Soil organic carbon pools and carbon management index under different land use systems in North western Himalayas

PeerJ

article

Yasir Hanif Mir¹  Mumtaz Ahmad Ganie²  Tajamul Islam Shah³  Aziz Mujtaba Aezum³  Shabir Ahmed Bangroo³  Shakeel Ahmad Mir³  Shahnawaz Rasool Dar⁴  Syed Sheeraz Mahdi⁵  Zahoor Ahmad Baba⁶  Aanisa Manzoor Shah¹  Uzma Majeed⁷  Tatiana Minkina⁸  Vishnu D. Rajput⁸  Aijaz Ahmad Dar⁹ 

[1] Division of Soil Science and Agricultural Chemistry, Faculty of Agriculture;KVK Shopian;Division of Soil Science;Research Center for Residue & Quality Analysis, Sheri Kashmir University of Agricultural Sciences & Technologies;Division of Agronomy, Faculty of Agriculture;Division of Basic Sciences and Humanities, Faculty of Agriculture;Division of Agricultural Statistics, Faculty of Horticulture;Academy of Biology and Biotechnology, Southern Federal University;Directorate of Planning

关键词: Carbon management index;    Soil quality;    Soil organic carbon pools;    Soil depth;    Sustainability;   

DOI  :  10.7717/peerj.15266

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Current study was conducted to evaluate the effect of important land uses and soil depth on soil organic carbon pools viz. total organic carbon, Walkley and black carbon, labile organic carbon, particulate organic carbon, microbial biomass carbon and carbon management index (CMI) in the north Western Himalayas, India. Soil samples from five different land uses viz. forest, pasture, apple, saffron and paddy-oilseed were collected up to a depth of 1 m (0–30, 30–60, 60–90 cm). The results revealed that regardless of soil depth, all the carbon pools differed significantly (p < 0.05) among studied land use systems with maximum values observed under forest soils and lowest under paddy-oilseed soils. Further, upon evaluating the impact of soil depth, a significant (p < 0.05) decline and variation in all the carbon pools was observed with maximum values recorded in surface (0–30 cm) soils and least in sub-surface (60–90 cm) layers. CMI was higher in forest soils and lowest in paddy-oilseed. From regression analysis, a positive significant association (high R-squared values) between CMI and soil organic carbon pools was also observed at all three depths. Therefore, land use changes and soil depth had a significant impact on soil organic carbon pools and eventually on CMI, which is used as deterioration indicator or soil carbon rehabilitation that influences the universal goal of sustainability in the long run.

【 授权许可】

CC BY