globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2014.03.007
Scopus记录号: 2-s2.0-84898405419
论文题名:
Norway spruce physiological and anatomical predisposition to dieback
作者: Hentschel R.; Rosner S.; Kayler Z.E.; Andreassen K.; Børja I.; Solberg S.; Tveito O.E.; Priesack E.; Gessler A.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2014
卷: 322
起始页码: 27
结束页码: 36
语种: 英语
英文关键词: Carbon starvation ; Hydraulic failure ; Picea abies ; Stable isotope ; Water-use efficiency ; Wood density
Scopus关键词: Drought ; Hardwoods ; Isotopes ; Physiology ; Plants (botany) ; Population statistics ; Carbon starvation ; Hydraulic failure ; Picea abies ; Stable isotopes ; Water use efficiency ; Wood density ; Forestry ; Carbon ; Drought ; Forestry ; Hardwoods ; Isotopes ; Physiology ; Picea Abies ; Plants
英文摘要: Top dieback on Norway spruce has frequently occurred in stands of southern Norway and it is a serious threat to the productivity and stability of economically important spruce stands. The underlying dieback mechanisms are unclear; often the whole stand is not affected, but only individual trees. Drought stress is hypothesized as a crucial trigger for the onset of symptoms; therefore, we studied the response-effect relationships of water limitation and tree specific traits. We analyzed year ring anatomy, i.e. wood density, as an estimate of drought vulnerability, and carbon and oxygen isotope composition of the year rings as an estimate of leaf physiology. At two sites in SE Norway, we grouped declining and symptomless trees in direct vicinity of each other into pairs for comparison of anatomical and physiological traits. For one site, we observed a distinct lower wood density and higher radial growth of declining trees in comparison with the healthy trees over several years. We identified high vulnerability to cavitation due to lower wood density as a trait of individuals prone to dieback. We observed lower intrinsic water-use efficiency ( WUEi) associated with increased stomatal conductance. The healthy trees had lower stomatal conductance, which most likely prevented water losses during dry periods. Within a population, we observed a trade-off between long-term growth performance under "average" conditions and a different response for "extreme" events. These resource strategies will be important for Norway spruce management, especially for regions facing an increase in the frequency of drought events. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65977
Appears in Collections:影响、适应和脆弱性

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作者单位: Institute for Landscape Biogeochemistry, Leibniz Center for Agricultural Landscape Research (ZALF), Eberswalder Straße 84, GER-15374 Müncheberg, Germany; Institute of Botany, Department of Integrative Biology, University of Natural Resources and Applied Life Sciences, BOKU Vienna, Gregor Mendel Strasse 33, A-1180 Vienna, Austria; Norwegian Forest and Landscape Institute, P.O. Box 115, N-1431 Ås, Norway; Climatology Department, Norwegian Meteorological Institute, Henrik Mohns plass 1, N-0313 Oslo, Norway; Institute of Soil Ecology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, GER-85764 Neuherberg, Germany; Long-term Forest Ecosystem Research (LWF), Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland

Recommended Citation:
Hentschel R.,Rosner S.,Kayler Z.E.,et al. Norway spruce physiological and anatomical predisposition to dieback[J]. Forest Ecology and Management,2014-01-01,322
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