scholarly journals Temperature sensitivity of plant litter decomposition rate in China's forests

Ecosphere ◽  
2021 ◽  
Vol 12 (6) ◽  
Author(s):  
Fan Zhang ◽  
Yuhao Feng ◽  
Shanshan Song ◽  
Qiong Cai ◽  
Chengjun Ji ◽  
...  
Keyword(s):  
Litter Decomposition ◽  
Temperature Sensitivity ◽  
Decomposition Rate ◽  
Plant Litter ◽  
Litter Decomposition Rate ◽  
Plant Litter Decomposition

scholarly journals Temperaturna odvisnost razgradnje opada v tleh travnikov v zaraščanju

2018 ◽  
Vol 111 (1) ◽  
pp. 189
Author(s):  
Marjetka SUHADOLC ◽  
Zalika ČREPINŠEK
Keyword(s):  
Mass Loss ◽  
Litter Decomposition ◽  
Air Temperature ◽  
Decomposition Rate ◽  
Lignin Content ◽  
Plant Litter ◽  
Litter Bags ◽  
Plant Litter Decomposition ◽  
Air Temperatures ◽  
The Difference

The aim of the study was to examine whether the effect of projected temperature rises due to the global climate change could accelerate plant litter decomposition in soils of overgrown grasslands. The experiment was carried out under natural conditions at the locations of Bohinj-Polje and Uskovnica with similar environmental conditions (precipitation, parent material and soil development, plant communities) and the difference in air temperatures. The average difference in monthly air temperatures during our study were higher in Bohinj for 4.4 °C (± 1.5 °C) than in Uskovnica. Nylon mesh bags with mixed plant litter from both locations were placed into the Of horizon of the soil profiles at both locations in autumn 2007. The litter bags were sampled successively at 4 sampling times until May 2009 in 5 replicates. The litter degradation, expressed as mass loss, was throughout our study 57.1 ± 1.2 % (0 - 526 days) in Bohinj, 57.3 ± 2.6 % (0 - 555 days) at Uskovnica. No statistically significant differences in litter decomposition rate and seasonal pattern of mass loss was found between the sites. The dynamics of the total content of cellulose and lignin, Corg and N and their soluble forms (DOC and DON) were similar between the sites as well. The lignin content in the plant material did not statistically significantly change during the experiment. The results of our experiment did not confirm the effect of the difference in average air temperature on decomposition rate decreases. The results did not confirm any effect from the difference in the average monthly air temperature between the sites on the plant litter decomposition in our study.

scholarly journals Deposition and decomposition of litter in periods of grazing and rest of a tropical pasture under rotational grazing

2019 ◽  
Vol 49 (12) ◽  
Author(s):  
Israel Oliveira Ramalho ◽  
Claudia de Paula Rezende ◽  
José Marques Pereira ◽  
Robert de Oliveira Macedo ◽  
Camila Almeida dos Santos ◽  
...  
Keyword(s):  
Litter Decomposition ◽  
Decomposition Rate ◽  
Rest Period ◽  
N Fertilization ◽  
Plant Litter ◽  
Rotational Grazing ◽  
Desmodium Ovalifolium ◽  
Litter Decomposition Rate ◽  
N Supply ◽  
Litter Deposition

ABSTRACT: The objectives of this study were to determine the rates of plant litter deposition and decomposition in Marandu pastures (Urochloa brizantha cv. Marandu) under a) three forms of nitrogen (N) supply, b) at different stages of rotational grazing and c) to compare the single-exponential decay constant (‘k’) derived from litterbags with values derived from estimates of deposited and existing litter (DEL technique). The three N supply treatments were: without or with N fertilization (zero or 150 kg N ha-1 yr-1) or with the legume Desmodium ovalifolium. There were no significant differences (p<0.05) between existing litter and rates of litter deposition and decomposition between the three N supply treatments. The litter decomposition rate was estimated using the DEL technique for the 7-day grazing periods and two subsequent 14-day periods in each 35-day grazing cycle. The litter decomposition rate was (P<0.05) higher for the second rest period (days 21 to 35) at 0.089 g g-1 day-1, than for the grazing period (0.038 g g-1 day-1) and for the first rest period (0.040 g g-1 day-1). The mean half-life of the litter was 12 days using the DEL technique while the estimate from the litterbags was 136 days. Results showed that estimates provided by litterbags severely underestimate the decomposition in relation to the DEL technique and predict a long-term accumulation of litter which is not observed.

