to the automatic production of a high-level land cover map for paddy fields.

  • https://doi.org/10.7848/ksgpc.2014.32.5.443 인용 PDF KSCI KPUBS HTML