Variation of Soil Organic Carbon Stock under Land Use and Land Cover Changes in Farming-Pastoral Ecotone over the Past Century in Zhenlai, China

2012 ◽  
Author(s):  
Jie Tang ◽  
Nan Zhang ◽  
Zhaoyang Li ◽  
Bo Yang
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Land Cover ◽  
Carbon Stock ◽  
Land Cover Changes ◽  
Past Century ◽  
Soil Organic Carbon Stock ◽  
The Past ◽  
Organic Carbon Stock

scholarly journals Land Use/Land Cover (LU/LC) Changes and its impact on Soil Organic Carbon Stock in Killiar River Basin, Kerala, India: A Geospatial Approach

2021 ◽  
Vol 16 (3) ◽  
pp. 662-664
Author(s):  
Sabu Joseph ◽  
Rahul R ◽  
Sukanya S
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Land Cover ◽  
River Basin ◽  
Carbon Stock ◽  
Landsat 8 ◽  
Soil Organic Carbon Stock ◽  
The Impact ◽  
Organic Carbon Stock

The changes in the pattern of land use and land cover (LU/LC) have remarkable consequences on ecosystem functioning and natural resources dynamics. The present study analyzes the spatial pattern of LU/LC change detection along the Killiar River Basin (KRB), a major tributary of Karamana river in Thiruvananthapuram district, Kerala (India), over a period of 64 years (1957-2021) through Remote Sensing and GIS approach. The rationale of the study is to identify and classify LU/LC changes in KRB using the Survey of India (SOI) toposheet (1:50,000) of 1957, LISS-III imagery of 2005, Landsat 8 OLI & TIRS imagery of 2021 and further to scrutinize the impact of LU/LC conversion on Soil Organic Carbon stock in the study area. Five major LU/LC classes, viz., agriculture land, built-up, forest, wasteland and water bodies were characterized from available data. Within the study period, built-up area and wastelands showed a substantial increase of 51.51% and 15.67% respectively. Thus, the general trend followed is the increase in built-up and wastelands area which results in the decrease of all other LU/LC classes. Based on IPCC guidelines, total soil organic carbon (SOC) stock of different land-use types was estimated and was 1292.72 Mt C in 1957, 562.65 Mt C in 2005 and it reduced to 152.86 Mt C in 2021. This decrease is mainly due to various anthropogenic activities, mainly built-up activities. This conversion for built-up is at par with the rising population, and over-exploitation of natural and agricultural resources is increasing every year.

Land Use Effects on Sample Size Requirements for Soil Organic Carbon Stock Estimations

Soil Science ◽  
2011 ◽  
Vol 176 (2) ◽  
pp. 110-114 ◽  
Author(s):  
Sriroop Chaudhuri ◽  
Eugenia M. Pena-Yewtukhiw ◽  
Louis M. McDonald ◽  
Jeffrey Skousen ◽  
Mark Sperow
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Sample Size ◽  
Carbon Stock ◽  
Soil Organic Carbon Stock ◽  
Land Use Effects ◽  
Organic Carbon Stock

Soil organic carbon stock as affected by land use/cover changes in the humid region of northern Iran

2014 ◽  
Vol 11 (2) ◽  
pp. 507-518 ◽  
Author(s):  
Samereh Falahatkar ◽  
Seyed Mohsen Hosseini ◽  
Abdolrassoul Salman Mahiny ◽  
Shamsollah Ayoubi ◽  
Shao-qiang Wang
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Stock ◽  
Northern Iran ◽  
Soil Organic Carbon Stock ◽  
Humid Region ◽  
Organic Carbon Stock

scholarly journals Aggregate characteristics and aggregate-associated soil organic carbon and carbohydrates of soils under contrasting tree land use

2021 ◽  
Vol 18 (2) ◽  
pp. 126
Author(s):  
Bassey Udom ◽  
Joshua Ogunwole ◽  
Chima Wokocha
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Oil Palm ◽  
Carbon Stock ◽  
Aggregate Size ◽  
Soil Organic Carbon Stock ◽  
Size Fractions ◽  
Land Use Types ◽  
Organic Carbon Stock

<p><span>Protection of soil organic carbon and acid-hydrolyzable carbohydrates in aggregate-size fractions is important for appraising soil degradation and aggregation under land use types. Aggregate-associated soil organic carbon (SOC) and acid-hydrolyzable carbohydrates (R-CHO) in bulk soils and aggregate-size fractions of a sandy loam soil under Alchornea bush, Rubber, Oil palm and Teak plantations in southern Nigeria were studied. Results revealed significant differences in aggregate-associated SOC and R-CHO, bulk densities, total porosity, soil organic carbon stock and aggregate stability among the land use types. Greater SOC was stored in macro-aggregates &gt;0.25 mm, while greater R-CHO was occluded in micro-aggregates &lt;0.25 mm (p&lt;0.05). The highest mean weight diameter (MWD) was 1.01 mm in Alchornea soils and 0.92 mm in Oil palm plantation at 0-15 cm topsoil. Soil organic carbon stock in 0-15 cm topsoil was 77.7, 81.8, 92.2, and 67.5 kg C ha<sup>-1</sup> in Alchornea, Rubber, Oil palm, and Teak soils, respectively. Relationships showed a positive linear correlations between MWD and SOC (r = 0.793, p &lt; 0.05) and R-CHO (r = 0.789. p &lt; 0.05). Alchornea bush and Oil palm plantation increased macro-aggregate formation and macro-pores &gt;5 µm, therefore they have greater potentials to boost protection of SOC in soil macro-aggregates.</span></p>

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