国土资源遥感Issue(3)：24-30,7.DOI:10.6046/gtzyyg.2014.03.04
水浇地与旱地春小麦冠层高光谱反射特征比较
Comparative study of canopy spectral reflectance characteristics of spring wheat in irrigated land and dry land
摘要
Abstract
Canopy data from hyperspectral remote sensing of irrigated land and dry land at different growth stages were used to analyze the difference between irrigated land and dry land. According to the bands of TM image,the measured spectrum was divided into four bands,the comparison of the spectra between irrigated land and dry land at each band was made and, on such a basis, the best band to identify irrigated land and dry land for spring wheat was chosen. The results show that canopy spectral reflectance in the visible region and in the near-infrared region of spring wheat has complete variation regularity:at the first band,the order is sunny land>double-sided land>shady land>irrigated land,which is opposite to the things of the near-infrared band. From setting to milk stage, in the visible band, spring wheat of irrigated land and dry land shows the order of setting stage >milk stage >jointing stage>heading stage>flowering stage;in the near-infrared band, the order is flowering stage>heading stage>jointing stage>setting stage>milk stage. The spectral curves are different because of chlorophyll content and coverage. In the visible band,spectral curves of spring wheat at setting and milk stage have their own lines but become two lines in the middle period; i. e. ,sunny land and double-sided land are completely coincident with each other,whereas shady land and irrigated land are basically coincident with each other. The spectral range of 760~900 nm is the optimal band for identifying spring wheat in irrigated land and dry land.关键词
水浇地/旱地/春小麦/冠层光谱反射特征Key words
irrigated land/dry land/spring wheat/canopy spectral reflectance characteristics分类
信息技术与安全科学引用本文复制引用
靳彦华,熊黑钢,张芳..水浇地与旱地春小麦冠层高光谱反射特征比较[J].国土资源遥感,2014,(3):24-30,7.基金项目
国家自然科学基金项目“新疆天山北坡人类活动影响下绿洲水盐耦合关系与环境效应冶(编号:41171165)、北京联合大学人才强校计划项目(编号:BPHR2012E01)和北京市属高等学校高层次人才引进与培养计划项目(编号：IDHT20130322)共同资助。 （编号:41171165）
