Influence of Drought and Intraspecific Competition onTrees? Electrical Indexes

LIANG Jun; QU Zhi-wei; JIA Xiu-zhen; LIU Hui-wen; ZHANG Xing-yao

The results show ed that the trends of decrease of act iv ity of SOD and increase o f content ofMDA and so lu??b le sugar o f all the treatmentsw ere observed from the third day after the cutt ings o fP opulus tomentosa to be appliedw ith drought stress. The trends o f decrease of tree stem capac itance and increase of tree stem impedance w ereshow ed on sligh t and severe drought treatments from the th ird day after applied drought stress, wh ile the sim ilarchanges w ere observed on the contro l from the n in th day. Under intraspec ific competit ion, the stem diameter,he ight, tree stem capacitance and unit capac itance o f h igh density treatmen tw ere sign ificantly low er than that of lowdensity treatm en,t w hile the tree stem impedancew as sign if icantly higher than that o f low density treatmen.t The re??search o f tree stem capacitance and impedance and unit capac itancewould provide a theoretical basis for the quan ti??tative assessment of the degree of damage caused by env ironm enta l stresses.

1. Research Ins titu te ofForest Ecology, Environment and P rotect ion, CAF

Received Date: 2006-03-10

Abstract: The results show ed that the trends of decrease of act iv ity of SOD and increase o f content ofMDA and so lu??b le sugar o f all the treatmentsw ere observed from the third day after the cutt ings o fP opulus tomentosa to be appliedw ith drought stress. The trends o f decrease of tree stem capac itance and increase of tree stem impedance w ereshow ed on sligh t and severe drought treatments from the th ird day after applied drought stress, wh ile the sim ilarchanges w ere observed on the contro l from the n in th day. Under intraspec ific competit ion, the stem diameter,he ight, tree stem capacitance and unit capac itance o f h igh density treatmen tw ere sign ificantly low er than that of lowdensity treatm en,t w hile the tree stem impedancew as sign if icantly higher than that o f low density treatmen.t The re??search o f tree stem capacitance and impedance and unit capac itancewould provide a theoretical basis for the quan ti??tative assessment of the degree of damage caused by env ironm enta l stresses.

HTML

Reference (20)

[1]	?[1] M acDougallR G, M acLean D A, Thom psonR G. The use of electricalcapacitance to determ ine grow th and vigor of spruce and fir trees andstands in New B runsw ick[J] . Canadian Jou rnal of Forest Research,1988, 18( 5) : 587~ 594
[2]	M acDougallR G, Thom pson R G, P ien e H. S tem electrical capaci??tan ce and resistancem easu rem ents as related to total foliar b iom ass ofbalsam fir trees[J] . Canad ian Journal of Forest R esearch, 1987, 17( 9) : 1 071 ~ 1 074
[3]	L ekas T M, M acDougall R G, M acLean D A, e t a l. Seasonal trendsand effects of tem perature and ra infall on stem electrical capacitanceof sp ruce and fir t rees [J] . C anad ian Journal of Forest Research,1990, 20 ( 7) : 970 ~ 977
[4]	梁军, 屈智巍, 刘惠文, 等. 树体电容的生理学研究[J] . 林业科学, 2006, 42( 1) : 90 ~ 95
[5]	周章义. 一项值得研究的树势探测技术--- 电容法[J] . 山东林业科技, 2000 ( 6) : 38 ~ 42
[6]	金树德, 张世芳, 郑荣良. 从玉米生理电特性诊断旱情[J] . 农业工程学报, 1999, 15( 3) : 91~ 95
[7]	B lan chard R O, ShortleW C, DavisW. M echan ism relating cam b ialelectrical res istance to period ic grow th rate of balsam fir[J] . Can ad i??an Jou rnal of Forest Research, 1983, 13( 3) : 472~ 480
[8]	P ien e H, Thompson R G, M clsaac J E, et a l. E lectrical resistancem easu rem ents on young balsam f ir trees in relat ion to specif ic vo lum eincrem en ,t foliar b iom ass, and ion con tent of bark and w ood [J] . C a??nad ian Journal of ForestR esearch, 1984, 14 ( 2) : 177 ~ 180
[9]	D ixonM A, Thom pson R G, Fensom D S. E lectrical resistancem eas??urem ents of water poten tia l in avocado and wh ite spruce[J] . Can ad i??an Jou rnal of Forest Research, 1978, 8 ( 1) : 73 ~ 80
[10]	PieneH, Fensom D S, M cIsaac J E, et a l. E lectrical resistance andcapacitancem easurem en ts on young, spaced and un spaced, defol i??ated and p rotected, ba lsam fir trees[J] . C anad ian Jou rnal of ForestResearch, 1984, 14( 6) : 811~ 817
[11]	高保山, 董燕南, 王保柱. 树木生命力的电特性分析[J] . 河北农业大学学报, 1997, 20( 1 ): 71~ 73
[12]	Dav isW, ShortleW, Sh igo A. Poten tial hazard rating system for f irstands in fested w ith budworm us ing cam b ial electrical resistance[J] . Can ad ian Jou rn al of Forest Research, 1980, 10( 4) : 541~ 544
[13]	B lanchard R O, C arter J K. E lectrical res istance m easurem en ts todetectDutch elm d isease prior to sym ptom expression[J] . C anad ianJourn al of Forest Research, 1980, 10( 1 ) : 111~ 114
[14]	李合生. 植物生理生化试验原理和技术[M] . 北京: 高等教育出版社, 2003
[15]	邹琦. 植物生理学试验指导[M] . 北京: 中国农业出版社, 2000
[16]	张志良, 瞿伟菁. 植物生理学试验指导(第三版) [M] . 北京: 高等教育出版社, 2003
[17]	时忠杰, 胡哲森, 李荣生. 水分胁迫与活性氧代谢[J] . 贵州大学学报(农业与生物科学版) , 2002, 21( 2) : 140~ 145
[18]	王霞, 侯平, 尹林克, 等. 土壤水分胁迫对柽柳体内膜保护酶及膜脂过氧化的影响[J] . 干旱区研究, 2002, 19( 3 ) : 17~ 20
[19]	曾福礼, 张明风, 李玉峰. 干旱胁迫下小麦叶片微粒体活性氧自由基的产生及其对膜的伤害[J] . 植物学报, 1997, 39 ( 12 ) :1 105~ 1 109
[20]	左仲武, 刘彦超, 刘志龙. 水分胁迫下水杨酸对油松幼苗叶片膜脂过氧化作用的影响[J] . 西北林学院学报, 2003, 18 ( 4 ): 24~ 25

Influence of Drought and Intraspecific Competition onTrees? Electrical Indexes

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views