欢迎访问林业科学,今天是

林业科学 ›› 1997, Vol. 33 ›› Issue (2): 117-126.

• 论文及研究报告 • 上一篇    下一篇

树木蒸腾耗水测算技术的比较研究*

刘奉觉1,郑世锴1,巨关升1,EdwardsWRN2,吴衍德3   

  1. 1. 中国林业科学研究院林业研究所 北京 100091
    2. 新西兰皇家园艺食品研究所
    3. 山东省沂南县林业局 沂南 276300
  • 收稿日期:1995-08-01 出版日期:1997-03-25 发布日期:1997-03-25

A STUDY ON COMPARISON OF MEASURING WATER-CONSUMPTION FOR TRANSPIRATION IN POPLAR

Fengjue Liu1,Shikai Zheng1,Guansheng Ju1,WRN Edwards2,Yande Wu3   

  1. 1. Forest Research Institute, Chinese Academy of Foresty Beijing 100091
    2. Hort. and Food Research institute New Zealand
    3. Forest Bureau of Yinan County, Shandong Province Yinan 276300
  • Received:1995-08-01 Online:1997-03-25 Published:1997-03-25

摘要:

1989-1991年,分别在山东(Ⅰ-69杨)与宁夏(合作杨)人工林中,用五种方法(整树容器法、热脉冲法、快速称重法、稳态气孔计法和微气象法)进行了蒸腾耗水的比较测定,结果表明:1.以整树容器法测定的单株日耗水量为100%,则水分饱和下快称法相应值为130%-140%;气孔计法值为291%;热脉冲法值为90.14%。2.以热脉冲法测定的日耗水量为100%,则快称法的测值为88%(六年生树)与112%(二年生树)。3.气孔计法测值高于快称法,在宁夏干旱地区为后者的130%-190%,在山东较湿润地区为240%-320%。4.微气象法中午蒸腾值十分接近整树容器法与热脉冲法,其误差小于2%。

关键词: 树木蒸腾耗水, 蒸腾测定技术, 整树容器法, 热脉冲法,  

Abstract:

A study on comparison of five methods for the transpiration water-comsumption conducted in poplar plantation in Shandong province (Populus deltoides cv."Lux"ex.Ⅰ-69/55) and Ningxia Autonomous Region (Populus opera) from 1989 to 1991.The five measuring methods are whole-tree potometer, quick-weighing method, LI-1600 porometer, heat pulse technique and Penman-Monteith method.The results of the study are as follows:(1) Supposing that the relative value of daily transpiration waterconsumption per tree measured with whole-tree potometer is 100%, the relative value measured by quick-weighing method is 130%-140%, the relative value measured with LI-1600 porometer is 291% and the relative value measured by heat pulse technique is 90.14%.(2) Supposing that the relative value of the daily transpiration water-consumption per tree measured by heat pulse technique is 100%, the relative value measured by quick-weighing method is 88% in 6-year-old tree and 112% in 2-year-old tree.(3) The value measured with LI-1600 porometer is 30%-90% higher than that measured by quick-weighing method in Ningxia arid zone and 140%-220% higher than that in more humid area of Shandong Province.(4) The value measured by Penman-Monteith method is very close to that measured with whole-tree potometer and that measured by heat pulse technique with errors less than 2%.

Key words: Transpiration, Water-consumption of tree, Technique for measuring transpiration, Whole-tree potometer, Heat pulse techniquee