5. CONCLUSION
We conclude that it may be valuable to pay attention to LUCCs as a strategy to relieve climate pressure in some cases, but its impact shows great variation (i.e., showing positive and negative SOC / TN gains). Besides the LUCCs (reforestation and land restoration), the future research should include more extensive depth sampling and appropriate accounting methods. In addition, the results of meta-analysis indicate that there is a high degree of variation in SOC / TN storage, and it may be unwise to estimate the benefits / losses of SOC / TN storage from a specific soil depth. To quantify the storage of SOC and TN in response to LUCCs, the increased depths of the soil profile Finally, we suggest that environmental factors (i.e., geography, climate, soil properties and time factors) should be considered as potential predictors to assess of SOC accumulation under the concession station and land restoration in Karst A comprehensive and accurate understanding of SOC / TN storage response to LUCCs is a strong support for climate change mitigation and food security strategies.