|本期目录/Table of Contents|

[1]张昂**.中国北方半干旱草地凋落物添加与去除对生态系统微环境和幼苗建植的影响*[J].应用与环境生物学报,2019,25(06):1-6.[doi:10.19675/j.cnki.1006-687x.2019.02004]
 ZHANG Ang**.Effects of litter addition and removal on the recruitment of seedlings in semi-arid grassland in northern China*[J].Chinese Journal of Applied & Environmental Biology,2019,25(06):1-6.[doi:10.19675/j.cnki.1006-687x.2019.02004]
点击复制

中国北方半干旱草地凋落物添加与去除对生态系统微环境和幼苗建植的影响*()
分享到:

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

卷:
25卷
期数:
2019年06期
页码:
1-6
栏目:
出版日期:
2019-12-30

文章信息/Info

Title:
Effects of litter addition and removal on the recruitment of seedlings in semi-arid grassland in northern China*
作者:
张昂**
河南大学生命科学学院/河南省全球变化生态学国际联合实验室 开封 475004
Author(s):
ZHANG Ang**
International Joint Research Laboratory for Global Change Ecology/School of Life Sciences, Henan University, Kaifeng 475004, China
关键词:
凋落物草地群落种子萌发群路结构结构方程模型
Keywords:
plant litter plant community seed germination community structure structural equation model
DOI:
10.19675/j.cnki.1006-687x.2019.02004
摘要:
凋落物作为草原生态系统的重要组成部分,直接参与调控生态系统微环境、种子萌发和植被更新过程。然而目前研究主要关注凋落物自身特性对幼苗建植的影响,而凋落物管理方式对生态系统微环境和植物群落幼苗建植及其交互作用的影响却鲜有报道。以内蒙古半干旱草地为研究对象,采用野外原位盆栽控制试验,探讨凋落物添加和去除对自然草地植物幼苗建植的影响机理。结果显示,(1)凋落物添加和去除显著降低了植物群落幼苗建植数,分别降低22.99%和22.19%;(2)幼苗建植数与土壤含水量存在正相关关系,而幼苗建植数与近地表光合有效辐射和土壤温度呈负相关关系;(3)尽管凋落物添加通过降低光合有效辐射和土壤温度对幼苗建植有潜在的间接促进作用,但凋落物添加可能通过凋落物自身特性(机械覆盖或化感作用等)最终直接抑制幼苗建植,而凋落物去除是通过提高地表辐射和土壤温度间接抑制幼苗建植。本研究表明,过多或过少的凋落物累积量通过改变幼苗建植所需微环境以及引起生态系统资源配置失衡,对群落幼苗建植过程产生负效应;结果可为该地区草地生态恢复与持续利用模式提供理论支持。(图3 表2 参37)
Abstract:
As an important component of grassland ecosystem, plant litter directly affects ecosystem microclimate, seed germination and vegetation regeneration process. However, previous research focuses on the effects of litter characteristics on seedling establishment, but the effects of litter management on ecosystem microclimate, plant community seedling recruitment and their interaction have rarely been reported. A field pot experiment was established in Inner Mongolia, China to explore the mechanism of litter addition and removal on plant seedling recruitment under natural conditions. The results showed that: (1) litter addition and removal significantly reduced the plant community seedling recruitment by 22.99% and 22.19%, respectively; (2) soil water content had a positive correlation with seedling recruitment, while photosynthetic active radiation and soil temperature had negative correlation with seedling recruitment; (3) litter addition was directly inhibit seedling recruitment by mechanical damage or allelopathy, although litter addition has an indirect potential stimulation on seedling recruitment by reducing photosynthetically active radiation and soil temperature, while litter removal indirectly inhibits seedling recruitment by increasing photosynthetic active radiation and soil temperature. The results suggested that the excess or lack of litter accumulation has a negative effect on the recruitment of plant seedlings by altering the microclimate required for seedling regeneration and causing imbalances in ecosystem resource allocation. The conclusions of this study can provide theoretical support for grassland ecological restoration and sustainable use patterns in the region.

