LU Guo-zheng,YANG Gui-jun,ZHAO Xiao-qing,et al.Inversion of Soybean Fresh Biomass Based on Multipayload Unmanned Aerial Vehicles (UAVs)[J].Soybean Science,2017,36(01):41-50.[doi:10.11861/j.issn.1000-9841.2017.01.0041]
基于多载荷无人机遥感的大豆地上鲜生物量反演
- Title:
- Inversion of Soybean Fresh Biomass Based on Multipayload Unmanned Aerial Vehicles (UAVs)
- Keywords:
- Unmanned aerial vehicle; Remote sensing; Multi-payload; Biomass; The vegetation index; Soybean
- 文献标志码:
- A
- 摘要:
- 以多载荷无人机获取数据和地面实测的数据为基础,将大豆生殖生长期分段建模,采用植被指数和光谱参数相结合再加上农学参数株高,通过最小二乘法建立多元线性回规模型的方法,来估算大豆开花期和结荚期的鲜生物量,采用高光谱植被指数法估算大豆鼓粒期和成熟期的鲜生物量。结果表明:在大豆开花期和结荚期内,采用混合法构建生物量反演模型利用交叉验证法,验证结果的R2和RMSE分别为0.714和0.393;在大豆鼓粒期和成熟期内,采用高光谱植被指数法构建生物量反演模型,利用交叉验证法,验证结果的R2和RMSE分别为0.697和0.386;大豆开花结荚期构建的模型和鼓粒成熟期构建的模型都有比较高的精度和可靠性,利用这两种模型完成了高光谱影像鲜生物量的遥感空间制图,能反映当地当时大豆的真实长势情况。
- Abstract:
- In this study, based on the UAV payload data and ground measured data, different soybean productive growth periods were modeled, vegetation index and spectral parameters combine agronomic parameters plus the height multiple linear scale back by least squares method were used to estimate the biomass of fresh soybean flowering and fruiting period, and hyperspectral vegetation index were use to estimate soybean drum fresh biomass and maturity of grain. The results showed that, during soybean flowering and fruiting period, verification results of R2and RMSE were 0.714 and 0.393, respectively, by using of biomass mixing build inversion model using cross-validation. During soybean seed filling stage and mature period, verification results of R2and RMSE were 0.697 and 0.386, respectively, by using of hyperspectral vegetation index build biomass inversion model using cross-validation. Models of soybean podding and seed filling to maturity periods both had a relatively high accuracy and reliability, using these two models to complete the hyperspectral remote sensing image of fresh biomass mapping could reflect the real growth situation of soybeans.
参考文献/References:
[1]王登伟, 黄春燕, 马勤建, 等. 棉花高光谱植被指数与LAI和地上鲜生物量的相关关系研究[J]. 新疆农业科学, 2008,45(5):426-429.(Wang D W, Huang C H, Ma Q J, et al. Relationships between Hyperspectral Vegetative index, LAI and aboveground fresh biomass of cotton[J]. Xinjiang Agricultural Sciences, 2008,45(5):426-429.)
备注/Memo
基金项目:北京市自然科学基金(4141001);北京市农林科学院科技创新能力建设项目(KJCX20140417);国家自然科学基金(41271345,41471351)。