Relationship between soil acidification and nutrient cycling in a forest ecosystem on Volcanogenous Regosols in Hokkaido, northern Japan

1997 ◽  
pp. 547-548
Author(s):  
H. Shibata ◽  
Y. Tanaka ◽  
T. Sakuma ◽  
R. Hatano
Keyword(s):  
Nutrient Cycling ◽  
Forest Ecosystem ◽  
Soil Acidification ◽  
Northern Japan

scholarly journals Analysis and Prediction of Soil Acidification Considering Some Processes in a Forest Ecosystem

1998 ◽  
Vol 6 ◽  
pp. 69-74
Author(s):  
Masato Horiuchi ◽  
Eitaro Yui ◽  
Shinsuke Morisawa
Keyword(s):  
Forest Ecosystem ◽  
Soil Acidification

The proton cycle of a deciduous forest ecosystem in the Netherlands and its implications for soil acidification

1990 ◽  
Vol 127 (1) ◽  
pp. 61-69 ◽  
Author(s):  
J. M. Verstraten ◽  
J. C. R. Dopheide ◽  
J. J. H. M. Duysings ◽  
A. Tietema ◽  
W. Bouten
Keyword(s):  
The Netherlands ◽  
Forest Ecosystem ◽  
Soil Acidification ◽  
Deciduous Forest

scholarly journals Chemical characteristics of gypsy moth larvae excrement and their possible impact on soil properties in the total defoliation period

2014 ◽  
pp. 41-46
Author(s):  
Zoran Miletić ◽  
Mara Tabaković-Tošić ◽  
Snežana Stajić ◽  
Zlatan Radulović ◽  
Saša Eremija ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Gypsy Moth ◽  
Forest Ecosystem ◽  
Fractional Composition ◽  
Chemical Properties ◽  
Chemical Characteristics ◽  
Forest Trees ◽  
Macro Elements ◽  
Oak Leaves ◽  
Fractional Composition Of Humus

Chemical properties of gypsy moth larvae excrement were analysed with an objective to ascertain their possible impact on forest ecosystem nutrient cycling. The content of nutrition macro-elements in excrements was determined and compared to the content of nutrition macro-elements in oak leaves. The content of nitrogen mineral forms in excrements and group-fractional composition of humus were determined. It was established that during the total defoliation period there had been no loss of nutrient in the ecosystem. The properties of dropped and incorporated excrements are such that in the period of new leave formation after the total defoliation provide a sufficient amount of nutrients for forest trees.

scholarly journals Diagnostic Assessment and Restoration Plan for Damaged Forest around the Seokpo Zinc Smelter, Central Eastern Korea

Forests ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 663
Author(s):  
Areum Kim ◽  
Bongsoon Lim ◽  
Jaewon Seol ◽  
Chihong Lim ◽  
Younghan You ◽  
...  
Keyword(s):  
Forest Ecosystem ◽  
Soil Acidification ◽  
Pinus Densiflora ◽  
Satellite Image ◽  
Diagnostic Assessment ◽  
Exchangeable Cation ◽  
Soil Amelioration ◽  
Natural Forests ◽  
Reference Information ◽  
Vegetation Damage

Research Highlights: This study was carried out to diagnose the forest ecosystem damaged by air pollution and to then develop a restoration plan to be used in the future. The restoration plan was prepared by combining the diagnostic assessment for the damaged forest ecosystem and the reference information obtained from the conservation reserve with an intact forest ecosystem. The restoration plan includes the method for the amelioration of the acidified soil and the plant species to be introduced for restoration of the damaged vegetation depending on the degree of damage. Background and Objectives: The forest ecosystem around the Seokpo smelter was so severely damaged that denuded lands without any vegetation appear, and landslides continue. Therefore, restoration actions are urgently required to prevent more land degradation. This study aims to prepare the restoration plan. Materials and Methods: The diagnostic evaluation was carried out through satellite image analysis and field surveys for vegetation damage and soil acidification. The reference information was obtained from the intact natural forest ecosystem. Results: Vegetation damage was severe near the pollution source and showed a reducing trend as it moved away. The more severe the vegetation damage, the more acidic the soil was, and thereby the exchangeable cation content and vegetation damage were significantly correlated. The restoration plan was prepared by proposing a soil amelioration method and the plants to be introduced. The soil amelioration method focuses on ameliorating acidified soil and supplementing insufficient nutrients. The plants to be introduced for restoring the damaged forest ecosystem were prepared by compiling the reference information, the plants tolerant to the polluted environment, and the early successional species. The restoration plan proposed the Pinus densiflora, Quercus mongolica, and Cornuscontroversa–Juglansmandshurica communities as the reference conditions for the ridge, slope, and valley, respectively, by reflecting the topographic condition. Conclusions: The result of a diagnostic assessment showed that ecological restoration is required urgently as vegetation damage and soil acidification are very severe. The restoration plan was prepared by compiling the results of these diagnostic assessments and reference information collected from intact natural forests. The restoration plan was prepared in the two directions of soil amelioration and vegetation restoration.