相似文献/References:

[1]郭培培,江洪,余树全,等.亚热带6种针叶和阔叶树种凋落叶分解比较[J].应用与环境生物学报,2009,15(05):655.[doi:10.3724/SP.J.1145.2009.00655]
 GUO Peipei,JIANG Hong,YU Shuquan,et al.Comparison of Litter Decomposition of Six Species of Coniferous and Broad-leaved Trees in Subtropical China[J].Chinese Journal of Applied & Environmental Biology,2009,15(06):655.[doi:10.3724/SP.J.1145.2009.00655]
[2]张伟东,汪思龙,杨会侠,等.树种和凋落物对杉木林土壤微生物性质的影响[J].应用与环境生物学报,2010,16(02):168.[doi:10.3724/SP.J.1145.2010.00168]
 ZHANG Weidong,WANG Silong,YANG Huixia,et al.Effects of Broad-leaved Trees and Litter on Productivity and Soil Microbes of Chinese Fir Plantation[J].Chinese Journal of Applied & Environmental Biology,2010,16(06):168.[doi:10.3724/SP.J.1145.2010.00168]
[3]何帆,王得祥,张宋智,等.小陇山林区主要森林群落凋落物及死木质残体储量[J].应用与环境生物学报,2011,17(01):46.[doi:10.3724/SP.J.1145.2011.00046]
 HE Fan,WANG Dexiang,ZHANG Songzhi,et al.Reserves of Litter and Woody Debris of Two Main Forests in the Xiaolong Mountains, Gansu, China[J].Chinese Journal of Applied & Environmental Biology,2011,17(06):46.[doi:10.3724/SP.J.1145.2011.00046]
[4]刘瑞龙,杨万勤,吴福忠,等.川西亚高山/高山森林凋落物分解过程中土壤动物群落结构及其多样性动态[J].应用与环境生物学报,2014,20(03):499.[doi:10.3724/SP.J.1145.2014.09045]
 LIU Ruilong,YANG Wanqin,WU Fuzhong,et al.Soil fauna community structure and diversity during foliar litter decomposition in the subalpine/alpine forests of western Sichuan[J].Chinese Journal of Applied & Environmental Biology,2014,20(06):499.[doi:10.3724/SP.J.1145.2014.09045]
[5]左强,何怀江,赵秀海.改变碳源输入对蛟河红松阔叶混交林土壤呼吸的影响[J].应用与环境生物学报,2015,21(06):1136.[doi:10.3724/SP.J.1145.2015.04035]
 ZUO Qiang,HE Huaijiang,ZHAO Xiuhai.Influence of carbon input changes on the soil respiration in a mixed broadleaved-Korean pine forest in western foothill of Changbai Mountain[J].Chinese Journal of Applied & Environmental Biology,2015,21(06):1136.[doi:10.3724/SP.J.1145.2015.04035]
[6]杨佳萍,寥蓉,杨万勤,等.高山峡谷区暗针叶林凋落物产量及动态[J].应用与环境生物学报,2017,23(04):745.[doi:10.3724/SP.J.1145.2017.03020]
 YANG Jiaping,LIAO Rong,YANG Wanqin,et al.Distribution of net-collected phytoplankton in relation to environmental factors in spring and autumn in Oujiang River estuary[J].Chinese Journal of Applied & Environmental Biology,2017,23(06):745.[doi:10.3724/SP.J.1145.2017.03020]
[7]陈文静,祁凯斌,黄俊胜,等.川西次生灌丛和不同类型人工林对土壤养分的影响[J].应用与环境生物学报,2017,23(06):1081.[doi:10.3724/SP.J.1145.2017.01013]
 CHEN Wenjing,QI Kaibin,et al.Effect of shrubland and reforestation with different tree species on soil nutrients in western Sichuan Province[J].Chinese Journal of Applied & Environmental Biology,2017,23(06):1081.[doi:10.3724/SP.J.1145.2017.01013]
[8]李 翔 王海燕** 秦倩倩 王卓晖 解雅麟 王福增 郑永林 耿 琦.林分密度对半分解层凋落物现存量空间异质性的影响*[J].应用与环境生物学报,2019,25(04):1.
 Effects of stand density on spatial heterogeneity of standing crop in semi-decomposition litter layer*.CLC S718.5[J].Chinese Journal of Applied & Environmental Biology,2019,25(06):1.

备注/Memo

备注/Memo:
收稿日期 Received: 2019-02-02 接受日期 Accepted: 2019-03-14
*国家自然科学基金项目(31670477)资助 Supported by the National Natural Science Foundation of China (31670477)
**通讯作者 Corresponding author (E-mail: angzhang_henu@163.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: 2019-03-15