Secondary tropical forests sequester atmospheric CO₂ at relatively faster rates in vegetation and in soil than old-growth primary forests. Spatial understanding of biomass and carbon stocks in different plant functional types of these forests is important. Structure, diversity, composition, soil features and carbon stocks in six distinct plant functional types, namely: Moist Mixed-Deciduous Forest, Peninsular Sal Forest (PSF), Semi-Evergreen Forest (SEF), Planted Teak Forest, Bamboo Brakes (BB), and Degraded Thorny Shrubby Forest were quantified as secondary tropical deciduous forests of the Chandaka Wildlife Sanctuary, Eastern Ghats of Odisha, India. Seventy-one species ≥ 10 cm Girth at breast height (GBH) were recorded, belonging to 38 families and 65 genera. Above- ground biomass carbon and soil organic carbon ranged from 2.1–72.7 Mg C ha⁻¹ and 20.6–67.1 Mg C ha⁻¹, respectively, among all plant functional types. Soil organic carbon and important value index were positively correlated with above- ground biomass carbon. Maximum carbon allocation was in SOC pool (51–91%), followed by the above- ground biomass pool (9–52%), indicating SOC is one of the major carbon sinks in secondary dry forests. The results highlight the importance of secondary tropical deciduous forests in biodiversity conservation and ecological importance in reducing greenhouse gases.

次生热带森林封存大气中的CO ₂与旧有的原始森林相比，植被和土壤的生长速度相对较快。这些森林的不同植物功能类型对生物量和碳储量的空间了解很重要。六种不同植物功能类型的结构，多样性，组成，土壤特征和碳储量，分别是：湿混落叶林，半岛萨尔森林（PSF），半常绿森林（SEF），人工柚木林，竹刹车（BB）以及退化的棘手灌木林被量化为印度奥里萨邦东高止山脉Chandaka野生动物保护区的次生热带落叶林。记录到71个≥10 cm胸高（GBH）的物种，属于38个科和65属。地上生物量碳和土壤有机碳的范围为2.1-72.7 Mg C ha ^-1在所有植物功能类型中分别为20.6-67.1 Mg C ha ^-1。土壤有机碳和重要价值指数与地上生物量碳呈正相关。最大的碳分配在SOC库中（51–91％），其次是地上生物量库（9–52％），这表明SOC是次生干旱森林中的主要碳汇之一。结果强调了次生热带落叶林在生物多样性保护中的重要性以及在减少温室气体方面的生态重要性。