毛竹林带采伐宽度对土壤碳氮磷含量及计量比的影响

In order to scientifically manage the strip clear cutting of moso bamboo forests,we studied the effects of different cutting widths(3 m,6 m,9 m,12 m)on the soil characteristics of moso bamboo forests after strip clear cutting.The results showed that with the increase of cutting width,the content of soil C,N and P increased at first and then decreased.The content of soil C,N and P was the highest at 6 m and the lowest at 12 m;Soil C/P and N/P increased first and then decreased with the increase of cutting width,and C/N was relatively stable,among which the cutting width of 6 m soil C/P was significantly greater than the cutting width of 12 m,and the cutting width of 3 m and 6 m soil N/P was significantly greater than the cutting width of 12 m.The variation range of C/N,C/P and N/P in the study area was 14.52-16.50,159.88-172.54 and 9.03-10.70.In conclusion,when the cutting width was 6 m,it was most beneficial to the accumulation of soil C and N,with higher C/N,C/P,N/P,and more balanced nutrient ratio;At the same time,moso bamboo forest in the experimental area was influenced by the dual constraints of nitrogen and phosphorus content,and the soil P element was more deficient.It is necessary to ensure the soil nutrient balance through artificial application of phosphorus fertilizer,and promote the rapid recovery of moso bamboo forest in strip cutting area in the short term.