|本期目录/Table of Contents|

[1]薛世玉 李小飞 郭俊誉 徐大平 崔之益 杨曾奖**.不同管理措施下檀香-降香黄檀混交林凋落物特征[J].应用与环境生物学报,2021,27(02):1-13.[doi:10.19675/j.cnki.1006-687x.2020.04012]
 XUE Shiyu,LI Xiaofei,GUO Junyu,et al.Litterfall and its nutrient content in Santalum album-Dalbergia odorifera mixed plantation under different management regimes[J].Chinese Journal of Applied & Environmental Biology,2021,27(02):1-13.[doi:10.19675/j.cnki.1006-687x.2020.04012]
点击复制

不同管理措施下檀香-降香黄檀混交林凋落物特征()
分享到:

《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
27卷
期数:
2021年02期
页码:
1-13
栏目:
出版日期:
2021-04-25

文章信息/Info

Title:
Litterfall and its nutrient content in Santalum album-Dalbergia odorifera mixed plantation under different management regimes
作者:
薛世玉 李小飞 郭俊誉 徐大平 崔之益 杨曾奖**
中国林业科学研究院热带林业研究所 广州 510520
Author(s):
XUE Shiyu LI Xiaofei GUO Junyu XU Daping CUI Zhiyi & YANG Zengjiang **
Academy of Forestry, Guangzhou 510520, China
关键词:
檀香-降香黄檀混交林铲草施肥凋落物数量凋落物组成凋落物养分归还
Keywords:
Santalum album-Dalbergiaodorifera mixed plantation weeding fertilization litterfall amount litterfall composition litterfall nutrient return
DOI:
10.19675/j.cnki.1006-687x.2020.04012
摘要:
近年来我国南方大力发展珍贵树种人工林,檀香(Santalum album Linn.)-降香黄檀(Dalbergia odorifera T.Chen.)混交林是其中的典型代表。为评估不同管理措施下该林分养分循环特征,在广东省佛山市高明区选取8年生檀香-降香黄檀混交林,开展铲草、施肥、铲草+施肥抚育管理对其凋落物及养分归还的影响研究。结果表明:不同管理措施对年凋落物量影响差异显著(P < 0.05),施肥处理较对照年凋落物量增加26.88%,铲草+施肥和铲草处理较对照则分别减少6.57%和17.99%。凋落物各组分中,落叶所占比最大(62.23-73.55%),其次为杂物(14.75-22.05%),花果、落枝所占比重较小。各处理年凋落物量的月动态变化模式均为双峰型,峰值集中在夏秋两季出现,春冬季波动较小。年养分归还量表现为N > K > P,其中N年归还量:施肥和铲草+施肥处理较对照分别增加56.26%和14.25%,铲草较对照减少9.90%;P年归还量:施肥处理较对照增加28.34%,铲草+施肥、铲草处理较对照分别减少19.09%和28.25%;K年归还量:施肥、铲草+施肥处理较对照分别增加62.75%、3.37%,铲草处理较对照减少16.31%。综合分析不同处理对凋落物量、组成、养分归还的影响,在檀香-降香黄檀混交林中,施肥可显著增加凋落物养分归还量,铲草则显著减少凋落物养分归还量。
Abstract:
In recent years, large-scale plantations of high-value tree species have been widely cultivated and a typical mixed plantation of Santalum album-Dalbergia odorifera was successfully established in southern China. . In order to assess the effects of different management measures on the litterfall biomass and nutrient cycle of the mixed plantation, we conducted a field tending experiment with four treatments ( control, fertilization, weeding, and fertilization + weeding) in an 8-year-old mixed plantation of Santalum album-Dalbergia odorifera in Gaoming county, Guangdong province, China. Investigated the dynamic changes in the biomass and nutrient contents of litter fall over the course of the year. Significant differences (P < 0.05) of annual litterfall biomass were observed among the four treatments. Compared with the control group, the amount of annual litterfall biomass was increased by 26.88% in the fertilization treatment and was decreased by 6.57% and 17.99% in the weeding + fertilization and weeding treatments, respectively. Among all components of litter, the proportion of leaves was the largest (62.23-73.55%), followed by sundries (14.75-22.05%) with the proportion of flowers, fruits and branches being the smallest. The monthly variation in litterfall biomass showed bimodal patterns with the peaks in summer and autumn. Annual nutrient returns amount of litterfall appeared in the order of N > K > P. The N annual return amount was increased by 56.26% and 14.25% under fertilization and weeding + fertilization and was decreased by 9.90% under weeding compared with the control. Compared with the control, P annual return amount was increased by 28.34% in the fertilization treatment, whereas was decreased by 19.09% and 28.25% in the weeding + fertilization and weeding treatments, respectively. K annual return amount was increased by 62.75% and 3.37% in the fertilization and weeding + fertilization treatments respectively, whereas was decreased by 16.31% in the weeding treatment. Comprehensive analysis of the effects of different treatments on the biomass, composition and nutrient return amount of litterfall showed that in the mixed plantation of Santalum album-Dalbergia odorifera, fertilization increased whereas weeding reduced the amount of litterfall nutrient return.

备注/Memo

备注/Memo:
收稿日期 Received: 2020-04-07 接受日期 Accepted: 2020-05-21
国家重点研发计划“人工林生产力形成的结构与环境效应”项目(2016YFD0600205)资助
**通讯作者corresponding author (E-mail: yzengjiang@126.com)
点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。
引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2020-07-03