模拟降水量对毛乌素沙柳幼苗蒸发蒸腾的潜在影响

doi:10.11733/j.issn.1007-0435.2001.02.009

›› 2001, Vol. 9 ›› Issue (2): 121-127.DOI: 10.11733/j.issn.1007-0435.2001.02.009

模拟降水量对毛乌素沙柳幼苗蒸发蒸腾的潜在影响

肖春旺

中国科学院植物研究所植被数量生态学开放研究实验室, 北京, 100093

收稿日期:2000-09-21 修回日期:2001-01-13 出版日期:2001-05-15 发布日期:2001-05-15
作者简介:肖春旺(1969- ),男,云南景洪人,大学讲师,中国科学院植物研究所博士生,主要从事全球变化研究.主持贵州省自然科学技术基金一项,参加国家973计划、中国科学院和国家自然基金委资助项目多项.发表论文20余篇
基金资助:
国家重点专项基础研究(G1999043407),中国科学院95重大项目B(KZ951-B1-108)和国家自然基金委95重点项目(49835010)

Potential Effect of Simulated Precipitation Change on the Evapotranspiration of Salix psammophylla Seedlings in Maowusu Sandland

XIAO Chun-wang

Laboratory of Quantitative Vegetation Ecology, Institute of Botany CAS, Beijing 100093

Received:2000-09-21 Revised:2001-01-13 Online:2001-05-15 Published:2001-05-15

摘要/Abstract

摘要： 选择毛乌素沙地优势灌木沙柳为对象,研究15.5、315、42.5和630mm4种人控年降水量,对沙柳幼苗蒸发蒸腾作用的影响.结果表明,沙柳蒸发蒸腾量随着降水量的增加而逐渐增大,从15.5mm增至630mm,日蒸散量分别为1.63、3.11、4.3和5.66mm,其中沙地蒸发量占主要部分.少量降水时,幼苗蒸腾速率明显呈现"午睡”现象,而充足降水则能消除"午睡”现象.相关分析结果表明,环境因子,如沙地含水率、太阳有效辐射、大气温度和饱和水汽压差,以及植物因素,如叶面积指数、叶片温度和气孔导度等,均能显著影响沙柳的蒸腾作用.

关键词: 模拟降水量, 毛乌素沙地, 沙柳幼苗, 蒸发蒸腾作用

Abstract: Maowusu sandland is a typical dry and semi dry sandland in China.Water is the most important limited factor there.It is greatly affected for distribution pattern of terrestrial ecosystem and natural environment with great global change,especially global precipiatation change.The response of transpiration is investigated for seedlings of S.psammophylla, a dominant shrub in Maowusu sandland,to the global precipitation change by artificially controlling four water supply levels of 157.5 mm、315 mm、472.5 mm and 630 mm.The results show that evapotranspiration of S.psammophylla seeding increased with the increase in water supply in Maowusu sandland.The average daily evapotranspirations for four levels of water supply were 1.63 mm、3.11 mm、4.37 mm and 5.66 mm,respectively.And the evaporation contributed the main part in evapotranspiration.Transpiration rate of the seedlings showed strongly midday depression under low water supply,but not under full water supply.Correlation analysis showed that meteorological variables,such as containing water rate of sandland,photosynthetic available radiation,air temperature,saturated water vapour pressure difference,and physiological variables,such as leaf area index,leaf temperature,stomatal conductance,affected transpiration of S.psammophylla seedlings.

Key words: Simulated precipitation, Mawousu sandland, S.psammophylla seedlings, Evapotranspiration

中图分类号:

S793

肖春旺. 模拟降水量对毛乌素沙柳幼苗蒸发蒸腾的潜在影响[J]. , 2001, 9(2): 121-127.

XIAO Chun-wang . Potential Effect of Simulated Precipitation Change on the Evapotranspiration of Salix psammophylla Seedlings in Maowusu Sandland[J]. , 2001, 9(2): 121-127.

参考文献

[1] Houghton J T,Jenkins G J,Ephraums J T.Intergovernmental panel on climate change.climate change:The IPCC Scientific Assessment[M]. Cambridge:Cambridge University Press,1990.
[2] Houghton J T,Callender B A,Varney S K.Intergovernmental panel on climate change.Climate Change.The Supplementary Report to the IPCC Scientific Assessment[M] Cambridge:Cambridge University Press,1992.
[3] Houghton J T,Meira Filho L G,Bruce J,Hoesung L,Callender B A,Haites E,Harries N,Maskell K.Intergovernmental panel on climate change.climate change.radiative forcing of climate change and an Evaluation of the IPCC IS92 Emission Scenarios[M]. Cambridge:Cambridge University Press,1995.
[4] Graham R W,Erimm E C.Effects of global climate change on the pattern of terrestrial biological communities[J]. Trends Ecol.Evolut.,1990,5:289～292.
[5] Tyree M T,Alexander J D.Plant water relations and the effects of elevated CO₂:A review and research[J]. Vegetatio,1993,104/105:47～62.
[6] Dahlman R C.CO₂ and plants:Revisited[J]. Vegetatio,1993,104/105:339～355.
[7] 张新时.毛乌素沙地的生态背景及其草地建设的原则与优化模式[J]. 植物生态学报,1994,18:1～16.
[8] 姚洪林,魏成泰,廖茂彩.内蒙古毛乌素沙地开发整治研究中心概况.王家祥主编:毛乌素沙地开发整治研究中心研究文集(第1集)[M]. 呼和浩特:内蒙古出版社,1992.1～7.
[9] 董学军,张新时,杨宝珍.依据野外的蒸腾速率对几种沙地灌木水分平衡的初步依据[J]. 植物生态学报,1997,21:208～225
[10] 陈仲新,谢海生.内蒙古毛乌素沙地主要景观生态类型灌丛生物多样性初步研究[J]. 生态学报,1994,14:345～354.
[11] 卢纹岱,朱一力,沙捷,朱红兵.SPSS for windows从入门到精通[M]. 北京:电子工业出版社,1997,318～351.
[12] O.L.朗格.L.卡彭.E.D.舒尔策.水分与植物生活--问题与研究现状[M]. 樊梦康等译.北京:科学出版社.1985,40～87.
[13] 沈允钢,王天铎.光合作用-从机理到农业[M]. 上海:上海科学技术出版社.1978,70～90.
[14] Lösch R,Tenhumen J D.Stomatal responses to humidityphemonenon and mechanism[A]. In:Javis PG,Mansfield TA(eds.).Stomatal Physiology[C]. Cambridge University Press,1981,137～161.
[15] Mansfield T A,Kavies W J.Stomata and stomatal mechanism.In:Paleg LG,Aspinall D(eds.).The physiology and Bio chemistry of Drought Resistance in Plants[M]. New York.London.Toronto.San Franisco,Academic Press Sydney,1981,315～346
[16] Singh K P,Singh P,Sharma H C.Diurnal patterns of photosynthesis,evapotranspiration and water use efficiency in Mustard at different growth phases under field conditions[J]. Photosynthetica,1986,20:117～123.
[17] 郑海雷,黄子琛.绿洲生态条件下春小麦蒸发蒸腾特征及其影响因子[J]. 植物生态学报,1994,18:362～371

模拟降水量对毛乌素沙柳幼苗蒸发蒸腾的潜在影响

Potential Effect of Simulated Precipitation Change on the Evapotranspiration of Salix psammophylla Seedlings in Maowusu Sandland

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