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几种荒漠植物地上生物量估算的初步研究
引用本文:赵成义,宋郁东,王玉潮,蒋平安.几种荒漠植物地上生物量估算的初步研究[J].应用生态学报,2004,15(1):49-52.
作者姓名:赵成义  宋郁东  王玉潮  蒋平安
作者单位:1. 中国科学院新疆生态与地理研究所,乌鲁木齐,830011
2. 云南省地理研究所,昆明,650223
3. 新疆农业大学,乌鲁木齐,830001
基金项目:国家自然科学基金 (4 0 0 710 0 9),国家 43 5 0 6课题资助项目
摘    要:在调查植物样方的基础上,利用植株冠幅特征如冠幅长与宽、株高、基径、新生枝条数、总枝条数等作为变量建立了估算典型荒漠植物地上生物量的模型,利用植株冠幅长与宽所建拟合方程对估算琵琶柴灌丛生物量的精确度较高,经验证,预测值与实测值的相关系数为O.9989,相对误差在4.79%~10.12%之间利用植株株高、基径所建拟合方程对估算梭梭、多枝柽柳生物量计算值与实测值的相关系数在0.9418以上,显著性检验表明相关系数均为极显著经验证,预测值与实测值的相关系数分别为0.9902和0.9875.相对误差分别为6.87%~19.22%和7.49%~18.47%。研究表明,在大面积荒漠植物生物量研究中,利用植株冠幅特征作为变量来估算琵琶柴灌丛地上生物量方法简便可行,用来估算梭梭、多枝柽柳等灌木地上生物量时存在一定误差

关 键 词:荒漠植物  生物量  估算  冠丛特征
文章编号:1001-9332(2004)01-0049-04
修稿时间:2002年3月15日

Estimation of aboveground biomass of desert plants
ZHAO Chengyi ,SONG Yudong ,WANG Yuchao ,JIANG Pinan.Estimation of aboveground biomass of desert plants[J].Chinese Journal of Applied Ecology,2004,15(1):49-52.
Authors:ZHAO Chengyi  SONG Yudong  WANG Yuchao  JIANG Pinan
Affiliation:Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China. zcy@ms.xjb.ac.cn
Abstract:Based on the research of plant quadrate in Sangong River Basin in Xinjiang, the fitted equations were given, which could be used to estimate the aboveground biomass of typical desert plant by using the thicket characteristics such as length of crown diameter, width of crown diameter, number of basal branch, length of new branch, basal diameter (D) and plant height (H) as parameters. Using the length of crown diameter and the width of crown diameter as parameters, the fitted equation was set up and tested for estimating the aboveground biomass of Reaumuria soongorica Maxim. It had a relatively high accuracy and a fine linear relationship between the predicted values and measured values. Its coefficient and relative standard deviation was 0.9989 and 4.79%-10.12%, respectively. The results indicated that the fitted equation was easy and available for estimating the aboveground biomass of Reaumuria soongorica Maxim in large scale. The fitted equations were also set up and tested for estimating the aboveground biomass of Haloxylon ammodendron and Tamarix ramosissima by using the basal diameter and height of plant as the parameters. The coefficients and relative standard deviations of these equations were 0.9902, 0.9875 and 6.87%-19.22%, 7.49%-18.47%, respectively. Therefore, estimating the biomass of Reaumuria soongorica in large scale through crown characteristics was available, and estimating the biomass of Halaxylon Ammodendron and Tamarix ramosissima through crown characteristics would produce certain error.
Keywords:Desert plant  Biomass  Estimation  Crown characteristic  
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