Estimation of area ratios of small features in crop area obtained by remote sensing technique in Hebei Province
Estimation of area ratios of small features in crop area obtained by remote sensing technique in Hebei Province
Sun Li; W.Q.an; Zhang SongLing; Wang Fei
Transactions of the Chinese Society of Agricultural Engineering 22(2): 79-82
2006
Small features are key factors affecting crop area monitoring using remote sensing on a large scale. A stratified sampling method (reference) and a zonal sampling method were applied to process small features sampling frames in 99 croplands in Hebei Province, China, under different conditions. An estimation of the area ratios of small features of croplands obtained 10.15% in paddy field, 3.51% in plains, and 7.14% in sloping cropland.