Effects of Close-to-Nature Management on Carbon Storage of Pi-nus massoniana Plantation Ecosystem
The study on the effects of close-to-nature management on carbon storage of Pinus massoniana plantation ecosystem can provide practical and scientific bases for carbon sequestration and sustainable man-agement of P.massoniana plantation.This study took P.massoniana plantation in Longgang Town,Kaiyang County,Guiyang City,Guizhou Province,as the research object.The paired t-test was conducted to compare the carbon storage of the vegetation layer,litter layer and soil layer in the control stand and the close-to-na-ture management(hereinafter referred to as"management")stand of P.massoniana plantation at different development stages after nearly 10 years of close-to-nature management.The results showed that:①Close-to-nature management changed the proportion of carbon storage at different layers of the plantation ecosystem,while the overall distribution of carbon storage in the ecosystem still followed the pattern of soil layer＞tree layer＞litter layer＞shrub layer＞herb layer.②The carbon storage of P.massoniana plantation at different stand development stages was significantly higher in the management stand than in the control stand,indica-ting that the carbon storage of the ecosystem can be effectively improved in a relatively long period after the close-to-nature management.③ The carbon storage in the vegetation layer was significantly higher in the management stand than in the control stand in the middle-age stage.The carbon storage in the litter layer showed no significant difference between control and management stands at the three development stages.The carbon storage in the soil layer was significantly higher in the management stand than in the control stand in the near mature stage.In conclusion,close-to-nature management has the effect of improving the car-bon sequestration of P.massoniana plantation ecosystem.Subsequently,local broad-leaved tree species such as Liquidambar formosana,Quercus fabri and Q.acutissima can be replanted to enhance species diversity and promote stand growth and carbon accumulation in the P.massoniana ecosystem.This study provides scientif-ic reference for the management of P.massoniana plantation and other plantations.
close-to-nature managementPinus massoniana plantationstage of stand developmentcarbon storage of ecosystem
万方数据
维普
