The Effect of Low Efficiency Forest Transformation of Pinus Tabulaeformis on Soil Nutrient Status
In order to study the impact of the transformation of low efficiency Chinese pine forests on soil nutrient conditions,taking a near mature low efficiency Chinese pine forest in a certain forest farm in Datong City as an example,three treatment points were set up to study and compare the nutrient conditions of the soil within a range of 0-20 cm after the transformation of low efficiency forests.The research results show that after comparing the pH and total phosphorus content of 0-20 cm soil in each treatment area,it can be seen that there is no significant change in the above components(P>0.05);The total nitrogen,hydrolyzed nitrogen,and total phosphorus in the soil of T1 group(thinning)were significantly higher than those of T2 group(understory clearing)and control group(P<0.05);The content of total potassium,available potassium,and organic matter in the T2 group soil was significantly higher than that in the T1 group and control group(P<0.05).During the transformation of inefficient Pinus tabulaeformis forests,thinning can effectively in-crease the content of nitrogen and phosphorus in the soil,while clearing the understory is beneficial for reducing the content of organic matter and potassium.Therefore,in order to better improve the nutrient status of soil in low efficiency forests of Pinus tabulaeformis,the two methods of thinning and clearing under the forest can be combined.
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