DOI: 10.1016/j.foreco.2012.10.047
Scopus记录号: 2-s2.0-84871830352
论文题名: Effects of timber harvest intensity on macronutrient cycling in oak-dominated stands on sandy soils of northwest Wisconsin
作者: Wilhelm K. ; Rathsack B. ; Bockheim J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 291 起始页码: 1
结束页码: 12
语种: 英语
英文关键词: Forest harvest
; Forest management
; Forest soils
; Nutrient cycling
; Nutrient depletion
Scopus关键词: Above ground biomass
; Accumulation rates
; Bulk precipitation
; Dry matters
; First year
; Forest harvest
; Forest soils
; Harvest treatments
; Leaching loss
; N mineralization
; Nitrogen accumulation
; Nutrient accumulation
; Nutrient cycling
; Nutrient depletion
; Nutrient input-output
; Oak-dominated stands
; Postharvest
; Sandy soils
; State forests
; Timber harvesting
; Timber harvests
; Whole-tree harvest
; WISCONSIN
; Calcium
; Ecosystems
; Forestry
; Harvesting
; Lakes
; Leaching
; Logging (forestry)
; Mineralogy
; Nitrogen removal
; Phosphorus
; Sand
; Soils
; Nutrients
; aboveground biomass
; bioaccumulation
; biofuel
; chemical weathering
; deciduous tree
; forest management
; forest soil
; mineralization
; nutrient cycling
; phosphorus
; pollutant removal
; precipitation (climatology)
; sandy soil
; soil nutrient
; stand structure
; timber harvesting
; Calcium
; Ecosystems
; Forest Management
; Forestry
; Harvesting
; Lakes
; Leaching
; Logging
; Nutrients
; Phosphorus
; Sand
; Soil
; United States
; Wisconsin
英文摘要: In Wisconsin there is concern that timber harvesting on nutrient-poor, sandy soils could lead to depletion of nutrients. This concern could become exacerbated by the increasing demand for biofuels, followed by intensified utilization practices. This project measured dry matter and macronutrient (N, P, K, Ca, and Mg) pools and major inputs (bulk precipitation, weathering+mineralization index) and outputs (leaching losses) on four treatment plots at each of five sites on sandy soils at the Governor Knowles State Forest in northwest Wisconsin: an unharvested treatment, a conventional removal of stem and branches down to a diameter of 5cm, a removal of stem and branches down to a diameter of 10cm, a removal of all aboveground biomass. All treatments were applied during the early winter, leaf-off period. Data collected over 2years (2010 and 2011) were applied to a nutrient-balance equation to determine if there were treatment-related differences in nutrient accumulation or depletion. The labile soil was the leading pre- and post-harvest pool for P, K, Ca and Mg in the ecosystem. Biomass removed during Whole-tree harvests constituted ∼50% of the ecosystem nitrogen and contributed significantly to the removal of the other macronutrients. From nutrient input-output balances, N (NH4 and NO3), K, Ca, and Mg were calculated to be accumulating on all harvest treatments. During the first year after harvest (2010), N mineralization, along with P and Ca accumulation rate, was significantly greater than unharvested treatments. Nitrogen accumulation rates, along with leaching losses of N and P, were significantly lower on all harvest treatments than on unharvested treatments. There were no significant differences in mineralization rates and leaching losses among treatments for the other macronutrients. During the second year (2011), differences in N mineralization, leaching and accumulation rates had largely disappeared. Phosphorus was the only nutrient that showed a net depletion, and this depletion was detected for all harvested treatments. However, the depletion rates were so low that it would take several rotations for any P deficiencies to become apparent. The results of this study may not apply to other sandy soils. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66773
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Soil Science, University of Wisconsin, 1525 Observatory Drive, Madison, WI 53706-1299, United States
Recommended Citation:
Wilhelm K.,Rathsack B.,Bockheim J.. Effects of timber harvest intensity on macronutrient cycling in oak-dominated stands on sandy soils of northwest Wisconsin[J]. Forest Ecology and Management,2013-01-01,291