| 雷州半岛加勒比松人工林旱季液流特征与耗水量研究 |
| |
| 引用本文： | 张宁南,徐大平,Jim Morris,杨曾奖,周光益.雷州半岛加勒比松人工林旱季液流特征与耗水量研究[J].林业科学研究,2007,20(5):591-597. |
| |
| 作者姓名： | 张宁南 徐大平 Jim Morris 杨曾奖 周光益 |
| |
| 作者单位： | 1. 中国林业科学研究院热带林业研究所,广东,广州,510520
2. Forest Science Centre, Heidelberg, Victoria, Australia 3084 |
| |
| 基金项目： | 科技部社会公益研究项目 |
| |
| 摘 要： | 利用热脉冲技术对雷州半岛25年生加勒比松人工林旱季 (2000年10月至2001年2月)树干液流特征、耗水及环境因子的关系进行研究.结果表明:加勒比松边材不同位点的液流密度由外到内呈低-高-低的态势;观测期间林分日液流密度变幅为411～4 120 L·m-2·d-1,日平均液流密度为2 084 L·m-2·d-1;旱季无雨时,加勒比松日液流密度与太阳辐射、饱和蒸汽压差、气温及湿度相关性显著;有雨时,加勒比松日液流密度仅与饱和蒸汽压及湿度相关性显著;单株日耗水量变幅为6.4～169.5 L,日平均耗水量为55.5 L,林分日耗水量变幅为0.35～3.52 mm·d-1,日均耗水量为1.71 mm·d-1,旱季总耗水量为257.7 mm,占同期降水量的72.3%.
|
| 关 键 词： | 加勒比松 热脉冲技术 液流密度 蒸腾耗水 边材 |
| 文章编号： | 1001-1498（2007）05-0591-07 |
| 收稿时间： | 2006-12-20 |
| 修稿时间： | 2006年12月20 |
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 and ZHOU Guang-yi.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[J].Forest Research,2007,20(5):591-597. |
| |
| Authors: | ZHANG Ning-nan XU Da-ping JIM Morris YANG Zeng-jiang and ZHOU Guang-yi |
| |
| Institution: | Research Ins titu te ofTrop icalForestry, CAF, Guangzhou 510520, Gu angdong, Ch ina;Research Ins titu te ofTrop icalForestry, CAF, Guangzhou 510520, Gu angdong, Ch ina;Fores t Science Cen tre, Heidelberg, Victoria, Australia 3084;Research Ins titu te ofTrop icalForestry, CAF, Guangzhou 510520, Gu angdong, Ch ina;Research Ins titu te ofTrop icalForestry, CAF, Guangzhou 510520, Gu angdong, Ch ina |
| |
| 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. |
| |
| Keywords: | Pinus caribaes Heat Pulse method sap flow density transpiration sapwood |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《林业科学研究》浏览原始摘要信息 |
| 点击此处可从《林业科学研究》下载免费的PDF全文 |
|
