DOI: 10.1016/j.foreco.2016.09.021
Scopus记录号: 2-s2.0-84988662381
论文题名: Drought impacts on tree growth of two pine species along an altitudinal gradient and their use as early-warning signals of potential shifts in tree species distributions
作者: Marqués L. ; Camarero J.J. ; Gazol A. ; Zavala M.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 381 起始页码: 157
结束页码: 167
语种: 英语
英文关键词: Basal area increment
; Dendroecology
; Drought stress
; Pinus nigra subsp. salzmannii
; Pinus sylvestris
; Resilience
Scopus关键词: Drought
; Geothermal springs
; Groundwater
; Temperature
; Basal area increment
; Dendroecology
; Drought stress
; Pinus nigra subsp. salzmannii
; Pinus sylvestris
; Resilience
; Forestry
; altitude
; basal area
; coniferous forest
; contraction
; dendroecology
; drought stress
; early warning system
; ecosystem resilience
; growth response
; spatial distribution
; spring water
; subspecies
; warming
; Iberian Peninsula
; Mediterranean Region
; Pinus nigra
; Pinus sylvestris
英文摘要: Mediterranean pine forests are at risk of experiencing a decline in tree growth in response to climate warming if rising temperatures amplify drought stress. In mountain areas, tree growth could be enhanced in temperature-limited high elevations, whilst it might decline at water-constrained low elevations. Species differential responses could, however, modulate the impact of drought on forests along altitudinal gradients. To test for evidence of species differential drought impacts along an altitudinal gradient, we studied the growth responses of two Iberian pine species (Pinus sylvestris and Pinus nigra) subjected to Mediterranean conditions in Eastern Spain. We analysed the stability of growth (basal area increment) responses to climate and drought during the 1950–2014 period by using resistance and resilience indices. Pinus sylvestris growth was enhanced by warm spring temperatures, while Pinus nigra growth was improved by a positive spring water balance. Pinus sylvestris growth decreased temporally at the lower end of its altitudinal range, whereas Pinus nigra growth decreased at the upper end. Pinus sylvestris exhibited low growth stability at its low-elevation limit. Pinus nigra resistance also decreased along its altitudinal range, but this effect was compensated by a high resilience. In mixed stands the results were contrasting, with Pinus sylvestris (at the lower altitudinal range) being more vulnerable to drought-induced growth decline than Pinus nigra (at the upper altitudinal range). Under more severe and frequent dry spells, Pinus sylvestris at low altitude may be highly vulnerable to water shortage while Pinus nigra performs better. These growth responses are in line with the expectation of a contraction in the realized niche of Pinus sylvestris with extirpation of low-elevation stands if warmer and drier conditions continue. Moreover, we show that analysing growth resilience in response to drought is a useful method to anticipate likely changes in species dominance and thus to assist managers in designing forest adaptation strategies. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64684
Appears in Collections: 影响、适应和脆弱性
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作者单位: Forest Ecology and Restoration Group, Department of Life Sciences, Universidad de Alcalá (UAH), Edificio CienciasCampus Universitario28871 Alcalá de Henares, Madrid, Spain; Instituto Pirenaico de Ecología, (IPE–CSIC), Avda. Montañana1005, Zaragoza, Spain
Recommended Citation:
Marqués L.,Camarero J.J.,Gazol A.,et al. Drought impacts on tree growth of two pine species along an altitudinal gradient and their use as early-warning signals of potential shifts in tree species distributions[J]. Forest Ecology and Management,2016-01-01,381