scholarly journals Early Stage Fine-Root Decomposition and Its Relationship with Root Order and Soil Depth in a Larix gmelinii Plantation

Forests ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 234 ◽  
Author(s):  
Tao Sun ◽  
Lili Dong ◽  
Lili Zhang ◽  
Zhijie Wu ◽  
Qingkui Wang ◽  
...  
Keyword(s):  
Fine Root ◽  
Early Stage ◽  
Soil Depth ◽  
Larix Gmelinii ◽  
Root Decomposition ◽  
Root Order ◽  
Fine Root Decomposition

Fine root decomposition and N dynamics of Larix gmelinii at different soil depths

2019 ◽  
Vol 39 (13) ◽  
Author(s):  
温璐宁 WEN Luning ◽  
张红光 ZHANG Hongguang ◽  
孙涛 SUN Tao ◽  
张子嘉 ZHANG Zijia ◽  
昝鹏 ZAN Peng ◽  
...  
Keyword(s):  
Fine Root ◽  
Larix Gmelinii ◽  
Root Decomposition ◽  
N Dynamics ◽  
Fine Root Decomposition

scholarly journals Heterogeneity in Decomposition Rates and Nutrient Release in Fine-Root Architecture of Pinus massoniana in the Three Gorges Reservoir Area

Forests ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 14
Author(s):  
Shao Yang ◽  
Ruimei Cheng ◽  
Wenfa Xiao ◽  
Yafei Shen ◽  
Lijun Wang ◽  
...  
Keyword(s):  
Lower Order ◽  
Fine Root ◽  
C:N Ratio ◽  
Pinus Massoniana ◽  
Higher Order ◽  
Root Decomposition ◽  
Decomposition Rates ◽  
N Release ◽  
Residual N ◽  
Fine Root Decomposition

Fine-root decomposition contributes a substantial amount of nitrogen that sustains both plant productivity and soil metabolism, given the high turnover rates and short root life spans of fine roots. Fine-root decomposition and soil carbon and nitrogen cycling were investigated in a 1-year field litterbag study on lower-order roots (1–2 and 3–4) of Pinus massoniana to understand the mechanisms of heterogeneity in decomposition rates and further provide a scientific basis for short-time research on fine-root decomposition and nutrient cycling. Lower-order roots had slower decay rates compared with higher-order roots (5–6). A significantly negative correlation was observed between the decay constant mass remaining and initial N concentrations as well as acid unhydrolyzable residues. Results also showed that in lower-order roots (orders 1–2 and 3–4) with a lower C:N ratio, root residual N was released and then immobilized, whereas in higher-order roots (order 5–6) with a higher C:N ratio, root residual N was immobilized and then released in the initial stage. In the later stage, N immobilization occurred in lower-order roots and N release in higher-order roots, with the C:N ratio gradually decreasing to about 40 in three branching-order classes and then increasing. Our results suggest that lower-order roots decompose more slowly than higher-order roots, which may result from the combined effects of high initial N concentration and poor C quality in lower-order roots. During the decomposition of P. massoniana, N release or N immobilization occurred at the critical C:N ratio.

scholarly journals Global patterns in fine root decomposition: climate, chemistry, mycorrhizal association and woodiness

2019 ◽  
Vol 22 (6) ◽  
pp. 946-953 ◽  
Author(s):  
Craig R. See ◽  
Michael Luke McCormack ◽  
Sarah E. Hobbie ◽  
Habacuc Flores‐Moreno ◽  
Whendee L. Silver ◽  
...  
Keyword(s):  
Fine Root ◽  
Root Decomposition ◽  
Mycorrhizal Association ◽  
Global Patterns ◽  
Fine Root Decomposition

Fine root decomposition, nutrient mobilization and fungal communities in a pine forest ecosystem

2015 ◽  
Vol 83 ◽  
pp. 76-83 ◽  
Author(s):  
Ang Li ◽  
Timothy J. Fahey ◽  
Teresa E. Pawlowska ◽  
Melany C. Fisk ◽  
James Burtis
Keyword(s):  
Forest Ecosystem ◽  
Fine Root ◽  
Pine Forest ◽  
Fungal Communities ◽  
Root Decomposition ◽  
Nutrient Mobilization ◽  
Fine Root Decomposition

Effects of phosphorus addition on fine root decomposition and enzyme activity of Castanopsis carlesii and Cunninghamia lanceolata in subtropical forest

2017 ◽  
Vol 37 (1) ◽  
Author(s):  
洪慧滨 HONG Huibin ◽  
林成芳 LIN Chengfang ◽  
彭建勤 PENG Jianqin ◽  
陈岳民 CHEN Yuemin ◽  
魏翠翠 WEI Cuicui ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Fine Root ◽  
Subtropical Forest ◽  
Cunninghamia Lanceolata ◽  
Root Decomposition ◽  
Phosphorus Addition ◽  
Fine Root Decomposition

Direct and indirect effects of nitrogen additions on fine root decomposition in a subtropical bamboo forest

2014 ◽  
Vol 389 (1-2) ◽  
pp. 273-288 ◽  
Author(s):  
Li-hua Tu ◽  
Yong Peng ◽  
Gang Chen ◽  
Hong-ling Hu ◽  
Yin-long Xiao ◽  
...  
Keyword(s):  
Indirect Effects ◽  
Fine Root ◽  
Root Decomposition ◽  
Bamboo Forest ◽  
Direct And Indirect Effects ◽  
Fine Root Decomposition ◽  
Nitrogen Additions

scholarly journals Effect of Root and Mycelia on Fine Root Decomposition and Release of Carbon and Nitrogen Under Artemisia halodendron in a Semi-arid Sandy Grassland in China

2021 ◽  
Vol 12 ◽  
Author(s):  
Xinping Liu ◽  
Yongqing Luo ◽  
Li Cheng ◽  
Hongjiao Hu ◽  
Youhan Wang ◽  
...  
Keyword(s):  
Fine Roots ◽  
Fine Root ◽  
Organic N ◽  
Root Turnover ◽  
Root Decomposition ◽  
Soil System ◽  
Nitrate N ◽  
Artemisia Halodendron ◽  
Fine Root Decomposition ◽  
Semi Arid

Plant fine root turnover is a continuous process both spatially and temporally, and fine root decomposition is affected by many biotic and abiotic factors. However, the effect of the living roots and the associated mycorrhizal fungal mycelia on fine root decomposition remains unclear. The objective of this study is to explore the influence of these biotic factors on fine root decomposition in a semi-arid ecosystem. In this study, we investigated the effect of fine roots and mycelia on fine root decomposition of a pioneer shrub (Artemisia halodendron) in Horqin sandy land, northeast China, by the ingrowth core method combined with the litterbag method. Litterbags were installed in cores. Results showed that core a allowed the growth of both fine roots and mycelia (treatment R + M), core b only allowed the growth of mycelia (treatment M), and in core c the fine root and mycelia growth were restricted and only bulk soil was present (treatment S). These findings suggest that the process of root decomposition was significantly affected by the living roots and mycelia, and carbon (C) and nitrogen (N) concentration dynamics during root decomposition differed among treatments. Mycelia significantly stimulated the mass loss and C and N release during root decomposition. Treatment R + M significantly stimulated the accumulation of soil total C, total N, and organic N under litterbags. The mycelia significantly stimulated the accumulation of the inorganic N (ammonium-N and nitrate-N) but the presence of fine roots weakened nitrate-N accumulation. The presence of living roots and associated mycelia strongly affected the process of root decomposition and matter release in the litter-soil system. The results of this study should strengthen the understanding of root-soil interactions.

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