Department of Forestry, School of Earth Sciences & Natural Resource Management, Mizoram University, Aizawl, Mizoram, India.
Department of Forestry, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, India.
PLoS One. 2019 Jul 30;14(7):e0219969. doi: 10.1371/journal.pone.0219969. eCollection 2019.
Soil organic carbon plays an important role in the stability and fertility of soil and is influenced by different management practice. We quantified active and passive carbon pools from total soil organic carbon (TOC) in seven different land use systems of northeast India. TOC was highest (2.75%) in natural forest and lowest in grassland (1.31%) and it decreased with increasing depth in different pools of lability. Very Labile Carbon (VLC) fraction ranged from 36.11 to 42.74% of TOC across different land use system. Active carbon (AC) pool was highest in Wet Rice Cultivation (61.64%) and lowest (58.71%) in natural forest. Higher AC pools (VLC and less labile) in most land use systems barring natural forests suggest that the land use systems in the region are vulnerable to land use change and must adopt suitable management practice to harness carbon sequestration.
土壤有机碳在土壤的稳定性和肥力方面起着重要作用，并受到不同管理实践的影响。我们从印度东北部的七种不同土地利用系统中量化了总土壤有机碳（TOC）中的活性和惰性碳库。在不同的易变层中，自然森林中的 TOC 最高（2.75%），而草原中最低（1.31%），并随深度增加而降低。不同土地利用系统中，非常易变碳（VLC）分数范围为 TOC 的 36.11%至 42.74%。在湿稻种植中，活性碳（AC）库最高（61.64%），而在自然森林中最低（58.71%）。除自然森林外，大多数土地利用系统中的 AC 库（VLC 和较少的易变碳）较高，表明该地区的土地利用系统容易受到土地利用变化的影响，必须采取适当的管理实践来利用碳封存。
