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亚热带樟树-马尾松混交林凋落物量及养分动态特征
引用本文：李忠文,闫文德,郑威,梁小翠,王光军,朱凡.亚热带樟树-马尾松混交林凋落物量及养分动态特征[J].生态学报,2013,33(24):7707-7714.
作者姓名：李忠文  闫文德  郑威  梁小翠  王光军  朱凡
作者单位：中南林业科技大学, 长沙 410004;南方林业生态应用技术国家工程实验室, 长沙 410004;城市森林生态湖南省重点实验室, 长沙 410004;湖南会同杉木林生态系统国家野外科学观测研究站, 会同 418300;中南林业科技大学, 长沙 410004;南方林业生态应用技术国家工程实验室, 长沙 410004;城市森林生态湖南省重点实验室, 长沙 410004;湖南会同杉木林生态系统国家野外科学观测研究站, 会同 418300;中南林业科技大学, 长沙 410004;南方林业生态应用技术国家工程实验室, 长沙 410004;城市森林生态湖南省重点实验室, 长沙 410004;湖南会同杉木林生态系统国家野外科学观测研究站, 会同 418300;中南林业科技大学, 长沙 410004;南方林业生态应用技术国家工程实验室, 长沙 410004;城市森林生态湖南省重点实验室, 长沙 410004;湖南会同杉木林生态系统国家野外科学观测研究站, 会同 418300;中南林业科技大学, 长沙 410004;南方林业生态应用技术国家工程实验室, 长沙 410004;城市森林生态湖南省重点实验室, 长沙 410004;湖南会同杉木林生态系统国家野外科学观测研究站, 会同 418300;中南林业科技大学, 长沙 410004;南方林业生态应用技术国家工程实验室, 长沙 410004;城市森林生态湖南省重点实验室, 长沙 410004;湖南会同杉木林生态系统国家野外科学观测研究站, 会同 418300
基金项目：国家“十二五”农村领域科技计划课题资助项目（2011BABAD38B0204）；国家林业公益性科研专项资助项目（200804030）；湖南省教育厅资助项目（12K070）；湖南省自然科学基金创新群体资助项目（湘基金委字[2013]7号）
摘    要：选取亚热带典型的针阔混交林作为研究对象，从2009年至2011年每月进行凋落物的测定。结果表明：混交林年凋落物总量为（4634.723±337.1427） kg/hm2，且凋落叶（71.78%） > 凋落枝（26.24%） > 凋落碎屑（8.46%） > 凋落果（3.23%）。凋落总量的月变化趋势明显，在11月份达到了最大值1025.6 kg/hm2，而最小值出现在2月份138.606 kg/hm2。混交林凋落物中大量元素、微量元素含量差异显著。大量元素含量大小顺序：C > N > Ca > K > S > Mg > P，微量元素的含量大小顺序：Mn > Fe > Zn > Pb > Cd > Cu > Ni > Co。C/N的特征是：枝（66.96） > 果（63.48） > 叶（40.62）。森林凋落物养分的含量直接决定了其养分的归还量。樟树-马尾松混交林凋落物养分归还总量为80.936 kg/hm2。混交林凋落物各元素养分归还量大小顺序特征是：N > Ca > K > S > Mg > P > Mn > Fe > Zn > Pb > Cd > Cu > Ni > Co。各组分养分归还特征是：叶（67.469 kg/hm2） > 枝（14.928 kg/hm2） > 果（2.361 kg/hm2）。混交林中N的年归还量为40.964 kg/hm2，其中凋落叶的N归还量较大为34.877 kg/hm2。
关 键 词：混交林  凋落物  养分  亚热带  樟树  马尾松
收稿时间：2012/9/20 0:00:00
修稿时间：2013/11/28 0:00:00

Litter fall production and nutrient dynamic of Cinnamomum camphora and Pinus massoniana mixed forests in subtropics China
LI Zhongwen,YAN Wende,ZHENG Wei,LIANG Xiaocui,WANG Guangjun and ZHU Fan.Litter fall production and nutrient dynamic of Cinnamomum camphora and Pinus massoniana mixed forests in subtropics China[J].Acta Ecologica Sinica,2013,33(24):7707-7714.
