Study on the Difference in Canopy Spectral Reflectance and Chlorophyll Content of Spring Wheat at Jointing Stage in Different Land
JIN Yan-hua1, 3, XIONG Hei-gang2, 3*, ZHANG Fang1, 3, WANG Li-feng1, 3
1. College of Resources & Environment Science, Xinjiang University, Urumqi 830046, China 2. College of Art & Science, Beijing Union University, Beijing 100083, China 3. Key Laboratory of Oasis Ecology Ministry of Education, Urumqi 830046, China
Abstract：Taking chlorophyll content, seedling height, blade width and canopy spectral reflectance of spring wheat at jointing stage in different lands as data source, by analyzing the correlations between canopy spectral reflectance and chlorophyll content, making regression analysis for red edge inflection points of canopy spectral reflectance and chlorophyll content of spring wheat, the chlorophyll content monitor models of irrigated and dry land were established respectively. The results showed that there is a significant difference in chlorophyll content of spring wheat, with chlorophyll content of irrigated land much higher. Although there is a good correlation between wheat canopy spectral reflectance and chlorophyll content in the two lands, the correlation of dry spring wheat is lower than irrigated land in visible light and near infrared band. In the visible region, dry spring wheat canopy spectral reflectance is higher, inverse in near-infrared region. Due to high soil moisture, the dry-land spring wheat grows well and there is little difference from irrigated land. The monitor model of red-edge inflection points of canopy spectral reflectance and chlorophyll content of spring wheat at different lands showed that irrigated land wheat is available for linear model, The estimated precision is 94.06%, but dry land is suitable for binomial model, The estimated precision is 97.15%, 10.48% higher than linear model.
靳彦华1, 3，熊黑钢2, 3*，张 芳1, 3，王莉峰1, 3 . 不同地类春小麦拔节期冠层光谱与叶绿素差异研究 [J]. 光谱学与光谱分析, 2013, 33(04): 1043-1047.
JIN Yan-hua1, 3, XIONG Hei-gang2, 3*, ZHANG Fang1, 3, WANG Li-feng1, 3 . Study on the Difference in Canopy Spectral Reflectance and Chlorophyll Content of Spring Wheat at Jointing Stage in Different Land . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(04): 1043-1047.
[1] TANG Yan-lin, WANG Ji-hua, HUANG Jing-feng, et al(唐延林, 王纪华, 黄敬峰, 等). Transactions of the Chinese Society of Agricultural Engineering(农业工程学报), 2003, 19(6): 167. [2] CHEN Yan, HUANG Chun-yan, WANG Deng-wei, et al(陈 燕, 黄春燕, 王登伟, 等). Xinjiang Agricultural Sciences(新疆农业科学), 2006, 43(6): 451. [3] Gausman H W, Allen W A, Cardenas R, et al. Application of Optics, 1970, 9(3): 545. [4] Card D H, Peterson D L, Matson P A, et al. Remote Sensing of Environment, 1988, 26(1): 123. [5] Horler D N H, Dockray M, Barber J. Remote Sensing, 1983, 4(4): 273. [6] Filella I. Remote Sensing, 1994, 15(7): 1459. [7] YI Qiu-xiang, HUANG Jing-feng, WANG Xiu-zhen(易秋香, 黄敬峰, 王秀珍). Journal of Infrared Millimeter Waves(红外与毫米波学报), 2007, 26(5)：393. [8] HE Ting, WANG Jing, CHENG Ye, et al(何 挺, 王 静, 程 烨, 等). Geography and Geo-Information Science(地理与地理信息科学), 2006, 3(2): 30. [9] TANG Yan-lin, WANG Ren-chao, HUANG Jing-feng, et al(唐延林, 王人潮, 黄敬峰, 等). Journal of Remote Sensing(遥感学报), 2004, 8(2): 185. [10] YANG Min-hua, ZHAO Chun-jiang, ZHAO Yong-chao, et al(杨敏华, 赵春江, 赵永超, 等). Scientia Agricultura Sinica(中国农业科学), 2002, 35(6): 626.
