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[1]陈轶群 王文娟 黄荣银 罗慧莹 李应文 李泳兴 赵倩 莫其锋,**.热带次生林两种林下植物叶片生理特性对氮磷添加的响应*[J].应用与环境生物学报,2019,25(03):1-13.[doi:10.19675/j.cnki.1006-687x.2018.09027]
 CHEN Yiqun,WANG Wenjuan,HUANG Rongyin,et al.Response of foliar physiological characteristic within two understory plant species to chronic nitrogen and phosphorus addition in a secondary tropical forest*[J].Chinese Journal of Applied & Environmental Biology,2019,25(03):1-13.[doi:10.19675/j.cnki.1006-687x.2018.09027]
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热带次生林两种林下植物叶片生理特性对氮磷添加的响应*()
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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03期
页码:
1-13
栏目:
研究论文
出版日期:
2019-06-25

文章信息/Info

Title:
Response of foliar physiological characteristic within two understory plant species to chronic nitrogen and phosphorus addition in a secondary tropical forest*
文章编号:
201809027
作者:
陈轶群1 王文娟2 黄荣银1 罗慧莹1 李应文23 李泳兴23 赵倩1 莫其锋123**
1华南农业大学林学与风景园林学院 广州 510642?
2中国科学院退化生态系统植被恢复与管理重点实验室,中国科学院华南植物园 广州 510650?
3中国科学院小良热带海岸带生态系统定位研究站 茂名 525029
Author(s):
CHEN Yiqun1 WANG Wenjuan2 HUANG Rongyin1 LUO Huiying1 LI Yingwen2 3 LI Yongxing2 3 ZHAO Qian1 MO Qifeng1 2 3 *
1College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China2 Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China3 Xiaoliang Research Station for Tropical Coastal Ecosystems, Chinese Academy of Science, Maoming 525029, China
关键词:
华南热带森林氮磷含量功能属性磷限制
Keywords:
South China tropical forests N&P concentration functional traits P limitation
DOI:
10.19675/j.cnki.1006-687x.2018.09027
摘要:
为探究热带次生林林下植物叶片对长期氮磷添加的响应,阐明热带森林植物对土壤低磷环境适应的生理生态机制,本研究基于华南热带次生林长达9年的氮(N)、磷(P)添加实验,测定两种分布较广的林下乡土树种大青(Clerodendrum cyrtophyllum)和紫玉盘(Uvaria microcarpa)的叶片基本属性、叶绿素含量及氮磷元素含量等指标。结果显示:1)两种植物叶片的基本属性及光合色素存在显著的种间差异(p<0.05);氮和磷添加提高了大青叶片的比叶面积(35-38%),对两个树种叶片的叶长、叶宽、叶面积等无显著影响;2)N添加显著影响两种植物叶片叶绿素a和总叶绿素含量(p=0.036和p=0.043),而P添加对光合色素含量无显著影响;3)对照处理下,大青和紫玉盘叶片的N:P分别为28.71与21.75,大于16,表明两个树种仍受到较强的P限制;P添加显著提高了两种植物叶片的P含量,并降低N:P比;4)相关性分析表明,叶片基本属性、光合色素与氮磷元素含量三者之间的相关性关系较弱。综上,热带森林植物叶片N和P元素含量对氮磷添加的响应较敏感,叶绿素a和总叶绿素对氮添加的响应较敏感,而其它属性对氮磷添加的响应较小。因此,在热带森林土壤磷长期缺乏的情况下,植物叶片的生理功能对环境变化具有较好的适应性,其蕴含的生物学机制仍需要进一步的探讨。(图3 表2 参31)
Abstract:
This study aimed to investigate the response and adaptation of plant leaf to long-term N and P addition experiment, clarifying the physiological and ecological mechanisms of tropical forest plant to lower soil P availability in southern China. Based on nine-year nitrogen (N) and phosphorus (P) addition experiment in secondary tropical forest of southern China, the foliar traits, photosynthetic pigment, and N, P concentrations of two widely distributed tree species, Clerodendrum cyrtophyllum and Uvaria microcarpa were measured . 1) there were inter-species difference on foliar trait, photosynthetic pigment, and N and P concentrations ( p<0.05), N and P addition increased the specific leaf area (SLA) of C. cyrtophyllum (35%-38%), while had no significant effects on leaf length, width, and area of two species, 2) N addition significantly influenced the chl a and chl ( a+b) concentration (p=0.036 and p=0.043, respectively), while P addition had no significant effects on photosynthetic pigment, 3)in CK treatment, the N:P ratios of C. cyrtophyllum and U. microcarpa were 28.71 and 21.75, respectively, both of them were higher than 16, indicating that two tree species were strongly limited by P availability; P addition significantly increased foliar P concentrations, and decreased N:P ratios of two species, 4) there were relatively weak correlations among foliar trait, photosynthetic pigment, and N and P concentrations. Thus, the foliar N and P concentrations were sensitive to N and P addition, and chl a and chl ( a+b) were also sensitive to N addition, while other foliar trait was slowly responsive to N and P addition in this tropical forest. With the long-term lower soil availability, tropical forest plant leaves are well adaptive to the environmental change, the underlying biological mechanism is still needed further investigations.? ?

相似文献/References:

[1]莫其锋,陈瑶,王法明,等.华南热带森林两种林下植物氮磷比对氮磷添加的响应[J].应用与环境生物学报,2015,21(05):919.[doi:10.3724/SP.J.1145.2015.03014]
 MO Qifeng,CHEN Yao,WANG Faming,et al.Nitrogen to phosphorus ratios of two understory plant species in response to nitrogen and phosphorus addition in tropical forest of southern China[J].Chinese Journal of Applied & Environmental Biology,2015,21(03):919.[doi:10.3724/SP.J.1145.2015.03014]

备注/Memo

备注/Memo:
收稿日期:2018-09-19 接受日期 Accepted: 2018-11-09*国家自然科学基金(31700371)、中国科学院退化生态系统植被恢复与管理重点实验室开放课题(DE2018023)和华南农业大学引进优秀博士科研启动基金(K16210)资助 **通讯作者(E-mail:moqifeng@scau.edu.cn)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: 2018-12-25