scholarly journals Ignoring temperature variation leads to underestimation of the temperature sensitivity of plant litter decomposition

Ecosphere ◽  
2020 ◽  
Vol 11 (2) ◽  
Author(s):  
Nathan J. Tomczyk ◽  
Amy D. Rosemond ◽  
Phillip M. Bumpers ◽  
Carolyn S. Cummins ◽  
Seth J. Wenger ◽  
...  
Keyword(s):  
Temperature Variation ◽  
Litter Decomposition ◽  
Temperature Sensitivity ◽  
Plant Litter ◽  
Plant Litter Decomposition

scholarly journals Using plant litter decomposition as an indicator of ecosystem response to soil contamination

2021 ◽  
Vol 125 ◽  
pp. 107554
Author(s):  
Antoine Lecerf ◽  
Aurélie Cébron ◽  
Franck Gilbert ◽  
Michael Danger ◽  
Hélène Roussel ◽  
...  
Keyword(s):  
Soil Contamination ◽  
Litter Decomposition ◽  
Plant Litter ◽  
Ecosystem Response ◽  
Plant Litter Decomposition

Spatial Variability of Plant Litter Decomposition in Stream Networks: from Litter Bags to Watersheds

Ecosystems ◽  
2017 ◽  
Vol 21 (3) ◽  
pp. 567-581 ◽  
Author(s):  
Alan Mosele Tonin ◽  
Luiz Ubiratan Hepp ◽  
José Francisco Gonçalves
Keyword(s):  
Spatial Variability ◽  
Litter Decomposition ◽  
Plant Litter ◽  
Stream Networks ◽  
Litter Bags ◽  
Plant Litter Decomposition

scholarly journals Effects of Lime Application and Understory Removal on Soil Microbial Communities in Subtropical Eucalyptus L’Hér. Plantations

Forests ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 338 ◽  
Author(s):  
Songze Wan ◽  
Zhanfeng Liu ◽  
Yuanqi Chen ◽  
Jie Zhao ◽  
Qin Ying ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Litter Decomposition ◽  
Decomposition Rate ◽  
Environmental Changes ◽  
Soil Microbial Communities ◽  
Dissolved Carbon ◽  
Soil Microbial ◽  
Litter Decomposition Rate ◽  
Eucalyptus Plantations ◽  
Lime Application

Soil microorganisms play key roles in ecosystems and respond quickly to environmental changes. Liming and/or understory removal are important forest management practices and have been widely applied to planted forests in humid subtropical and tropical regions of the world. However, few studies have explored the impacts of lime application, understory removal, and their interactive effects on soil microbial communities. We conducted a lime application experiment combined with understory removal in a subtropical Eucalyptus L’Hér. plantation. Responses of soil microbial communities (indicated by phospholipid fatty acids, PLFAs), soil physico-chemical properties, and litter decomposition rate to lime and/or understory removal were measured. Lime application significantly decreased both fungal and bacterial PLFAs, causing declines in total PLFAs. Understory removal reduced the fungal PLFAs but had no effect on the bacterial PLFAs, leading to decreases in the total PLFAs and in the ratio of fungal to bacterial PLFAs. No interaction between lime application and understory removal on soil microbial community compositions was observed. Changes in soil microbial communities caused by lime application were mainly attributed to increases in soil pH and NO3–-N contents, while changes caused by understory removal were mainly due to the indirect effects on soil microclimate and the decreased soil dissolved carbon contents. Furthermore, both lime application and understory removal significantly reduced the litter decomposition rates, which indicates the lime application and understory removal may impact the microbe-mediated soil ecological process. Our results suggest that lime application may not be suitable for the management of subtropical Eucalyptus plantations. Likewise, understory vegetation helps to maintain soil microbial communities and litter decomposition rate; it should not be removed from Eucalyptus plantations.

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