Leaf litter diversity alters microbial activity, microbial abundances, and nutrient cycling in a subtropical forest ecosystem

2017 ◽  
Vol 134 (1-2) ◽  
pp. 163-181 ◽  
Author(s):  
Zhiqin Pei ◽  
Katrin N. Leppert ◽  
David Eichenberg ◽  
Helge Bruelheide ◽  
Pascal A. Niklaus ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Microbial Activity ◽  
Leaf Litter ◽  
Forest Ecosystem ◽  
Subtropical Forest ◽  
Litter Diversity

scholarly journals Mutual effects between Pinus armandii and broadleaf litter during mixed decomposition

2019 ◽  
Vol 88 (3) ◽  
Author(s):  
Xiaoxi Zhang ◽  
Boya Wang ◽  
Zengwen Liu
Keyword(s):  
Nutrient Cycling ◽  
Polyphenol Oxidase ◽  
Forest Ecosystem ◽  
Eucommia Ulmoides ◽  
Litter Type ◽  
Inhibitory Effects ◽  
Short Term ◽  
Planted Forests ◽  
Biomass Dynamics ◽  
Underlying Mechanisms

Mixed-decomposition effects are commonly observed in natural and planted forests and affect nutrient cycling in a forest ecosystem. However, how one litter type affects the decomposition of another is still poorly understood. In this study, <em>Pinus armandii</em> litter was mixed with <em>Betula albosinensis</em>, <em>Catalpa fargesii</em>, <em>Populus purdomii</em>, <em>Eucommia ulmoides</em>, and <em>Acer tsinglingense</em> litter. The mixtures were placed in litterbags and buried in soil with consistent moisture for a 180-day indoor simulated decomposition experiment. The litterbags were periodically harvested during decomposition; the litter residues of different species were separated, and the biomass dynamics of each litter type were simulated. In addition, the soil sucrase, cellulase and polyphenol oxidase activities were also detected three times. The mutual effects of needle and broadleaf litter during mixed decomposition and the possible underlying mechanisms were investigated. The results indicated that (i) during the decomposition experiment, <em>P. armandii</em> needles significantly inhibited the decomposition of broadleaf litter in the first 3 months, while the broadleaf litter accelerated the decomposition of <em>P. armandii</em> needles in only approximately 40% of the cases. However, the inhibitory effects of needles on broadleaf litter decomposition subsequently exhibited significant weakening, while the accelerating effects of broadleaf litter were significantly enhanced. The effects of mixed decomposition on the activities of three enzymes can only partially explain the interactions between different litter types; (ii) the prediction by the decomposition model showed that most of the broadleaf litter types could continuously accelerate the decomposition of <em>P. armandii</em> needles throughout the mixed decomposition process, while the decomposition of broadleaf litter would be significantly inhibited at least in the short term. In general, four of the five broadleaf litter types (excluding <em>E. ulmoides</em>) could accelerate the early decomposition of <em>P. armandii</em> needles and consequently accelerate nutrient cycling in <em>P. armandii</em> pure forests. These species could be used for the transformation of pure <em>P. armandii</em> pure forests to mixed forests.

Nutrient cycling from theMusamother plant at various physiological stages to suckers as affected by spacing and sucker retention using tracer techniques

Fruits ◽  
2002 ◽  
Vol 57 (3) ◽  
pp. 143-151 ◽  
Author(s):  
Sajan Kurien ◽  
Paickattumana Suresh Kumar ◽  
Nerukavil Varieth Kamalam ◽  
Pallacken Abdul Wahid
Keyword(s):  
Nutrient Cycling ◽  
Tracer Techniques
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