Water Relations Only Partly Explain the Distributions of Three Perennial Plant Species in a Semi-arid Environment
作者： F. Domingo , A.J. Brenner , L. Gutierrez , S.C. Clark , L.D. Incoll
关键词: Atmospheric sciences 、 Anthyllis cytisoides 、 Soil water 、 Environmental science 、 Stipa tenacissima 、 Botany 、 Stomatal conductance 、 Retama 、 Anthyllis 、 Stipa 、 Water content 、 Plant science 、 Horticulture
摘要: The water relations and stomatal conductances of three perennial plant species, Stipa tenacissima L., Anthyllis cytisoides Retama sphaerocarpa (L.) Boiss., dominant on the upper slopes, mid-slopes floor a valley, respectively, in semi-arid south-east Spain, were investigated to test hypothesis that differences plant-soil could account for different distributions each species catena. Diurnal measurements potential (Ψw), relative content (RWC) conductance (gs) leaves made over one year. Leaf temperature, air humidity, wind-speed incident quantum flux density measured concurrently. Soil was determined gravimetrically at 0 – 5 cm 15 20 depths. Measurements Ψw, RWC gs analysed according meteorological conditions, based maxima daily temperature atmospheric saturation vapour deficit soil moisture content. can explain distribution along catena from valley side rejected but confirmed Retama.
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