Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.12.047 |
Low densities in white pine stands reduce risk of drought-incited decline | |
Livingston, William H.1; Kenefic, Laura S.2 | |
2018-09-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
![]() |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 423页码:84-93 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | White pine (Pinus strobus) is commonly found in naturally regenerated even-aged stands on former agricultural lands throughout its range. These stands can be managed for rapid production of high-quality sawtimber, and are thus a valuable timber resource. Yet, periodic growth decline and mortality events have occurred, such as that observed in the late 1990s in southern Maine, USA. The present study uses increment measurements from white pine tree cores collected in the early 2000s to compare increment chronologies in high-and low-mortality stands in southern Maine. Periods and severity of decline were quantified, revealing a growth decline and mortality event that began in 1996 following a late-summer drought in 1995. Further, the sites on which mortality was most pronounced were observed to have soil restrictions resulting in shallow rooting depth, ranging from 19 cm to 32 cm deep. Restrictions included bedrock, lithological discontinuity (loamy cap overlaying sand), and plow pans. Stand stocking was also a predisposing factor; on average, stands that experienced greater mortality during the decline event had higher stocking than those that experienced less mortality. As a consequence, stand densities in declining stands were reduced through mortality to levels more common in nearby non-decline stands; those densities correspond to recommendations for low-density management of white pine (i.e., 330-540 trees ha and 17-25 m(2) ha(-1) of basal area at 20-30 cm DBH). The smaller diameters of the affected trees indicate the need to give priority to retention of large-diameter trees when thinning pole-and small sawtimber-sized (20-30 cm DBH) white pine stands. This and other studies demonstrate the need for low-density management of pole-size white pine stands to not only maximize growth and value but also reduce the risk of drought-incited decline and mortality on sites with rooting restrictions. |
英文关键词 | Pinus strobus Predisposing factors Forest health Silviculture Thinning Drought Tree decline |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437046900009 |
WOS关键词 | LAND-USE HISTORY ; NEW-ENGLAND ; SOIL COMPACTION ; NEW-YORK ; GROWTH ; VEGETATION ; FORESTS ; MAINE ; FARM ; USA |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/22620 |
专题 | 气候变化 |
作者单位 | 1.Univ Maine, 5755 Nutting Hall, Orono, ME 04469 USA; 2.US Forest Serv, USDA, Northern Res Stn, 54 Govt Rd, Bradley, ME 04411 USA |
推荐引用方式 GB/T 7714 | Livingston, William H.,Kenefic, Laura S.. Low densities in white pine stands reduce risk of drought-incited decline[J]. FOREST ECOLOGY AND MANAGEMENT,2018,423:84-93. |
APA | Livingston, William H.,&Kenefic, Laura S..(2018).Low densities in white pine stands reduce risk of drought-incited decline.FOREST ECOLOGY AND MANAGEMENT,423,84-93. |
MLA | Livingston, William H.,et al."Low densities in white pine stands reduce risk of drought-incited decline".FOREST ECOLOGY AND MANAGEMENT 423(2018):84-93. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论