Character istics of Sap F lux Den sity andW a ter Use of P inus ca ribaeaP lan ta tion in Dry Sea son on the L eizhou Peninsula

ZHANG Ning-nan; XU Da-ping; JIM Morris; YANG Zeng-jiang; ZHOU Guang-yi

The sap flux density ( SFD) and water use of a 25-year-old Pinus caribaea plantation were measured indry season (October 2000 to February 2001) atLeizhou Pen insula, sou thern Ch ina by using the heat pu lsemethod.Experimental resu lts showed that the sap flux density ( SFD) of the middle sapwood was higher than the outer andinner; the da ily SFDs of different sizes of trees diameter had similar pattern, the b igger trees had h igher SFD thanthe smaller trees due to the d ifference in size of root system; the mean da ily SFD at stand level was around 411~4 120 L# m-2 # d-1, themean was 2 084 L# m-2 # d-1; the SFD was a ffected by solar radiation, vapor pressuredefic it (VPD) , a ir temperature and humidity in non2ra iny days, and byVPD and humidity in rainy days in the dryseason. The dailywater use at single tree levelwas changed from 6. 4 to 169. 5 L, with amean of55. 5 L. The dailywater use of forest standwas between 0. 35~ 3. 52 mm# d-1, with a mean ofmean is 1. 71 mm# d-1. The totalwater use in dry season was 257. 7 mm, or 72. 3% of the tota l ra infa ll during the period.

1. Research Ins titu te ofTrop icalForestry, CAF, Guangzhou 510520, Gu angdong, Ch ina

2. Fores t Science Cen tre, Heidelberg, Victoria, Australia 3084

Received Date: 2006-12-20

Abstract: The sap flux density ( SFD) and water use of a 25-year-old Pinus caribaea plantation were measured indry season (October 2000 to February 2001) atLeizhou Pen insula, sou thern Ch ina by using the heat pu lsemethod.Experimental resu lts showed that the sap flux density ( SFD) of the middle sapwood was higher than the outer andinner; the da ily SFDs of different sizes of trees diameter had similar pattern, the b igger trees had h igher SFD thanthe smaller trees due to the d ifference in size of root system; the mean da ily SFD at stand level was around 411~4 120 L# m-2 # d-1, themean was 2 084 L# m-2 # d-1; the SFD was a ffected by solar radiation, vapor pressuredefic it (VPD) , a ir temperature and humidity in non2ra iny days, and byVPD and humidity in rainy days in the dryseason. The dailywater use at single tree levelwas changed from 6. 4 to 169. 5 L, with amean of55. 5 L. The dailywater use of forest standwas between 0. 35~ 3. 52 mm# d-1, with a mean ofmean is 1. 71 mm# d-1. The totalwater use in dry season was 257. 7 mm, or 72. 3% of the tota l ra infa ll during the period.

HTML

Reference (18)

[1]	WangH, Malcolum D C, Fletch er AM. P inus ca riba ea in Ch ina:in troduction, genet ic resou rces and future prosp ects [J]. Forest Eco logy andManagemen t, 1999, 117: 1 ~ 15
[2]	郑勇奇. 加勒比松杂交育种现状及发展对策的探讨[J]. 林业科学研究, 2003, 16( 1): 110~ 116
[3]	H atton T J, Wu H I. Scaling theory to ext rap olate ind iv idual treewater to stand water u se [J]. H yd rolog ical process, 199 5, 9: 5 27~ 54 0
[4]	Morris J D, Collopy J J. Water u se and salt accumu lat ion byEu calyp tu s camaldu len sis and Casuarina cunn inghamiana on a site withshallow salin e groundwater [J]. Agricu lturalWaterMan agemen t,1999, 39: 205~ 227
[5]	王华田, 邢黎峰, 马履一, 等. 栓皮栎水源林林木耗水尺度扩展方法研究[J]. 林业科学, 2004, 40 ( 6): 170 ~ 175
[6]	张小由, 康尔泗, 司建华, 等. 胡杨蒸腾耗水的单木测定与林分转换研究[J]. 林业科学, 2006, 42 ( 7): 28 ~ 32
[7]	刘奉觉, Edward sW R N. 杨树树干液流动态研究[J]. 林业科学研究, 1993, 6( 4 ): 368~ 372
[8]	李海涛, 陈灵芝. 应用热脉冲技术对棘皮桦和五角枫树干液流的596第5期张宁南等: 雷州半岛加勒比松人工林旱季液流特征与耗水量研究研究[J]. 北京林业大学学报, 1998, 20( 1 ): 1~ 6
[9]	孙鹏森, 马履一, 王小平, 等. 油松树干液流的时空变异性研究[J]. 北京林业大学学报, 2000, 22( 5): 1 ~ 6
[10]	张小由, 龚家栋. 利用热脉冲技术对梭梭液流的研究[J]. 西北植物学报, 2004, 24 ( 12): 2250 ~ 2254
[11]	熊伟, 王彦辉, 徐德应. 宁南山区华北落叶松人工林蒸腾耗水规律及其对环境因子的响应[J]. 林业科学, 2003, 39( 2 ): 1~ 7
[12]	张宁南, 徐大平, Jim morris, 等. 雷州半岛尾叶桉人工林树液茎流特征的研究[J]. 林业科学研究, 2003, 16 ( 6): 661~ 667
[13]	张宁南, 徐大平, Jim morris, 等. 雷州半岛尾叶桉人工林耗水量研究[J]. 林业科学研究, 2007, 20( 1): 1~ 5
[14]	赵平, 饶兴权, 马玲, 等. 基于树干液流测定值进行尺度扩展的马占相思林段蒸腾和冠层气孔导度[J]. 植物生态学报, 2006,30 ( 4): 655 ~ 665
[15]	TeskeyR O, Sh eriff D W. Water use by P inu s rad ia te trees in aplan tat ion [J]. T ree Phys iology, 1996, 16: 273~ 279
[16]	Myers B J, T alasma T. Site water balan ce and tree water s tatus inirrigated and fert ilised stands ofP inus rad ia ta [J]. Fores t andE cology andManagement, 1992, 52: 17~ 42
[17]	Bru ijnzeelL A. H ydrology of forest p lan tations in th e trop ics[A].In: Namb iar EK S, Brown A L. Management of soi,l nutrients andwater in trop ica l p lan tat ion forests [C]. ACIAR Mon ograph No.43. ISBN 1 86320 198X, 1997: 146~ 147
[18]	MyersB J, Theiveyanath an S, O. BrienN D, et al. Growth and water u se ofE ucalyptu s g rand is and P inu s rad iate p lan tat ion s irrigatedwith effluen t[J]. T ree Phys iology, 1996, 16: 211~ 219

Character istics of Sap F lux Den sity andW a ter Use of P inus ca ribaeaP lan ta tion in Dry Sea son on the L eizhou Peninsula

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views