인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
Landsat Thematic Mapper-derived, seasonal NDVI profile data were analyzed to classify cropland types in Kansas. Unsupervised image classification approach showed that cropland acreage did not deviate more than 10 percent from the USDA survey data in sixty-eight counties across the state. Four main cropland types, including wheat, summer row crop, fallow, and alfalfa, were identified based on their phenological characteristics of NDVI over the growing season. Accuracy assessment was performed on the acreage of each cropland type and its spatial distribution. Regarding acreage, the classification underestimated wheat and alfalfa and overestimated summer row crops and fallow areas. Except for some confusion between wheat and alfalfa, the crop identification accuracy values ranged from 78.8 to 100 % for a producer’s accuracy and from 58.8 to 98.3 % for a user’s accuracy with an overall accuracy as high as 93.5 %.
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목차
등록된 정보가 없습니다.
참고문헌
참고문헌 신청최근 본 자료
UCI(KEPA) : I410-ECN-0101-2022-981-001615487