STOMATAL CONDUCTANCE OF SHORT ROTATION COPPICE BASED ON SAP FLOW MEASUREMENTS AND ITS RESPONSE TO CHOSEN METEOROLOGICAL VARIABLES

被引：0

作者：

Orsag, M. ^{[1
,2
]}

Trnka, M. ^{[1
,2
]}

Fischer, M. ^{[1
,2
]}

Kucera, J. ^{[3
]}

Zalud, Z. ^{[1
,2
]}

机构：

[1] Mendel Univ Brno, Fac Agron, Dept Agrosyst & Bioclimatol, Brno 61300, Czech Republic

[2] CzechGlobe Global Change Res Ctr AS CR, Vvi, Brno 60300, Czech Republic

[3] EMS Brno, Brno 62100, Czech Republic

来源：

MENDELNET 2012 | 2012年

关键词：

sap flow; canopy conductance; transpiration; short rotation coppice; POPLAR; CLONES; FLUX;

D O I：

暂无

中图分类号：

F3 [农业经济];

学科分类号：

0202 ; 020205 ; 1203 ;

摘要：

The main aim of this study was to derive stomata! conductance (gs) from sap flow measurements and explore some of possible applications of this method. Sap-flow and other meteorological variables were continuously monitored in poplar-based short rotation coppice (SRC) plantation in Bystrice nad Pernstejnem during growing season 2012. Sap flow of 8 trees was measured using heat dissipation method, then expressed as transpiration per square meter of projection area and by adding into rewritten Penman-Monteith equation the canopy conductance (gs) was obtained. Compared with direct measurements on leaf level this approach is advantageous for obtaining gs, because of integrating all leaf categories of tree or whole canopy. Further analysis also proved, that gs is strongly driven by VPD. Finally, it was found that the relationship between gs and VPD is also influenced by available soil moisture content.

引用

页码：865 / 873

页数：9

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