DOI: 10.1016/j.foreco.2014.03.023
Scopus记录号: 2-s2.0-84899104031
论文题名: Temporal changes in SOM, N, P, K, and their stoichiometric ratios during reforestation in China and interactions with soil depths: Importance of deep-layer soil and management implications
作者: Wang W. ; Wang H. ; Zu Y.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 325 起始页码: 8
结束页码: 17
语种: 英语
英文关键词: Accumulation in surface soil
; Depletion in deep-layer soil
; Forest management
; Larix gmelinii
; Nutrient vertical transportation
Scopus关键词: Forestry
; Nutrients
; Reforestation
; Soils
; Intensive management
; Larix gmelinii
; Management implications
; Multivariate analysis of variances
; Stoichiometric ratio
; Surface soil
; Vertical distributions
; Vertical transportation
; Soil pollution
; concentration (composition)
; coniferous forest
; fertilizer application
; forest soil
; nitrogen
; nutrient availability
; phosphorus
; plantation forestry
; potassium
; reforestation
; soil depth
; soil fertility
; soil management
; soil nutrient
; soil organic matter
; stoichiometry
; Forest Management
; Larix Gmelinii
; Nutrients
; Pollution
; Reforestation
; Transport
; China
英文摘要: Rapid increases in the global area of plantation forests necessitate a fuller understanding of their effects on soil fertility for continuous management and nutrient supply. Stands of a forest type widely distributed in the northern hemisphere, larch (Larix gmelinii) plantations, of 3 age groups (<20. yr, 56 plots; 20-40. yr, 73 plots; >40. yr, 30 plots) were selected for the sampling of soil in 4 layers to 80. cm depth, and a total of 30 soil parameters (the concentration, storage, and vertical distribution of SOM; N; extractable N; P; extractable P; K; extractable K; and their stoichiometric ratios) were determined, and multivariate analysis of variance (MANOVA) with soil depth and age group as fixed factors was used to highlight the importance of deep-layer soil in reforestations. Nearly half of SOM, total N, extractable N were in surface 20. cm soil, while there were 60-80% of total P, extractable P, total K and extractable K in deep-layer soils (20-80. cm), indicating deep soil importance for P and K supply. The development of larch plantation forest could markedly affect 19 out of the 30 soil parameters (8 parameters showed different temporal changes between surface and deep-layer soils (P<. 0.05) and the other 11 parameters were similar at different soil layers (P>. 0.05)). SOM at the surface layer (0-20. cm) in >40-yr age-group was 36% higher than <20-yr age group, while in 60-80. cm soil, decreases of 35-37% were observed, these resulted in a much moderate increase in SOM concentration on overall 80. cm soil profile; Concentration and storage of total N, total P and their extractable forms experienced a mid-age (20-40-yr age group) peak when considering the overall 80. cm soil column, and the lowest values were in >40-yr age group, and their depletion was respectively 20-25%, 29-30%, 33-37% and 79-86%. All these resulted in an uplifting tendency of SOM, total N, and total P with tree age (P<. 0.05) except total K (no changes). Although the larch is typically a shallow-rooted tree species, our findings indicate that soil deeper than that penetrated by most roots is still sensitive to larch growth, and the most likely age group for marked fertility changes was in the >40-yr age group. These fertility changes and the time-period for nutrient depletion are crucial for intensive management (fertilization) and budget estimation, and more attention should be paid to deep-layer soils. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65928
Appears in Collections: 影响、适应和脆弱性
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作者单位: Urban Forests and Wetlands Research Group, Key Laboratory of Wetland Ecology and Environment, Institute of Northeast Geography and Agroecology, CAS, Changchun 130102, China; Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China
Recommended Citation:
Wang W.,Wang H.,Zu Y.. Temporal changes in SOM, N, P, K, and their stoichiometric ratios during reforestation in China and interactions with soil depths: Importance of deep-layer soil and management implications[J]. Forest Ecology and Management,2014-01-01,325