Effect of fire intensity on active organic and total soil carbon in a Larix gmelinii forest in the Daxing’anling Mountains, Northeastern China

2016 ◽  
Vol 27 (6) ◽  
pp. 1351-1359
Author(s):  
Yunmin Wei ◽  
Haiqing Hu ◽  
Jiabao Sun ◽  
Qiang Yuan ◽  
Long Sun ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Northeastern China ◽  
Larix Gmelinii ◽  
Fire Intensity ◽  
Total Soil

Topography Influences Management System Effects on Total Soil Carbon and Nitrogen

2009 ◽  
Vol 73 (6) ◽  
pp. 2059-2067 ◽  
Author(s):  
S. Senthilkumar ◽  
A. N. Kravchenko ◽  
G. P. Robertson
Keyword(s):  
Soil Carbon ◽  
Management System ◽  
Carbon And Nitrogen ◽  
Soil Carbon And Nitrogen ◽  
Total Soil

Using Information about Spatial Variability to Improve Estimates of Total Soil Carbon

2006 ◽  
Vol 98 (3) ◽  
pp. 823-829 ◽  
Author(s):  
A. N. Kravchenko ◽  
G. P. Robertson ◽  
S. S. Snap ◽  
A. J. M. Smucker
Keyword(s):  
Spatial Variability ◽  
Soil Carbon ◽  
Total Soil

Leys and soil organic matter:III. The accumulation of macro-organic matter in the soil under different swards

1972 ◽  
Vol 78 (2) ◽  
pp. 333-341 ◽  
Author(s):  
E. A. Garwood ◽  
C. R. Clement ◽  
T. E. Williams
Keyword(s):  
Organic Matter ◽  
Soil Carbon ◽  
Perennial Ryegrass ◽  
White Clover ◽  
Arable Land ◽  
N Fertilizer ◽  
Plant Debris ◽  
Total Soil ◽  
Grazed Swards ◽  
Mesh Sieve

SUMMARYMacro-organic matter (roots and partially decomposed plant debris retained on a 0·25 mm mesh sieve) was measured in soils under various swards. Under a grazed perennial ryegrass/white clover sward, sown on arable land, macro-organic matter in the top 15 cm of soil rose steadily in the first 8 years to 15·8 t/ha, but subsequently declined. Under arable cropping there was great variation with crop and season. Under grass, most of the macro-organic matter accumulated in the top 2 cm of soil, particularly during the first 3 or 4 years. More macro-organic matter was found under perennial ryegrass/white clover than under cocksfoot/white clover swards.After 3 years under grass macro-organic matter accounted for 10% of the total soil carbon, and represented about half the increase in soil carbon.Half, or less, of the nitrogen which accumulated in soil under grass was in the macroorganic matter fraction. The differences between swards which received no N fertilizer and those which received 940 kg/ha over 3 years was small, 16–40 kg N/ha respectively for cut and frequently grazed swards. The ratio of C:N in macro-organic matter under different swards averaged 22:1.

scholarly journals Plant Debris and Its Contribution to Ecosystem Carbon Storage in Successional Larix gmelinii Forests in Northeastern China

Forests ◽  
2017 ◽  
Vol 8 (6) ◽  
pp. 191 ◽  
Author(s):  
Jianxiao Zhu ◽  
Xuli Zhou ◽  
Wenjing Fang ◽  
Xinyu Xiong ◽  
Biao Zhu ◽  
...  
Keyword(s):  
Carbon Storage ◽  
Northeastern China ◽  
Larix Gmelinii ◽  
Plant Debris ◽  
Ecosystem Carbon

scholarly journals Radial Growth Response of Larix gmelinii to Climate along a Latitudinal Gradient in the Greater Khingan Mountains, Northeastern China

Forests ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 295 ◽  
Author(s):  
Yangao Jiang ◽  
Junhui Zhang ◽  
Shijie Han ◽  
Zhenju Chen ◽  
Heikki Setälä ◽  
...  
Keyword(s):  
Radial Growth ◽  
Growth Response ◽  
Latitudinal Gradient ◽  
Northeastern China ◽  
Larix Gmelinii

Carbon storage in cotton soils of northern New South Wales

Soil Research ◽  
2003 ◽  
Vol 41 (5) ◽  
pp. 889 ◽  
Author(s):  
T. A. Knowles ◽  
B. Singh
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Content ◽  
Soil Carbon ◽  
Inorganic Carbon ◽  
Carbon Pool ◽  
Total Carbon ◽  
Soil Types ◽  
Soil Carbon Pool ◽  
Total Soil

Soil carbon is an important component of the global carbon cycle with an estimated pool of soil organic carbon of about 1500 Gt. There are few estimates of the pool of inorganic carbon, but it is thought to be approximately 50% of the organic carbon pool. There is no detailed study on the estimation of the soil carbon pool for Australian soils.In order to quantify the carbon pools and to determine the extent of spatial variability in the organic and inorganic carbon pools, 120 soil cores were taken down to a depth of 0.90 m from a typical cotton field in northern NSW. Three cores were also taken from nearby virgin bushland and these samples were used as paired samples. Each soil core was separated into 4 samples, i.e. 0–0.15, 0.15–0.30, 0.30–0.60, and 0.60–0.90 m. Soil organic carbon was determined by wet oxidation and inorganic carbon content was determined using the difference between total carbon and organic carbon, and confirmed by the acid dissolution method. Total carbon was measured using a LECO CHN analyser. Soil organic carbon of the field constituted 62% (0–0.15 m), 58% (0.15–0.30 m), 60% (0.30–0.60 m), and 67% (0.60–0.90 m) of the total soil carbon. The proportion of inorganic carbon in total carbon is higher than the global average of 32%. Organic carbon content was relatively higher in the deeper layers (>0.30�m) of the studied soils (Vertosols) compared with other soil types of Australia. The carbon content varied across the field, however, there was little correlation between the soil types (grey, red, or intergrade colour) and carbon content. The total soil carbon pool of the studied field was estimated to be about 78 t/ha for 0–0.90 m layer, which was approximately 58% of the total soil carbon in the soil under nearby remnant bushland (136 t/ha). The total pool of carbon in the cotton soils of NSW was estimated to be 44.8 Mt C, where organic carbon and inorganic carbon constitute 34.9 Mt C and 9.9 Mt C, respectively. Based on the results of a limited number of paired sites under remnant vegetation, it was estimated that about 18.9 Mt of C has been lost from Vertosols by cotton cropping in NSW. With more sustainable management practices such as conservation tillage and green manuring, some of the lost carbon can be resequestered, which will help to mitigate the greenhouse effect, improve soil quality and may increase crop yield.

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