DOI: 10.1016/j.foreco.2017.04.022
Scopus记录号: 2-s2.0-85019839179
论文题名: Calcium is cycled tightly in Cryptomeria japonica stands on soils with low acid buffering capacity
作者: Tanikawa T. ; Ito Y. ; Fukushima S. ; Yamashita M. ; Sugiyama A. ; Mizoguchi T. ; Okamoto T. ; Hirano Y.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 399 起始页码: 64
结束页码: 73
语种: 英语
英文关键词: Fractionation
; High-resolution X-ray fluorescence spectrometry
; Plant-soil interaction
; Plantation forest
; Soil acidification
; Species specific trait
Scopus关键词: Acidification
; Calcium
; Emission spectroscopy
; Fluorescence
; Fluorescence spectroscopy
; Forestry
; Fractionation
; Soils
; Spectrometry
; Plant-soil interactions
; Plantation forests
; Soil acidifications
; Species-specific traits
; X ray fluorescence spectrometry
; Soil pollution
; Cryptomeria japonica
英文摘要: Calcium (Ca) is a key cation in the soil acidification process and in the fertility of forest soils. We investigated total concentrations of Ca, magnesium (Mg), and potassium (K) in both soil and fresh leaf litter in eight plantation stands of Cryptomeria japonica divided into two groups of highly contrasting soil acid buffering capacity (ABC). In addition to conventional methods, we used a double-crystal high resolution X-ray fluorescence (HRXRF) spectrometer to determine Ca fractions in soils with low and high ABC. Total Ca had accumulated in the 0–10 cm depth horizons of the high-ABC soils, but not in the low-ABC soils. The exchangeable Ca concentration was correlated with total Ca concentration in the 0–10 cm depth of the low-ABC soils. Calcium-Kα1,2 emission spectra of the 0–10 cm soils obtained by HRXRF spectrometry separated the total Ca into two fractions, suggesting that the predominant Ca constituents had either passed through biological processes or were derived from weathering hydration in both the high- and low-ABC soils. Calcium concentration in the fresh leaf litter was significantly lower in the stands with low-ABC soil than in those with high-ABC soil and was positively correlated with soil exchangeable Ca concentration in the low-ABC stands; no such correlation was observed in the high-ABC stands. Exchangeable Ca pools in the 0–10 cm depth range were equal to or less than the annual input of Ca via leaf litterfall in the low-ABC stands, but were seven times the annual input in the high-ABC soils. These results suggested that the accumulation of Ca in the upper soil occurs via the process of Ca circulation within C. japonica ecosystems, and that sufficient supply of Ca for tree needs was accompanied by the large accumulation of available Ca by C. japonica in the high-ABC soils. Nevertheless, it is likely that only small amounts of Ca were circulated in the stands on low-ABC soil. The lack of Ca accumulation in the surface soil and the accompanying tight circulation of Ca in the plant–soil system may explain the observed positive feedback in which ABC is gradually reduced in low-ABC soils. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64283
Appears in Collections: 影响、适应和脆弱性
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作者单位: Kansai Research Center, Forestry and Forest Products Research Institute, Nagai-kyutaro, Momoyama, Fushimi, Kyoto, Japan; Atomic & Molecular Physics Laboratory, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, Japan; Advanced Surface Chemical Analysis G., National Institute for Materials Science, 1-2-1 Sengen, Tsukuba-shi, Ibaraki, Japan; Hyogo Prefectural Institute of Technology, 3-1-12 Yukihira-cho, Suma-ku, Kobe, Hyogo, Japan; Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, Japan; Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
Recommended Citation:
Tanikawa T.,Ito Y.,Fukushima S.,et al. Calcium is cycled tightly in Cryptomeria japonica stands on soils with low acid buffering capacity[J]. Forest Ecology and Management,2017-01-01,399