DOI: 10.1016/j.foreco.2016.08.045
Scopus记录号: 2-s2.0-84987944983
论文题名: Long-term effect of periodic fire on nutrient pools and soil chemistry in loblolly-shortleaf pine stands managed with single-tree selection
作者: Liechty H.O. ; Hooper J.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 380 起始页码: 252
结束页码: 260
语种: 英语
英文关键词: Forest floor
; Nutrient regime
; Prescribed fire
; Uneven-aged management
Scopus关键词: Fires
; Floors
; Harvesting
; Lakes
; Minerals
; Nutrients
; Soils
; Control treatments
; Forest floors
; High frequency HF
; Prescribed fires
; Repeated application
; Single tree selection
; Understory vegetation
; Uneven-aged management
; Forestry
; coniferous tree
; fire history
; forest floor
; prescribed burning
; productivity
; soil chemistry
; soil nutrient
; thinning
; understory
; United States
; Pinus echinata
; Pinus taeda
英文摘要: Prescribed fire can be an important tool for managing loblolly (Pinus taeda L.) and shortleaf pine (Pinus enchinata Mill.) stands in the southern United States but few studies have reported the impact of repeated prescribed fires in stands that are routinely thinned or partially harvested. We compared nutrient pools and soil chemistry in portions of three uneven-aged loblolly-shortleaf pine stands that had received dormant-season prescribed fires every one to four years (high frequency fire) during a 20 year period to portions of these same stands in which fire was excluded (control). The stands had been managed using single-tree selection and harvested on a 5-year cycle since the establishment of the prescribed fire treatments. Sixteen months following the last prescribed fire, forest floor nutrient pools were 42–49% less in the high frequency fire than control treatment. Understory vegetation recovered rapidly and approximately 34 months following the last fire, understory biomass and nutrient pools were similar within the two treatments. However, the repeated use of prescribed fire effectively reduced the density of saplings which resulted in a 78–85% reduction in sapling biomass and nutrient pools in the high frequency fire compared to the control treatment. Chemistry of the surface (15 cm) mineral soil was similar in the two treatments indicating that the prescribed fires had little impact on the mineral soil. Periodic harvesting may have ameliorated changes in mineral soil P, Ca, or Mg availability that have been reported to occur with long-term, repeated application of prescribed fires in southern pine forests. Reductions in forest floor and sapling nutrient pools associated with the prescribed fire likely had little impact on tree productivity or soil sustainability since foliar nutrient concentrations of the overstory trees in the two treatments did not differ and the potential losses were small compared to surface soil pools. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64687
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Forestry and Natural Resources, University of Arkansas at Monticello, 110 University Ct., Monticello, AR, United States; U.S.D.A. Forest Service, Angeles National Forest, 701 N Santa Anita Ave., Arcadia, CA, United States
Recommended Citation:
Liechty H.O.,Hooper J.J.. Long-term effect of periodic fire on nutrient pools and soil chemistry in loblolly-shortleaf pine stands managed with single-tree selection[J]. Forest Ecology and Management,2016-01-01,380