| 利用手持光谱设备估测羊草草地生物量 |
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| 引用本文： | 韩冬梅,何峰,谢开云,万里强,李向林.利用手持光谱设备估测羊草草地生物量[J].草原与草坪,2013(6):36-40. |
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| 作者姓名： | 韩冬梅 何峰 谢开云 万里强 李向林 |
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| 作者单位： | [1]兰州大学草地农业科技学院,甘肃兰州730020 [2]中国农业科学院北京畜牧兽医研究所,北京100193 |
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| 基金项目： | “十二五”国家科技计划（2011BAD17B01）和国家牧草产业技术体系（CARS-35-12）资助 |
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| 摘 要： | 在河北省沽源县以羊草为主的坝上草原，在降水和刈割为控制因素的试验小区，测量了地上干生物量，并利用ACS-430手持式光谱仪采集光谱数据，计算了9种植被指数值。对生物量与植被指数进行相关性分析，建立以产量为因变量、植被指数为自变量的生物量估测模型。结果表明，各个植被指数与产量的相关性都很好（P〈0．01），说明植被指数对草地覆盖度都很敏感。最后依据曲线模型的决定系数大小，认为归一化红边植被指数NDRE与产量建立的二次模型拟合效果最好（P〈0．01），拟合方程为y=0．024＋2．249x-7．136x^2，R^2=0．675。
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| 关 键 词： | 羊草 生物量 植被指数 |
A preliminary study of estimating biomass by using handheld spectrograph device on Leymus chinensis grassland |
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| HAN Dong-mei,HE Feng,XIE Kai-yun,WAN Li-qiang,LI Xiang-lin.A preliminary study of estimating biomass by using handheld spectrograph device on Leymus chinensis grassland[J].Grassland and Turf,2013(6):36-40. |
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| Authors: | HAN Dong-mei HE Feng XIE Kai-yun WAN Li-qiang LI Xiang-lin |
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| Institution: | 1. College of pastoral agriculture science and technology lanzhou nuiversity ,lanzhou 730020 ,china; 2. Institute of animal sciences ,chinese Academy of Agricultural Sciences ,beijing 100193,China) |
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| Abstract: | In Bashang Leymus chinensis grassland in Guyuan County in Hebei Province,the dry matter bio- mass in the experiment plots with controlled precipitation and moving intensity was survived, and the nine vege- tation indices was calculated based on the spectrum data of ACS-430 handheld spectroradiometer. The biomass estimation model was set up based on the correlation analysis on biomass and the vegetation index. The results indicated that the vegetation index and biomass were highly correlated（P〈0.01）, which means the vegetation index was sensitive to grassland coverage. Finally,the NDRE was the best vegetation index to estimate the bio mass according to the determination coefficient of the curve ,and the estimation equation was （R^2 =0. 675） |
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| Keywords: | Leymus chineusis biomass vegetation index |
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