Regional pattern of soil organic carbon density and its influence upon the plough layers of cropland

2020 ◽  
Vol 31 (16) ◽  
pp. 2461-2474
Author(s):  
Liangxia Duan ◽  
Zhenwei Li ◽  
Hongxia Xie ◽  
Hong Yuan ◽  
Zhiming Li ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Density ◽  
Regional Pattern ◽  
Soil Organic Carbon Density

scholarly journals Soil organic carbon storage in moutain grasslands of the Lake Plateau at Mt. Durmitor in Montenegro

2012 ◽  
pp. 113-128 ◽  
Author(s):  
Ratko Kadovic ◽  
Snezana Belanovic ◽  
Dragica Obratov-Petkovic ◽  
Ivana Bjedov ◽  
Veljko Perovic ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Average Density ◽  
Mean Annual Temperature ◽  
Carbon Density ◽  
Mountain Areas ◽  
Organic C ◽  
C Storage ◽  
Soil Variables ◽  
Soil Organic Carbon Density

Soil organic C storage in mountain areas is highly heterogeneous, mainly as a result of local-scale variability in the soil environment and microclimate. The aims of the present study were to estimate soil organic carbon density (SOCD) and stocks in leptosol on morainic deposits of high-altitude grasslands of the Lake Plateau of Mt. Durmitor National Park in Montenegro, and determine the soil variables that can be used as factors to determine the SOCD at 28 soil profiles. Our results indicated that SOC storage in the top 40 cm of the alpine grasslands were estimated at 560 414.86 t C, or 152.66 t?ha-1, with an average density of 15.27 kg?m-2. The soil organic carbon density increased significantly with soil moisture, clay and silt content, but only moderately with mean annual temperature. In conjunction, these variables could explain approximately 51% of the total variation in SOC density.

Spatial Distribution and Reserves Estimation of Soil Organic Carbon Based on GIS in Maiji Area of Tianshui

2013 ◽  
Vol 316-317 ◽  
pp. 299-306
Author(s):  
Ai Hong Gai ◽  
Ren Zhi Zhang ◽  
Fang Chen ◽  
Xiao Long Wang
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Average Density ◽  
Soil Survey ◽  
Soil Conditions ◽  
Carbon Density ◽  
Deep Soil ◽  
Soil Organic Carbon Density ◽  
Secondary Survey ◽  
Organic Carbon Storage

The soil organic carbon density and storage of Maiji Area of Tianshui was estmiated, using the data of 6060 soil profile from the second soil survey of China and formulating fertilization for soil conditions in 2008. Integrating the soil map, land use status map and district map of Maiji Area of Tianshui, the index of the characteristic of soil organic distribution in different soil and soil layers were analyzed. Results showed: the soil of Maiji area have low average density, when soil secondary census, depths of 5cm,20cm,1m average density of organic carbon are 0.92kg•m-2,3.31kg•m-2,7.79kg•m-2 respectively, average density of organic carbon at depth of 20cm is 2.43 kg•m-2 in 2008 years, As a standard of Yu Dongsheng’s (2005) estimation of average density of 9.60 kg•m-2 in the depth of 1m all over the China, Maiji area 1m deep soil organic carbon density is lower 1.91kg•m-2 than the average density of whole country; The calculation of the secondary survey, reserves of organic carbon in surface soil (0-5cm) is about 4.83×106t, reserves of organic carbon in fall (0-20cm) is about 12.46×106t, reserves of soil organic carbon in 1m depth is about 45.17×106t, reserves of soil organic carbon in fall (0-20cm) is about 18.55×106t in 2008 years. In a word, the soil organic carbon storage was relatively indigent in Maiji Area of Tianshui.

scholarly journals Simulated Soil Organic Carbon Density Changes from 1980 to 2016 in Shandong Province Dry Farmlands Using the CENTURY Model

2020 ◽  
Vol 12 (13) ◽  
pp. 5384
Author(s):  
Min Tang ◽  
Shihang Wang ◽  
Mingsong Zhao ◽  
Falyu Qin ◽  
Xiaoyu Liu
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Atmospheric Carbon Dioxide ◽  
Soil Layer ◽  
Co2 Concentration ◽  
Shandong Province ◽  
Initial Increase ◽  
Century Model ◽  
Carbon Density ◽  
Soil Organic Carbon Density

The changes in cultivated soil organic carbon (SOC) have significant effects on soil fertility and atmospheric carbon dioxide (CO2) concentration. Shandong Province is an important agricultural and grain production area in China. Dry farmland accounts for 74.15% of the province’s area, so studies on dynamic SOC changes would be helpful to understand its contribution to the Chinese national carbon (C) inventory. Using the spatial overlay analysis of the soil layer (1:10,000,000) and the land use layer (1:10,000,000), 2329 dry farmland soil polygons were obtained to drive the CENTURY model to simulate SOC dynamics in Shandong Province from the period 1980 to 2016. The results showed that the CENTURY model can be used to simulate the dry farmland SOC in Shandong Province. From the period 1980 to 2016, the soil organic carbon storage (SOCS) and soil organic carbon density (SOCD) showed an initial increase and then decreased, especially after reaching a maximum in 2009. In 2016, the SOCS was 290.58 × 106 t, an increase of 26.99 × 106 t compared with 1980. SOCD in the dry farmland increased from 23.69 t C ha−1 in 1980 to 25.94 t C ha−1 in 2016. The dry farmland of Shandong Province was a C sink from 1980 to 2016. Among the four soil orders, inceptisols SOCD dominated, and accounted for 47.81% of the dry farmland, followed by >entisols > vertisols > alfisols. Entisols SOCD growth rate was the highest (0.23 t C ha−1year−1). Compared to 1980, SOCD in 2016 showed an increasing trend in the northeast, northwest and southeast regions, while it followed a downward trend in the southwest.

The three-dimension zonal pattern of soil organic carbon density in China’s forests

CATENA ◽  
2021 ◽  
Vol 196 ◽  
pp. 104950
Author(s):  
Ji Yuan ◽  
Yu Zhang ◽  
Chengming You ◽  
Rui Cao ◽  
Bo Tan ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Three Dimension ◽  
Carbon Density ◽  
Soil Organic Carbon Density

Predicting soil organic carbon density using auxiliary environmental variables in northern Iran

2015 ◽  
Vol 62 (3) ◽  
pp. 375-393 ◽  
Author(s):  
Samereh Falahatkar ◽  
Seyed Mohsen Hosseini ◽  
Shamsollah Ayoubi ◽  
Abdolrassoul Salmanmahiny
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Environmental Variables ◽  
Carbon Density ◽  
Northern Iran ◽  
Soil Organic Carbon Density

Soil organic carbon density and stock at the catchment scale of a hilly region of the loess plateau

2015 ◽  
Vol 35 (9) ◽  
Author(s):  
薛志婧 XUE Zhijing ◽  
马露莎 MA Lusha ◽  
安韶山 AN Shaoshan ◽  
王万忠 WANG Wanzhong
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Loess Plateau ◽  
Carbon Density ◽  
The Loess Plateau ◽  
Catchment Scale ◽  
Hilly Region ◽  
Soil Organic Carbon Density
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