2.1. Study selections
The papers were searched using specific keywords from the database of
different journals and the online websites. The resulted papers were
separated based on requirements keeping several criteria in mind: 1).
The collected papers should have comparative study between minimum any
two land uses (barren land (BL); cultivated land (CL); grassland (GL);
horticulture land (HL); plantation land (PL) and forest land (FL) in
Indian context,2). The collected papers should have suitable sets of
soil parameters (soil pH, bulk density (BD), cation exchange capacity
(CEC), soil organic carbon (SOC) and soil carbon stock (SCS), 3). Forest
land (FL) was considered as control treatment over the other land uses
(BL/CL/GL/HL/PL). 4). The study paper should represent different regions
of India, and 5). The study was not bounded with the particular
parameters like soil types, soil classes, soil taxonomy, and management
practices, cropping systems, and specific trees, grasses, crops.
For comparing SOC and crop yield to show the impact of proper management
practice on to bring back the conditions of soil for restoring soil
health and ensuring food security, data from supplementary file of
database from Sharma et al. (2019) was used that involve compared data
of integrated nutrient management (INM) and inorganic alone for rice and
wheat crop.