Elevation Distribution of Fine Root Biomass and Soil Organic Carbon Storage of Mature Chinese Fir (Cunninghamia lanceolata) Plantations in East China

• Autorzy: Wang Qin , Teng Zhen , Wang Jingjing , Xie Xinyun , Xu Xiaoniu

Identyfikatory

DOI

10.3161/15052249PJE2020.68.1.007

• Języki publikacji: EN

Abstrakty

EN

Fine roots play an important role in productivity and dynamics of carbon and nutrient in forest ecosystems. The objective of this study is to reveal the elevational distribution patterns of fine-root (≤ 2 mm in diameter) biomass and its carbon and nitrogen stoichiometry, and the relationship between fine-root biomass and soil organic carbon storage in mature Chinese fir (Cunninghamia lanceolata) plantations (40-45 year old) in Mt. Dabie, eastern China. A field survey was conducted at five different sites along an elevation gradient from 360 m to 1200 m a.s.l. At each site, the sampling stands had similar density (from 1039 to 1238 stems ha^–1) with three replicates. The fine-root biomass was ranged from 264.3 to 331.9 g m^–2, with marginal significant correlation to elevation (P = 0.052). However, fine-root necromass was significantly decreased with elevation (P = 0.010). The C:N ratios ranged from 52.9 to 56.4 for living fine-roots and from 47.3 to 51.2 for dead ones, and showed an increasing trend over elevation gradient. Soil organic carbon (SOC) storages in the surface 50-cm soil layer ranged from 59.7 to 97.9 Mg ha^–1 and significantly increased with elevation (P < 0.001). Positive correlations were observed between fine-root biomass and SOC density across this elevation gradient. These results indicate that fine-root turnover might be an important regulation of SOC in the Chinese fir plantation.

Słowa kluczowe

EN

carbon density; Cunninghamia lanceolata; Chinese fir; elevation gradient; fine-root biomass; fine-root necromass; plantation; soil organic

PL

gęstość węgla; Cunninghamia lanceolata; stroigła chińska; gradient wysokości; biomasa drobnokorzeniowa; nekromasa drobnych korzeni; plantacja; gleba organiczna

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2020
• Tom: Vol. 68, nr 1
• Strony: 84--93
• Opis fizyczny: Bibliogr. 40 poz., tab., wykr.

Twórcy

autor

Wang Qin

• School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei 230036, PR China

autor

Teng Zhen

• School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei 230036, PR China

autor

Wang Jingjing

• School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei 230036, PR China

autor

Xie Xinyun

• School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei 230036, PR China
• School of Architecture & Urban Planning, Anhui Jianzhu University, Hefei 230022, PR China

autor

Xu Xiaoniu

• School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei 230036, PR China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).