Analysis Of Soil Respiration And Its Influence Under Different Firewood Management Methods After Forest Fire

Forest fires can cause serious damage to forest resources.Large-scale logging after a fire has exacerbated the loss of forest resources and has also affected the release of CO₂from the soil.Therefore,the paper analyzes the soil respiration and the changing rules of various influencing factors under the management of different firewood management methods by combining fire disturbances.The experimental area is located in the Larix gmelinii forest area of Daxingan Mountains in Inner Mongolia.The firewood and forest fires in different years?2014 and 2009?were used as different firewood management methods?uncut,selective cutting,and clear cutting?as the research object and soil respiration was measured.The relationship between soil respiration rate and temperature,water content,and soil nutrient content were analyzed,and the soil respiration rate and other influencing factors under different firewood management methods were explored.Rate and soil temperature,moisture content,and soil nutrient content were analyzed.The result is as follows:?1?In 2014,the soil respiration rates under different firewood management methods showed a unimodal trend.The peak values in the growing season all appeared in August.The overall characteristics were as follows:the clear-cutting lands>the unswept lands>the cut-off lands,and the culvert lands and lands.The cutting plots were larger than the control plots,and the cutting plots were smaller than the control plots.In 2009,the soil respiration rates under different firewood management methods in burned plots all showed a unimodal trend that increased first and then decreased,and the fluctuations fluctuate greatly.In particular,the volatility of the clear cut trails was the most intense.The peaks of the growing season all appeared in July.The overall characteristics were as follows:cut-off land>unsevered land>clear-cut land.Both the cut-off land and the uncut land were larger than the control plots,and the cut-off land was smaller than the control plot.?2?In 2014,the changes of soil temperature under different firewood management methods showed a unimodal trend.The peak value of the growing season appeared in August,while the change of soil water content showed a double peak trend.The peak appeared in June and September.Appeared in July and August.In 2009,the soil temperature under different firewood management methods showed a single-bend trend,and the peak value appeared in July.The change law of soil moisture content was a single-trend trend in the control plots.The change rule of uncut forest land and the control plots On the contrary,the land of cuts and tendencies of the cuts tend to be gentle.?3?The soil respiration and soil temperature under different firewood management methods showed a significant index correlation?p<0.05?,but did not reach a significant level with the soil moisture content?p>0.05?.