C-equivalent correction factor for soil organic carbon inventory by wet oxidation, dry combustion and loss on ignition methods in Himalayan region

C-equivalent correction factor for soil organic carbon inventory by wet oxidation, dry combustion and loss on ignition methods in Himalayan region

Soil organic carbon (SOC) is an important parameter to study the carbon cycle as soil carbon stock inventory as well as to serve as prime indicator in assessing soil health and soil quality. The present study was attempted to investigate C-equivalent correction factor for SOC by Walkley–Black (wet o...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Earth System Science Vol. 128; no. 3; p. 62
Main Authors: Kumar, Suresh, Ghotekar, Yogesh Sopan, Dadhwal, Vinay K
Format: Journal Article
Language:English
Published: New Delhi Springer India 01-04-2019
Springer Nature B.V
Subjects:
Agricultural land
Carbon
Carbon cycle
Combustion
Computation
Decomposition
Earth and Environmental Science
Earth Sciences
Equivalence
Ignition
Land cover
Land use
Methods
Organic carbon
Organic matter
Organic soils
Oxidation
Potassium
Regression analysis
Regression models
Soil
Soil analysis
Soil organic matter
Soil quality
Soils
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Total organic carbon
Wet oxidation
Uttarakhand India
India
Himalayan soils
soil organic carbon (SOC)
C-equivalent correction factor
TOC analyzer
LOI methods
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Soil organic carbon (SOC) is an important parameter to study the carbon cycle as soil carbon stock inventory as well as to serve as prime indicator in assessing soil health and soil quality. The present study was attempted to investigate C-equivalent correction factor for SOC by Walkley–Black (wet oxidation) and loss on ignition (LOI) methods in relation to TOC analyzer (dry combustion) method. TOC analyzer method supposed to be the best method of total soil organic carbon estimation. Soil sample from 77 sites representing dominant land use/land cover types of crop land, forest and scrub cover were collected in Himalayan region of Uttarakhand state, India. Surface (0–15 cm) and sub-surface (15–30 cm) soil samples were used for estimation of SOC by these three methods. C-equivalent correction factor ranged from 1.10 to 1.17 for SOC determination by Walkley and Black method to TOC analyzer method, whereas it varied from 0.257 to 0.417 for soil organic matter (SOM) by LOI method to TOC analyzer for soils under various land use/land cover types in the Himalayan region. The recovery of SOC by Walkley–Black method varied from 86.84 to 91.04% in the soils of various land use/land cover in the Himalayan landscape. Thus, there is need to develop specific correction factor for soils under various land use/land cover types for improved estimation of soil carbon stock. The regression models developed in the study can be directly used to obtain TOC analyzer equivalent total carbon contents in the soils (surface and sub-surface) for computation of soil carbon stock in Himalayan region.
ISSN:2347-4327
0253-4126
0973-774X
DOI:10.1007/s12040-019-1086-9