Influence of adjacent stand on spatial patterns of soil carbon and nitrogen in Eucalyptus and Albizia plantations

1996 ◽  
Vol 26 (8) ◽  
pp. 1501-1503 ◽  
Author(s):  
Brent Ewers ◽  
Dan Binkley ◽  
Michael Bashkin
Keyword(s):  
Spatial Patterns ◽  
Forest Soils ◽  
Soil Chemistry ◽  
Total Carbon ◽  
Mixed Species ◽  
Mixture Ratio ◽  
Carbon And Nitrogen ◽  
Spatial Influence ◽  
First Approximation ◽  
Species Mixture

The chemistry and fertility of forest soils can be strongly influenced by tree species. Many studies have addressed the effects of monocultures on forest soil chemistry, but few have examined the effects of varying ratios of species within stands. In the absence of well-designed trials across a range of mixture ratios, we examined the spatial influence of adjacent stands on soil chemistry as a first approximation of the effect of mixed-species stands. We examined soil total carbon (C), nitrogen (N), and C/N along transects in adjacent, replicated, 12-year-old plantations of pure Eucalyptussaligna (Sm.) and pure N2-fixing Albiziafalcataria (L.) Fosberg. Soils from the center of the Eucalyptus stands had more C, less N, and higher C/N than soils from the center of the Albizia stands. The effects of the neighbor species were apparent for only about 5 m into the stands. This limited distance of the neighboring plot effect suggests that a species mixture ratio of 5:1 would be the highest ratio that would show any effect of the minor species on these soils.

Repeated freeze–thaw cycles increase extractable, but not total, carbon and nitrogen in a Maine coniferous soil

Geoderma ◽  
2021 ◽  
Vol 402 ◽  
pp. 115353
Author(s):  
Kaizad F. Patel ◽  
Corianne Tatariw ◽  
Jean D. MacRae ◽  
Tsutomu Ohno ◽  
Sarah J. Nelson ◽  
...  
Keyword(s):  
Total Carbon ◽  
Carbon And Nitrogen ◽  
Freeze Thaw

scholarly journals Effects of Dolomite Liming on Soil Chemistry in Acidic Forest Soils

2003 ◽  
Vol 26 (6) ◽  
pp. 327-333 ◽  
Author(s):  
Chang-Gi Kim ◽  
Tae-Cheol Rhyu ◽  
Joon-Ho Kim
Keyword(s):  
Forest Soils ◽  
Soil Chemistry

scholarly journals First in situ estimations of small phytoplankton carbon and nitrogen uptake rates in the Kara, Laptev, and East Siberian seas

2018 ◽  
Author(s):  
Bhavya P. Sadanandan ◽  
Jang Han Lee ◽  
Ho Won Lee ◽  
Jae Joong Kaang ◽  
Jae Hyung Lee ◽  
...  
Keyword(s):  
Sea Ice ◽  
Nitrogen Uptake ◽  
N Uptake ◽  
Total Carbon ◽  
The Arctic ◽  
Carbon And Nitrogen ◽  
Uptake Rates ◽  
Wide Range ◽  
Small Phytoplankton

Abstract. Carbon and nitrogen uptake rates by small phytoplankton (0.7–5 μm) in the Kara, Laptev, and East Siberian seas in the Arctic Ocean were quantified using in situ isotope labelling experiments for the first time as part of the NABOS (Nansen and Amundsen Basins Observational System) program during August 21 to September 22, 2013. The depth integrated C, NO3−, and NH4+ uptake rates by small phytoplankton showed a wide range from 0.54 to 15.96 mg C m−2 h−1, 0.05 to 1.02 and 0.11 to 3.73 mg N m−2 h−1, respectively. The contributions of small phytoplankton towards the total C, NO3−, and NH4+ was varied from 24 to 89 %, 32 to 89 %, and 28 to 89 %, respectively. The turnover times for NO3− and NH4+ by small phytoplankton during the present study point towards the longer residence times (years) of the nutrients in the deeper waters, particularly for NO3−. Relatively, higher C and N uptake rates by small phytoplankton obtained during the present study at locations with less sea ice concentrations points towards the possibility of small phytoplankton thrive under sea ice retreat under warming conditions. The high contributions of small phytoplankton towards the total carbon and nitrogen uptake rates suggest capability of small size autotrophs to withstand in the adverse hydrographic conditions introduced by climate change.

Total carbon and nitrogen stocks under different land use/land cover types in the Southwestern region of Nigeria

2020 ◽  
Vol 22 ◽  
pp. e00320
Author(s):  
Idowu Ezekiel Olorunfemi ◽  
Johnson Toyin Fasinmirin ◽  
Ayorinde Akinlabi Olufayo ◽  
Akinola Adesuji Komolafe
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Total Carbon ◽  
Land Use Land Cover ◽  
Land Cover Types ◽  
Carbon And Nitrogen ◽  
Carbon And Nitrogen Stocks

scholarly journals Three Invasive Tree Species Change Soil Chemistry in Guam Forests

Forests ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 279 ◽  
Author(s):  
Thomas E. Marler
Keyword(s):  
Tree Species ◽  
Soil Chemistry ◽  
Chemical Properties ◽  
Total Carbon ◽  
Tree Cover ◽  
Available Phosphorus ◽  
Nitrogen And Phosphorus ◽  
Invasive Tree ◽  
Invasive Tree Species ◽  
Forms Of Carbon

Research Highlights: Established stands of Leucaena leucocephala (Lam.) de Wit, Spathodea campanulata P. Beauv., and Vitex parviflora Juss. modified soils in Guam’s limestone forests, reducing storage pools of carbon, nitrogen, and phosphorus. Background and Objectives: Invasive plants may engineer negative changes in ecosystem properties. This study was conducted to determine changes in soil chemistry following infestations of three problematic tree species on Guam. Materials and Methods: Minerals, metals, and mineralization dynamics were measured in invaded sites and paired sites with biodiverse native tree cover. Results: Most soil properties were significantly changed by long-term infestations of the invasive tree species. The soils within invaded sites exhibited total carbon, total nitrogen, and available phosphorus that were less than native sites. In contrast, the carbon/nitrogen ratio increased for every species-site combination. The other chemical properties were idiosyncratic among the sites and species. Conclusions: Mitigation and restoration activities that include the removal of these trees from project sites may require many years for the below-ground ecosystems to return to their native state. These three invasive trees decrease the ability of Guam soils to sequester recalcitrant forms of carbon, nitrogen, and phosphorus.

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