Dynamics of litter volume and nutrient return characteristics in pure forest of Cinnamomum camphora and Liriodendron chinense in the rocky desertification area of western Hunan Province
From September 2020 to August 2021,the dynamic monthly change analysis of litter amount,components(leaves,branches,reproductive organs and other)and the components of different nutrient content and nutrient of Cinnamomum camphora and Liriodendron chinense pure forest in the rocky desertification area Qingping Forestry Workstation of Yongshun County in Xiangxi Tujia and Miao Autonomous Prefecture were tested.The results showed that:C.camphora and L.chinense pure forest litter total biomass was(3.14±0.16)and(3.47±0.21)t per 1 hm2,L.chinense pure forest annual litter more than C.camplora pure forest.The monthly change of wood litter in L.chinense pure forest was obviously,and the amount of litter from October to December was significantly higher than that in other months,while the monthly change of tree litter of C.camphora pure forest showed irregular dynamic distribution,and the maximum value appeared in 3 months.The annual nutrient return of C.camphora and L.chinense pure forest litter was 1 360.50 and 1 309.78 kg·hm-2,respectively.The leaf nutrient content was C＞Ca＞N＞K＞Mg＞P,the litter nutrient content of the two species was significantly different.
万方数据
维普
