|本期目录/Table of Contents|

[1]蒲 悦 毛绘友 刘 群 庄丽燕 杨开军 徐振锋**.四川盆地西缘峨眉含笑-喜树混交林凋落物量及碳氮磷动态特征*[J].应用与环境生物学报,2019,25(01):1-10.[doi:10.19675/j.cnki.1006-687x.2018.05050]
　PU yue,MAO Huiyou,LIU qun,et al.Dynamic characteristics of C, N and P and leaf litterfall in a Michelia wilsonii and Camptotheca acuminate mixed forest on the Western Edge of the Sichuan Basin*[J].Chinese Journal of Applied & Environmental Biology,2019,25(01):1-10.[doi:10.19675/j.cnki.1006-687x.2018.05050]
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四川盆地西缘峨眉含笑-喜树混交林凋落物量及碳氮磷动态特征*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年01期
页码:
1-10
栏目:
研究论文
出版日期:
2019-02-25

文章信息/Info

Title:
Dynamic characteristics of C, N and P and leaf litterfall in a Michelia wilsonii and Camptotheca acuminate mixed forest on the Western Edge of the Sichuan Basin*
文章编号:
201805050
作者:
蒲 悦1 毛绘友2 刘 群1 庄丽燕1 杨开军1 徐振锋1**
1四川农业大学生态林业研究所 成都 611130?
2四川省阿坝藏族羌族自治州川西林业局 理县 623102
Author(s):
PU yue1;  MAO Huiyou 2;  LIU qun1;  ZHUANG Liyan 1;  YANG Kaijun 1 & XU Zhenfeng1**
Institute of Forest and Ecology, Sichuan Agricultural University, Chengdu 611130, China?
Forestry Bureau of Western Sichuan, Aba Tibetan and Qiang Autonomous Prefecture of Sichuan , Lixian 623102 , China
关键词:
峨眉含笑; 喜树; 叶凋落物量; 碳氮磷含量; 碳氮磷归还
Keywords:
Michelia wilsonii;  Camptotheca acuminate ;  leaves litterfall;  Carbon;  nitrogen and phosphorus element content;  Carbon;  nitrogen and phosphorus element return flux
DOI:
10.19675/j.cnki.1006-687x.2018.05050
摘要:
自2016年1月开始，通过直接收集法收集凋落物，对四川盆地西缘乡土珍贵树种峨眉含笑-喜树混交林凋落物产量、碳氮磷含量及归还量月动态进行了为期1年的观测，以期为区域生态系统保护和恢复提供理论支撑。。结果显示：混交林中叶的年凋落物总量为2 853.36 kg/hm2，其中含笑1 644.82 kg/hm2，喜树1 208.54 kg/hm2。两种林木凋落叶产量季节动态明显，含笑凋落叶量最大值在出现4月（476.03 kg/hm2），最小值出现在9月（43.73 kg/hm2）；而喜树最大值和最小值分别出现在11月（534.41 kg/hm2）和6月（21.58 kg /hm2）。含笑和喜树凋落叶中碳氮磷含量在夏季相对较高。含笑凋落叶碳氮磷归还量高峰均在4月和11月；喜树凋落叶碳氮磷归还高峰均在11月。混交林凋落叶的碳氮磷年总归还量分别为1 186.11、38.78、1.76 kg/hm2。总之，林木凋落叶产量及碳氮磷归还动态主要受控于林木的生物学特性，含笑喜树混交林相对丰富氮归还量可为其森林群落健康生长提供养分基础。（图5 表1 参29）
Abstract:
TO understand the leaf litterfall production patterns of native tree species and the dynamic characteristics of carbon (C) , nitrogen (N) and phosphorus (P) , it is expected to provide data support for regional ecosystem protection and restoration. Fresh leaf litter of Michelia wilsonii and Camptotheca acuminata mixed forest was collected by litter traps every month in 2016. The concentrations of C, N and P in fresh litter were determined and their return flux es were calculated accordingly . The annual litterfall was 2 853.4 kg /hm 2 in this mixed forest . Both M. wilsonii and C. acuminate were 1644.8 kg/hm2 and 1 208.5 kg/hm 2, respectively. There were significant seasonal changes in leaf litterfall. The maximum litterfall of M. wilsonii was in April (476.0 kg/hm 2) and the minimum was in September (43.7 kg/hm -2). Moreover, the maximum and minimum value of C. acuminate appeared in November (534.4 kg/hm 2) and June (21.6 kg /hm 2), respectively. The contents of C, N, and P in both tree species were often relatively large in summer. The two peaks of C, N and P return flux of M. wilsonii were observed in April and November. However, a maximum value of C, N, and P return flux in M. wilsonii appeared in November. The total annual C, N and P flux within fresh leaf litter of the mixed forest were 1186.1 kg/hm 2, 38.8 kg/hm 2 and 1.8 kg/hm 2, respectively. Leaf litterfall and C, N and P return fluxes of tree species are dominantly controlled its biological trait. In addition, the relatively great N of this mixed forest provides potential nutrients pools for tree growth.

相似文献/References:

[1]蒲祥,李光州,肖青,等.产喜树碱的喜树内生真菌Aspergillus sp. LY013的分离、退化及退化后的次级代谢产物[J].应用与环境生物学报,2013,19(05):787.[doi:10.3724/SP.J.1145.2013.00787]
　PU Xiang,LI Guangzhou,XIAO Qing,et al.Isolation, Attenuation, and Secondary Metabolites of Attenuated Camptothecin-Producing Endophytic Fungus Aspergillus sp. LY013 from Camptotheca acuminata[J].Chinese Journal of Applied & Environmental Biology,2013,19(01):787.[doi:10.3724/SP.J.1145.2013.00787]

备注/Memo

备注/Memo:
收稿日期: 2018-05-30 接受日期 Accepted: 2018-07-04
*国家自然科学基金（31570601）、国家重点研发计划（2016YFC0502505和2017YFC0505003）、四川省教育厅重点基金（17ZA0321）和中国博士后科学基金项目（2014T70880）资助?
**通讯作者（E-mail: xuzf@sicau.edu.cn）
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更新日期/Last Update: 2018-08-02