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内蒙古敖汉旗北部风沙土区两种灌木地上生物量估算模型
引用本文:王娟,汤军,郭月峰,高玉寒,姚云峰. 内蒙古敖汉旗北部风沙土区两种灌木地上生物量估算模型[J]. 农业工程, 2015, 5(6): 44-47
作者姓名:王娟  汤军  郭月峰  高玉寒  姚云峰
作者单位:内蒙古农业大学生态环境学院,呼和浩特010018
基金项目:内蒙古应用研究与开发计划项目“农林牧耦合生态系统固碳关键技术”(项目编号:20110732);中国科学院战略性先导科技专项“京津风沙源治理工程(内蒙古)固碳速率和潜力研究”(项目编号:XDA05060602);国家自然科学基金“内蒙古农牧交错带柠条锦鸡儿平茬对植物根系和土壤水分的影响机理”(项目编号:31500584)
摘    要:以内蒙古赤峰敖汉旗北部风沙土区两种主要灌木(黄柳、小叶锦鸡儿)为研究对象,利用不同函数和自变量来构建植株个体的地上生物量估测模型,筛选出与生物量相关性最显著、拟合度最好的地上生物量估测模型。研究结果表明:两种典型灌木的最优生物量回归方程均为幂函数方程。判定系数R2为0.626~0.915,SEE值为0.179~0.508,F检验达到显著性水平,黄柳以断面周长(DH)为自变量的模型最优,模型为 y=2.193x1.291(R2=0.915,p<0.01);小叶锦鸡儿则以冠幅(S)为自变量建立的幂函数模型最佳,为y=0.008x2.349,(R2=0.878,p<0.01)。由于灌木的生长状况具有空间异质性,在其他研究区使用该模型时需要精度的检验和校正。 

关 键 词:黄柳   小叶锦鸡儿   地上生物量   估测模型

Aboveground Biomass Estimation Model of Two Shrubs to Aohan Banner Northern Wind-sandy Area in Inner Mongolia
Wang Juan,Tang Jun,Guo Yuefeng,Gao Yuhan and Yao Yunfeng. Aboveground Biomass Estimation Model of Two Shrubs to Aohan Banner Northern Wind-sandy Area in Inner Mongolia[J]. Agricultural Engineering, 2015, 5(6): 44-47
Authors:Wang Juan  Tang Jun  Guo Yuefeng  Gao Yuhan  Yao Yunfeng
Abstract:Taking two main shrubs(Salix gordejevii,C.microphylla)in Aohan,Chifeng as the research object.To construct the plant individual aboveground biomass estimation model using different functions and different independent variables.Screening out optimal aboveground biomass estimation model,which was biomass significantly correlated,and the best fitting degree.Results showed that,optimal biomass regression equation for the two typical shrubs was a power function equation.Determination coefficient R2 range was 0.626~0.915,SEE value range was 0.179~0.508,F test to achieve significant level,Salix gordejevii to DH as optimal model of independent variable,model was y=2.193x1.291,(R2=0.915,p<0.01);C.microphylla to S as optimal model of independent variable,model was y=0.008x2.349,(R2=0.878,p<0.01).As the growth condition of shrubs with a spatial heterogeneity,using the model required accuracy testing and calibration in any other study areas. 
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