干旱区生态环境知识资源中心(Arid): 宁夏中部干旱带老压砂地枣树生物量模型研究

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	宁夏中部干旱带老压砂地枣树生物量模型研究
其他题名	Study on biomass model of jujube trees in old gravel-mulched field in the arid zone of central Ningxia
	李晨; 李王成; 董亚萍; 王双涛; 马己安; 郝璐
来源期刊	安徽农业大学学报
ISSN	1672-352X
出版年	2020
卷号	47 期号:1 页码:161-166
中文摘要	为准确建立宁夏中部干旱带老压砂地枣树生物量模型,采用一种不伤害枣树的方法,分别以枝条直径和长度、枣吊长度及直径,单枝上的叶片数目M和叶片面积S、枣果纵径和横径等为自变量,以各器官生物量为因变量,使用线性和非线性模型对其地上各器官生物量进行拟合,以决定系数(R~2)、均方根误差(RMSE) 、总相对误差(TRE)以及平均预估误差(MPE)为评价指标,综合评价选出最优模型。使用同年9月中旬采集的数据对模型进行验证,采用预测精度A和决定系数R~2作为验证指标。结果表明,所建立的生物量模型均具有较高的精度,其中生物量模型的R~2为0.89~0.97,RMSE为0.30~3.67 g,TRE为0.01%~1.55%,MPE为0%~0.14%;经过验证可知,其预测精度A在80.4%~98.5%之间,决定系数R2在0.81~0 .99之间;枣树各器官和枣果生物量模型残差均呈正态分布,整体没有呈现出发散的现象,均分布在直线上下两端。计算及分析表明所建立的老压砂地枣树生物量模型具有一定的准确性以及可靠性。
英文摘要	In order to accurately establish a biomass model for jujube trees in the old sand-sanded land in the central arid zone of Ningxia, we used a method that does not harm jujube trees, taken the diameter and length of the branches, the length of the jujube, the diameter, the number of leaves M on the single branch, the leaf area S, the longitudinal diameter and transverse diameter of jujube fruit as independent variables, and the biomass of each organ as the dependent variable. The linear and nonlinear models were used to fit the biomass of each organ on the ground, using correlation coefficient (R~2) and root mean square error ( RMSE), total relative error (TRE) and mean prediction error (MPE) as the evaluation indicators, and the optimal model was selected. The model was verified using the data collected in mid-September of the same year, using the prediction accuracy A and the correlation coefficient R~2 as verification indicators. The results showed that the established biomass models had high precision, with R~2 of 0.89-0.97, RMSE of 0.30-3.67 g, TRE of 0.01%-1.55%, and MPE of 0%-0.14%. It was proved that the prediction accuracy A was between 80.4% and 98.5%, and the correlation coefficient R~2 was between 0.81 and 0.99. The residuals of jujube tree organs and jujube biomass models were normally distributed, without the phenomena of divergency in the whole, all appeared at the upper and lower ends of the line. The calculation and analysis showed that the biomass model of jujube tree in the old sand control has certain accuracy and reliability.
中文关键词	生物量模型 ; 老压砂地 ; 枣树 ; 残差分析
英文关键词	biomass model old gravel-mulched field jujube trees residual analysis
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6705065
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353312
作者单位	李晨, 宁夏大学土木与水利工程学院, 银川, 宁夏 750021, 中国. 董亚萍, 宁夏大学土木与水利工程学院, 银川, 宁夏 750021, 中国. 王双涛, 宁夏大学土木与水利工程学院, 银川, 宁夏 750021, 中国. 马己安, 宁夏大学土木与水利工程学院, 银川, 宁夏 750021, 中国. 郝璐, 宁夏大学土木与水利工程学院, 银川, 宁夏 750021, 中国. 李王成, 宁夏大学土木与水利工程学院;;宁夏节水灌溉与水资源调控工程技术研究中心;;旱区现代农业水资源高效利用教育部工程研究中心, ;;宁夏节水灌溉与水资源调控工程技术研究中心;;旱区现代农业水资源高效利用教育部工程研究中心, 银川;;银川;;银川, ;;;; 750021;;750021;;750021.
推荐引用方式 GB/T 7714	李晨,李王成,董亚萍,等. 宁夏中部干旱带老压砂地枣树生物量模型研究[J],2020,47(1):161-166.
APA	李晨,李王成,董亚萍,王双涛,马己安,&郝璐.(2020).宁夏中部干旱带老压砂地枣树生物量模型研究.安徽农业大学学报,47(1),161-166.
MLA	李晨,et al."宁夏中部干旱带老压砂地枣树生物量模型研究".安徽农业大学学报 47.1(2020):161-166.