Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agrformet.2018.02.018 |
Shifts of irrigation in Aleppo pine under semi-arid conditions reveal uncoupled growth and carbon storage and legacy effects on wood anatomy | |
Pacheco, Arturo1; Julio Camarero, J.2; Carrer, Marco1 | |
通讯作者 | Pacheco, Arturo |
来源期刊 | AGRICULTURAL AND FOREST METEOROLOGY |
ISSN | 0168-1923 |
EISSN | 1873-2240 |
出版年 | 2018 |
卷号 | 253页码:225-232 |
英文摘要 | Climate models forecast progressive aridification in the Mediterranean region. These warmer and drier conditions will probably lead to a decrease in carbon fixation and growth rates of drought-prone forests. To improve our knowledge on how water availability drives radial growth, wood anatomy and carbon storage we compared changes during a 40-year period in tree-ring width, wood-anatomical traits (tracheid lumen area, cell-wall thickness and parenchyma area), and stem sapwood non-structural carbohydrates (NSC) concentrations. We studied the drought-tolerant Aleppo pine (Pinus halepensis) comparing trees subjected to three irrigation regimes (control trees, no irrigation; IR trees, irrigated trees; TI trees, temporarily irrigated trees). Tree-ring width of TI trees widely overtook growth rates shown by IR trees during the irrigation treatment (1980s), whereas transversal lumen area and cell-wall thickness presented similar values in both groups of trees. Non-irrigated trees showed the lowest growth rates and also formed tracheids with the smallest lumen area and the narrowest cell walls. After the irrigation period, TI and trees without irrigation showed similar year-to-year growth variability. Lumen area of TI trees took 4-5 years to show values similar to those of the non-irrigated group. The TI trees had lower ray parenchyma area percentages during the irrigation period; afterwards both TI and non-irrigated trees formed similar amounts of ray parenchyma which were always higher than in IR trees. NSC concentrations were lower for IR trees suggesting either a dilution effect due to their significantly larger biomass or a higher demand for NSC by other carbon sinks such as primary growth. Aleppo pine may coordinate carbon supply and demand (growth) under changing conditions of water availability but long-term modification in soil moisture lead to legacy effects on wood anatomy. |
英文关键词 | Drought Irrigation Dendroanatomy Pinus halepensis Non-structural carbohydrates Wood parenchyma Xylem |
类型 | Article |
语种 | 英语 |
国家 | Italy ; Spain |
收录类别 | SCI-E |
WOS记录号 | WOS:000430783800020 |
WOS关键词 | FOREST TREES ; SEASONAL DYNAMICS ; CAMBIAL ACTIVITY ; SEVERE DROUGHT ; WATER-STRESS ; CLIMATE ; XYLEM ; SYLVESTRIS ; HALEPENSIS ; RESPONSES |
WOS类目 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/207315 |
作者单位 | 1.Univ Padua, Dip TeSAF, I-35020 Legnaro, PD, Italy; 2.CSIC, IPE, Avda Montanana 1005,Apdo 202, E-50192 Zaragoza, Spain |
推荐引用方式 GB/T 7714 | Pacheco, Arturo,Julio Camarero, J.,Carrer, Marco. Shifts of irrigation in Aleppo pine under semi-arid conditions reveal uncoupled growth and carbon storage and legacy effects on wood anatomy[J],2018,253:225-232. |
APA | Pacheco, Arturo,Julio Camarero, J.,&Carrer, Marco.(2018).Shifts of irrigation in Aleppo pine under semi-arid conditions reveal uncoupled growth and carbon storage and legacy effects on wood anatomy.AGRICULTURAL AND FOREST METEOROLOGY,253,225-232. |
MLA | Pacheco, Arturo,et al."Shifts of irrigation in Aleppo pine under semi-arid conditions reveal uncoupled growth and carbon storage and legacy effects on wood anatomy".AGRICULTURAL AND FOREST METEOROLOGY 253(2018):225-232. |
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