欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2004, Vol. ›› Issue (1): 49-52.

• 研究论文 • 上一篇    下一篇

几种荒漠植物地上生物量估算的初步研究

赵成义1, 宋郁东1, 王玉潮2, 蒋平安3   

  1. 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
  • 收稿日期:2002-03-15 修回日期:2002-09-13 出版日期:2004-01-15
  • 通讯作者: 赵成义,男,1966年生,博士,主要从事干旱区水文学过程与生态学过程耦合机理研究,发表论文40余篇.Tel:0991-7885455,E-mail:zcy@ms.xjb.ac.cn.
  • 基金资助:
    国家自然科学基金(40071009);国家43506课题资助项目

Estimation of aboveground biomass of desert plants

ZHAO Chengyi1, SONG Yudong1, WANG Yuchao2, JIANG Pinan 3   

  1. 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
    2. Yunnan Institute of Geography, Kunming 650223, China;
    3. Xinjiang Agricultural University, Urumqi 830001, China
  • Received:2002-03-15 Revised:2002-09-13 Online:2004-01-15

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0.9989,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.

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) abstract and plant height (H) abstract 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 Haloxylon Ammodendron and Tamarix ramosissima through crown characteristics would produce certain error.

中图分类号: