scholarly journals Soil stoichiometry modulates effects of shrub encroachment on soil carbon concentration and stock in a subalpine grassland

2020 ◽  
Vol 13 (1) ◽  
pp. 65-72 ◽  
Author(s):  
L Ding ◽  
P Wang ◽  
W Zhang ◽  
Y Zhang ◽  
S Li ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Concentration ◽  
Shrub Encroachment ◽  
Soil Stoichiometry

scholarly journals Variations in soil carbon, nitrogen, phosphorus and stoichiometry along forest succession in southern China

2017 ◽  
Author(s):  
Shuai Ouyang ◽  
Wenhua Xiang ◽  
Mengmeng Gou ◽  
Pifeng Lei ◽  
Liang Chen ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Forest Succession ◽  
Southern China ◽  
Floristic Composition ◽  
Soil Samples ◽  
Variation Patterns ◽  
Soil Stoichiometry ◽  
And Storage ◽  
Composition Changes ◽  
Nitrogen Phosphorus

Abstract. Floristic composition changes during forest succession influence nutrient cycling. However, variation patterns of soil carbon (C), nitrogen (N), and phosphorous (P), and soil stoichiometry (C : N, C : P, and N : P ratios) along forest succession are controversial. In this study, soil samples were collected at depths of 0–10, 10–20, and 20–30 cm in three forests at early, middle, and late succession stages. Concentrations of soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) were measured. As succession proceeds, concentrations and storage of SOC and TN exhibited a significant increasing tendency, while those of TP decreased significantly. The tendency was more pronounced (P 

scholarly journals Sugarcane straw decomposition and carbon balance as a function of initial biomass and vinasse addition to soil surface

Bragantia ◽  
2017 ◽  
Vol 76 (1) ◽  
pp. 135-144 ◽  
Author(s):  
Carina Sayuri Yamaguchi ◽  
Nilza Patrícia Ramos ◽  
Cristina Silva Carvalho ◽  
Adriana Marlene Moreno Pires ◽  
Cristiano Alberto de Andrade
Keyword(s):  
Soil Carbon ◽  
Carbon Concentration ◽  
Decomposition Rate ◽  
Soil Layer ◽  
Soil Surface ◽  
Soil Samples ◽  
Water Retention Capacity ◽  
Straw Decomposition ◽  
Retention Capacity ◽  
Sugarcane Straw

ABSTRACT The objective of this study was to evaluate sugarcane straw decomposition and the potential of increasing soil carbon as a function of the initial biomass and vinasse addition to soil surface. The experimente consisted of incubation (240 days, in the dark, humidity equivalent to 70% of soil water retention capacity and average temperature of 28 °C) of Oxisol soil samples (0-20 cm soil layer) with straw added to soil surface at rates of 2; 4; 8; 16 and 24 t∙ha−1 and with or without vinasse addition (200 m3∙ha-1). The following variables were determined: released C-CO2, remaining straw dry matter, carbon straw and soil carbon concentration. The added biomass did not influence straw decomposition rate, but vinasse treatments provided rates between 70 and 94% compared to 68 to 75% for the ones without vinasse. The straw (16 and 24 t∙ha−1) decomposition rate increased between 14 and 35% due to vinasse addition, but the same behavior was not observed for released C-CO2. This result was explained by the twofold increase of soil carbon concentration, estimated by mass balance and confirmed analytically by the carbon concentration of soil samples. It was concluded that sugarcane straw decomposition, under no limiting conditions of humidity and temperature, did not depend on biomass initially added and that vinasse addition accelerated straw decomposition and potentialized carbon input into the soil.

Unexpected control of soil carbon turnover by soil carbon concentration

2013 ◽  
Vol 11 (4) ◽  
pp. 407-413 ◽  
Author(s):  
Axel Don ◽  
Christian Rödenbeck ◽  
Gerd Gleixner
Keyword(s):  
Soil Carbon ◽  
Carbon Concentration ◽  
Carbon Turnover ◽  
Soil Carbon Turnover

CLIMATIC/EDAPHIC CONTROLS ON SOIL CARBON/NITROGEN RESPONSE TO SHRUB ENCROACHMENT IN DESERT GRASSLAND

2007 ◽  
Vol 17 (7) ◽  
pp. 1911-1928 ◽  
Author(s):  
C. Winston Wheeler ◽  
Steven R. Archer ◽  
Gregory P. Asner ◽  
Chad R. McMurtry
Keyword(s):  
Soil Carbon ◽  
Shrub Encroachment ◽  
Desert Grassland ◽  
Nitrogen Response

Shrub encroachment increases soil carbon and nitrogen stocks in temperate grasslands in China

2019 ◽  
Vol 30 (7) ◽  
pp. 756-767 ◽  
Author(s):  
He Li ◽  
Haihua Shen ◽  
Luhong Zhou ◽  
Yankun Zhu ◽  
Leiyi Chen ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Shrub Encroachment ◽  
Temperate Grasslands ◽  
Carbon And Nitrogen ◽  
Soil Carbon And Nitrogen ◽  
Carbon And Nitrogen Stocks

Estimates of soil carbon concentration in tropical and temperate forest and woodland from available GIS data on three continents

2012 ◽  
Vol 22 (4) ◽  
pp. 461-469 ◽  
Author(s):  
Brenton Ladd ◽  
Shawn W. Laffan ◽  
Wulf Amelung ◽  
Pablo L. Peri ◽  
Lucas C. R. Silva ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon Concentration ◽  
Temperate Forest ◽  
Gis Data
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