干旱区生态环境知识资源中心(Arid): 不同程度石漠化对金山荚蒾末端小枝的生长和生物量积累及分配的影响

Arid

	不同程度石漠化对金山荚蒾末端小枝的生长和生物量积累及分配的影响
其他题名	Effects of rocky desertification on growth and biomass accumulation and distribution of terminal twigs in Viburnum chinshanense Graebn
	宋海燕; 张静; 赵雅洁; 滕吉; 刘锦春
来源期刊	植物科学学报
ISSN	2095-0837
出版年	2018
卷号	36 期号:1 页码:103-111
中文摘要	以金山荚蒾(Viburnum chinshanense Graebn.)末端小枝为研究对象,通过野外调查,研究不同程度(轻度、中度、重度)石漠化生境对金山荚蒾小枝的生长形态、生物量积累及分配的影响。结果表明,在石漠化地区,金山荚蒾的小枝生物量积累受到抑制,且随石漠化程度的加剧而增大,其中,小枝花的生物量相比茎、叶下降幅度最小。与无石漠化地区相比,金山荚蒾小枝的形态指标(叶片数、叶面积、比叶面积、茎长、茎径)均显著降低,且石漠化对植物小枝茎长的抑制作用大于茎径,而叶面积受到的抑制程度最大。金山荚蒾在轻度、中度石漠化地区尽可能通过提高叶生物量比、降低茎生物量比来适应石漠化生境;但金山荚蒾在3种不同程度石漠化生境中均以提高花生物量比来增加生殖投入,从而保证其繁殖能力和种群延续;其通过减小茎、叶等营养器官投资的策略来适应严苛生境,最大程度维持生态系统的格局和稳定。
英文摘要	Karst rocky desertification is a serious geological disaster in southwestern China. Viburnum chinshanense Graebn. shrubs were selected to study how growth of its terminal twigs responded to different degrees of rocky desertification by assessing its biomass accumulation and allocation and morphological plasticity. Results showed that in the rocky desertification area, twig biomass accumulation was significantly restrained, and the degree of restraint increased with the degree of rocky desertification. Compared with leaf and stem biomass, the decrease in flower biomass was minimal. Compared with non-rocky desertification, the morphological growth indexes (leaf number, leaf area, specific leaf area, stem length, and stem diameter) of V. chinshanense significantly decreased, and the inhibition of rocky desertification on stem length was greater than that of stem diameter, whereas leaf area was the most inhibited. Leaf biomass and stem biomass ratios in the slight and moderate rocky desertification habitats increased as an adaptation to such habitats. However, in three of the habitats with different degrees of rocky desertification, the reproductive investment of V. chinshanense increased by increasing the flower biomass ratio to ensure reproductive capacity and population continuity. V. chinshanense uses strategies to reduce the investment of vegetative organs, such as leaves and stems, to adapt to harsh habitats and maintain ecosystem structure and stability at the maximum degree.
中文关键词	石漠化 ; 金山荚蒾 ; 末端小枝 ; 生物量积累与分配
英文关键词	Rocky desertification Viburnum chinshanense Graebn. Terminal twigs Biomass accumulation and allocation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6194767
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238614
作者单位	西南大学生命科学学院, 三峡库区生态环境教育部重点实验室;;重庆市三峡库区植物生态与资源重点实验室, 重庆 400715, 中国
推荐引用方式 GB/T 7714	宋海燕,张静,赵雅洁,等. 不同程度石漠化对金山荚蒾末端小枝的生长和生物量积累及分配的影响[J],2018,36(1):103-111.
APA	宋海燕,张静,赵雅洁,滕吉,&刘锦春.(2018).不同程度石漠化对金山荚蒾末端小枝的生长和生物量积累及分配的影响.植物科学学报,36(1),103-111.
MLA	宋海燕,et al."不同程度石漠化对金山荚蒾末端小枝的生长和生物量积累及分配的影响".植物科学学报 36.1(2018):103-111.