Soil carbon dioxide emission is a major component of ecosystem respiration, responsible for organic carbon losses from the ecosystem. In Pinus roxburghii Sarg. plantations, higher CO₂ emission coincided with maximum soil moisture and soil temperature during the rainy season (4.23 µmol CO₂m^-2 s^-1) followed by summer season (1.69 µmol CO₂m^-2 s^-1) and winter season (1.35 µmol CO₂m^-2 s^-1). The soil CO₂ emission rates recorded during the rainy season differed significantly from other seasons (p < 0.05). Multiple linear regression revealed that rainfall was the main dominant factor affecting the soil CO₂ emission. A significant positive correlation with minimum air temperature and average air temperature during the lag period, i.e., preceding 15 days of data, was recorded. A significant positive correlation was also observed between annual soil CO₂ emission rates with soil temperature, soil moisture, air temperature, and rainfall (p < 0.05). Vapor pressure and relative humidity at 14.19 h also emerged as additional scientific variables affecting soil CO₂ emission with significant positive correlations. Annual soil CO₂ emission rates and soil properties were not significantly correlated but were positively correlated with organic carbon, exchangeable potassium and negatively correlated with available nitrogen and phosphorous (p > 0.05). Higher annual average carbon stock, 95.05 t ha^-1 in P. roxburghii plantations than the yearly soil CO₂ emission, 33.23 t ha^-1 indicates that plantations sequester more carbon than the emissions.

土壤二氧化碳排放是生态系统呼吸的主要组成部分，是生态系统有机碳流失的主要原因。在Pinus roxburghii Sarg 中。在人工林中，较高的 CO ₂排放与雨季（4.23 µmol CO ₂ m ^-2  s ^-1）其次是夏季（1.69 µmol CO ₂ m ^-2  s ^-1）和冬季（ 1.35 µmol CO ₂ m ^-2  s ^-1 )。雨季记录的土壤CO ₂排放率与其他季节显着不同（p < 0.05)。多元线性回归表明降雨是影响土壤CO ₂排放的主要主导因素。记录了滞后期（即数据的前 15 天）与最低气温和平均气温的显着正相关。土壤CO _{2 年}排放率与土壤温度、土壤湿度、气温和降雨量之间也存在显着的正相关（p  < 0.05）。14.19 小时的蒸气压和相对湿度也作为影响土壤 CO ₂排放的附加科学变量出现，具有显着的正相关性。年土壤 CO ₂排放率与土壤性质无显着相关，但与有机碳、交换性钾呈正相关，与有效氮、磷呈负相关（p  > 0.05）。更高的年平均碳股票，95.05吨公顷^-1在P.莲种植园比每年土壤CO ₂排放，33.23吨公顷^-1表示种植园封存比排放更多的碳。