Authors:LI Zhongwen  YAN Wende  ZHENG Wei  LIANG Xiaocui  WANG Guangjun and ZHU Fan
Institution:Central South University of Forestry and Technology, Changsha 410004, China;South Forestry Ecological Application Technology National Engineering Laboratory, Changsha 410004, China;City of Hunan Province Key Laboratory of Forest Ecology, Changsha 410004, China;Ecological System of Chinese Fir Plantation in Hunan Province National Field Observation and Research Station, Huitong 418300, China;Central South University of Forestry and Technology, Changsha 410004, China;South Forestry Ecological Application Technology National Engineering Laboratory, Changsha 410004, China;City of Hunan Province Key Laboratory of Forest Ecology, Changsha 410004, China;Ecological System of Chinese Fir Plantation in Hunan Province National Field Observation and Research Station, Huitong 418300, China;Central South University of Forestry and Technology, Changsha 410004, China;South Forestry Ecological Application Technology National Engineering Laboratory, Changsha 410004, China;City of Hunan Province Key Laboratory of Forest Ecology, Changsha 410004, China;Ecological System of Chinese Fir Plantation in Hunan Province National Field Observation and Research Station, Huitong 418300, China;Central South University of Forestry and Technology, Changsha 410004, China;South Forestry Ecological Application Technology National Engineering Laboratory, Changsha 410004, China;City of Hunan Province Key Laboratory of Forest Ecology, Changsha 410004, China;Ecological System of Chinese Fir Plantation in Hunan Province National Field Observation and Research Station, Huitong 418300, China;Central South University of Forestry and Technology, Changsha 410004, China;South Forestry Ecological Application Technology National Engineering Laboratory, Changsha 410004, China;City of Hunan Province Key Laboratory of Forest Ecology, Changsha 410004, China;Ecological System of Chinese Fir Plantation in Hunan Province National Field Observation and Research Station, Huitong 418300, China;Central South University of Forestry and Technology, Changsha 410004, China;South Forestry Ecological Application Technology National Engineering Laboratory, Changsha 410004, China;City of Hunan Province Key Laboratory of Forest Ecology, Changsha 410004, China;Ecological System of Chinese Fir Plantation in Hunan Province National Field Observation and Research Station, Huitong 418300, China
Abstract:This study selected typical needle and broadleaved subtropical forests (camphor and pinus massoniana mixed forests) as the research object; from 2009 to 2011 the litter fall was investigated monthly. The results showed that the annual litterfall production was (4634.723±337.1427) kg/hm2,and foliage accounted for 71.78% > branches (26.24%) > litter debris(8.46%) > fruits(3.23%). The total amount of litterfall had the obvious monthly dynamic. In November, its maximum was 1025.6 kg/hm2; the minimum appears in February which was 138.606 kg/hm2. There were significant differences of macroelemens and microelements in mixed forest. The order of the macroelemens was C > N > Ca > K > S > Mg > P, as the microelement was Mn > Fe > Zn > Pb > Cd > Cu > Ni > Co. The features of C/N was: the branch (66.96%) > fruit (63.48%) > leaf (40.62%). The content of litter nutrient directly determines the amount of nutrients return in forest. The amount of litter nutrients return was 80.936 kg/hm2 in Camphor and pinus massoniana mixed forest. The features of litter nutrients return of each element size sequence was: N > Ca > K > S > Mg > P > Mn > Fe > Zn > Pb > Cd > Cu > Ni > Co. The characteristics of various components of the nutrients return was: leaf (67.469 kg/hm2) > branch (14.928kg/hm2) > fruit (2.361 kg/hm2). The amount of N return in mixed forest was 40.964 kg/hm2.Among this, the return amount of N in leaf had a value of 34.877 kg/hm2.
Keywords:mixed forest  litter fall  nutrient  subtropical  camphor  pinus massoniana
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