Prieto, Iván და Kikvidze, Zaal და Pugnaire, Francisco (2010) Hydraulic lift: soil processes and transpiration in the Mediterranean leguminous shrub Retama sphaerocarpa (L.) Boiss. Plant and Soil, 329. С. 447-456.
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ტექსტი
Prieto et al 2010 Plant Soil.PDF - გამოქვეყნებული ვერსია Download (339kB) | გადახედვა |
რეზიუმე
Hydraulic lift (HL) is the process by which plants can passively transfer water from deep, moist soil layers to shallow, dry soil layers. Although it has attracted recent research interest, a mechanistic understanding and its implications for ecosystem functioning are still lacking. Here we describe HL seasonal patterns in a semi-arid shrub species and its influence on plant water dynamics. We measured soil water availability and plant water status over the course of 1 year. Soil water potential in the rhizosphere of Retama sphaerocarpa (L.) Boiss (Fabaceae) individuals and in adjacent land was recorded using soil psychrometers. Sap flow was recorded simultaneously using the stem heat balance method (SHBM). Our results show a seasonal HL trend linked to mean seasonal soil water potential with greatest HL amplitudes at moderately low water potentials (ca −4 MPa). HL amplitude was negatively affected by nocturnal transpiration, and HL patterns were recorded in all seasons and at water potentials ranging from −0.1 MPa to −8.5 MPa which is consistent with R. sphaerocarpa deep rooting habit and its steady access to ground water.
| ობიექტის ტიპი: | სტატია |
|---|---|
| თემატიკა: | Q Science > Ecology |
| ქვეგანყოფილება: | Institutes > 4D Research Institute |
| განმათავსებელი მომხმარებელი: | Prof. Zaal Kikvidze |
| განთავსების თარიღი: | 16 აპრილი 2015 06:14 |
| ბოლო ცვლილება: | 16 აპრილი 2015 06:14 |
| URI: | http://eprints.iliauni.edu.ge/id/eprint/2057 |
ამ მასალაზე ხელმისაწვდომი ვერსია
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Hydraulic lift: soil processes and transpiration in the Mediterranean leguminous shrub Retama sphaerocarpa (L.) Boiss. (deposited 23 იანვარი 2014 05:47)
- Hydraulic lift: soil processes and transpiration in the Mediterranean leguminous shrub Retama sphaerocarpa (L.) Boiss. (deposited 16 აპრილი 2015 06:14) [ასახულია მიმდინარე დროს]
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