摘要
2020年9月至2021年8月,对湘西自治州永顺县青坪林业工作站石漠化地区樟树与马褂木纯林凋落物总量、组成成分量(落叶、落枝、果实和残渣)、凋落物量和各组分不同养分含量的月动态变化及养分归还量进行分析,结果表明:樟树和马褂木凋落物总生物量分别为(3.14±0.16)和(3.47±0.21)t·hm^(-2),马褂木纯林年凋落物量大于樟树林。马褂木纯林凋落物量月变化规律明显,10—12月凋落物量明显高于其他月份;而樟树纯林凋落物量月变化呈不规则动态分布,峰值出现在3个月份。樟树与马褂木纯林凋落物年养分归还量分别为1360.50、1309.78 kg·hm^(-2),叶养分含量均为C>Ca>N>K>Mg>P,两个树种纯林凋落物养分含量存在显著差异。
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 hm 2,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 1360.50 and 1309.78 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.
作者
江岱
朱宁华
JIANG Dai;ZHU Ninghua(Central South University of Forestry and Technology,Changsha 410004,Hunan,China)
出处
《湖南林业科技》
2024年第6期76-86,共11页
Hunan Forestry Science & Technology
基金
湖南省级财政林业科技攻关与创新项目(XLKY2023-30)
中央级科研院所基本科研业务费重点项目(CAFYBB2019SZ003)。
关键词
石漠化
凋落物
养分含量
养分归还
樟树
马褂木
rocky desertification
litter
nutrient content
nutrient return
Cinnamomum camphora
Liriodendron chinense
作者简介
第一作者:江岱(1998-),硕士研究生,主要从事森林培育与林木育种研究,E-mail:2823257042@qq.com;通信作者:朱宁华,教授,E-mail:zhuninghua@yahoo.com。
