BUD-BURST
; CLIMATIC ADAPTATION
; XYLEM PHENOLOGY
; PICEA-ABIES
; SCOTS PINE
; TEMPERATURE
; NORTHERN
; TREES
; SET
; XYLOGENESIS
WOS学科分类:
Forestry
WOS研究方向:
Forestry
英文摘要:
Forest managers use artificial regeneration to influence tree species composition and productivity. The selection of plant material could assume a leading role in forest planning, mainly when aiming to increase the adaptation of stands within a context of climate change. In this study, we investigated the timing of bud burst and bud set in five black spruce [Picea mariana (Mill.) B.S.P.] ecotypes growing in a common garden and originating from a latitudinal range in the boreal forest of Quebec, Canada. Bud phenology was monitored weekly during the 2015, 2017 and 2018 growing seasons. On average, the bud burst process lasted 23 days, occurring 1.2 days later for each degree Celsius of increase in mean annual temperature at the provenance site. Bud set duration was 55 days and occurred 1.8 days later for each degree Celsius of increase in mean annual temperature at the provenance site. We demonstrated that both bud burst and bud set occurred earlier in individuals from colder sites, which resulted in similar lengths of the growing season among provenances. This clinal variation in the timings of growth resumption and cessation confirms the ecotypic differentiation of black spruce populations and reflects a long-lasting adaptation to the local temperatures in the sites of origin. The findings of this study demonstrate that ecotype selection in black spruce can aim to avoid damage from either early or late frosts, but not both.
1.Univ Napoli Federico II, Dipartimento Agr, Via Univ 100, I-80055 Portici, NA, Italy 2.Univ Quebec Chicoutimi, Dept Sci Fondamentals, 555 Blvd Univ, Chicoutimi, PQ G7H 2B1, Canada 3.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou, Guangdong, Peoples R China
Recommended Citation:
Silvestro, Roberto,Rossi, Sergio,Zhang, Shaokang,et al. From phenology to forest management: Ecotypes selection can avoid early or late frosts, but not both[J]. FOREST ECOLOGY AND MANAGEMENT,2019-01-01,436:21-26