干旱区生态环境知识资源中心(Arid): 践踏胁迫对东北百里香种群主要数量特征及生理的影响

Arid

	践踏胁迫对东北百里香种群主要数量特征及生理的影响
其他题名	Effects of different trample intensities on quantitative characteristics and physiology indices of Thymus mandschuricus
	王玲 1; 刘桂伶 1; 朱振亚 1; 闫绍鹏 2
来源期刊	草业科学
ISSN	1001-0629
出版年	2014
卷号	31 期号:9 页码:1659-1665
中文摘要	结合新地被种类推广应用的需求,以节水抗旱的野生芳香型观花木本地被植物东北百里香 (Thymus mandschuricus) 为试验材料,用践踏器模拟人为践踏,研究了践踏胁迫对东北百里香的种群主要数量特征、生理的影响。结果表明,与对照区相比,低频率的轻度践踏对植株的生物量、植株高度、单位叶片密度等种群主要数量特征影响相对较小,且4~7d内完全恢复;中度、重度践踏对东北百里香地上部分生物量及主要形态有较大影响,中度践踏30d后可恢复;重度践踏样区植株当年不可恢复。生理指标显示,随着践踏强度的增加,东北百里香体内丙二醛、可溶性糖、蛋白质和脯氨酸的含量增多,表现出较强的践踏适应性,但重度践踏胁迫对枝条损害严重,各项生理指标显著上升 (P>0.05),植株地上部分很难自身调节修复伤害。轻度践踏处理下,植株种群主要数量特征和生理指标随践踏轮数的增加变化不显著 (P>0.05),而中度、重度践踏处理随着践踏轮数的增加各项指标呈现显著差异。东北百里香枝条柔韧性好使其耐一定程度践踏,这不同于一般的木本地被植物。园林应用在不影响观赏性情况下,容许轻度践踏。
英文摘要	Thymus mandschuricus,as an endemic species,is a kind of perfect wild fragrant ornamental ground cover plant with water-saving and drought-resistance characteristics.The plant has a wild prospect at the aspect of landscaping and the restoration of vegetation in arid areas.T.mandschuricus was introduced and planted by Northeast Forest University with the necessary of popularizing and applying new cover plant species.Trample device was employed to simulate human trample on T.mandschuricus.The results showed that low frequency and light trample intensity had less effects on biomass of T.mandschuricus.Moderate and severe trample intensity had significant effects on the aboveground biomass and ornamental characteristic.Light trampled plots were not different with the control plots and recovered within 4~7 days.However,moderate and severe trampled plots were significantly different with the control plots.The moderate trample plants plots were recovered within 30 days.The malondialdehyde (MDA),soluble carbohydrate,soluble protein,and proline of T.mandschuricus increased with the increase of trample intensity which suggested that T.mandschuricus has strong tolerance to trample.However,plant physiological indices increased significantly under severe trample stress and the branches suffered heavily damage which could not be recovered in one year.Light trample intensity had less effects on quantitative characteristics and physiology with increase of trampling circulation.Moderate and severe trample had significantly effects (P<0.05) on quantitative characteristics and physiology with increase of trampling circulation.The flexibility of T.mandschuricus branches provided strong tolerance to trample which was different with general woody ground cover plants.
中文关键词	东北百里香 ; 践踏胁迫 ; 种群主要数量特征 ; 生理指标
英文关键词	Thymus mandschuricus trample quantitative characteristics physiology index
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY ; PLANT SCIENCES
WOS研究方向	Agriculture ; Plant Sciences
CSCD记录号	CSCD:5259172
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230848
作者单位	1.东北林业大学园林学院, 哈尔滨, 黑龙江 150040, 中国; 2.东北林业大学生命科学学院, 哈尔滨, 黑龙江 150040, 中国
推荐引用方式 GB/T 7714	王玲,刘桂伶,朱振亚,等. 践踏胁迫对东北百里香种群主要数量特征及生理的影响[J],2014,31(9):1659-1665.
APA	王玲,刘桂伶,朱振亚,&闫绍鹏.(2014).践踏胁迫对东北百里香种群主要数量特征及生理的影响.草业科学,31(9),1659-1665.
MLA	王玲,et al."践踏胁迫对东北百里香种群主要数量特征及生理的影响".草业科学 31.9(2014):1659-1665.