干旱区生态环境知识资源中心(Arid): 贵州猴耳天坑地下森林苔藓植物多样性特征研究

Arid

	贵州猴耳天坑地下森林苔藓植物多样性特征研究
其他题名	Diversity of Bryophytes in Underground Forest of Monkey-Ear Tiankeng
	李小芳; 张朝晖; 李承义; 吴金; 王智慧
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2018
卷号	38 期号:12 页码:2324-2333
中文摘要	为了探索苔藓在地下森林中的多样性特征,采用梯度划分法,对贵州猴耳天坑(深度280m,坑口直径300 m)地下森林进行实地调查研究。结果表明:(1)猴耳天坑地下森林共有苔藓植物71种,包含5种不同生长基质苔藓,其中树附生苔藓物种最为丰富有41种,其余基质苔藓物种数量依次为:土附生>石面生>腐木生>叶附生。(2)地下森林苔藓生活型共计10种,喜阴暗潮湿环境的生活型种类达88%,而适应于强光干旱环境的生活型种类仅12%。(3)对地下森林不同梯度苔藓植物物种丰富度指数分析表明,坡中最高(8.461 7),依次是坡底(7.502 0)和坡顶(6.978 5),而苔藓植物Pielou均匀度指数的大小依次为:坡顶(0.945 4)>坡底(0.907 2)>坡中(0.844 5)。(4)beta多样性指数分析表明,地下森林不同梯度群落间的相异性都介于(0.75~1.00)之间,底部与顶部的相异系数高达0.960 8。(5)地下森林因其独特的地形地貌和水热条件,不仅各个梯度群落间异质性较高,而且各个群落间相异性也都较高,结构分异明显,生境复杂。(6)RDA分析表明,光照、湿度和温度是影响天坑地下森林苔藓物种分布的主要因子,其中光照度影响最大。(7)坑内与坑外物种多样性的对比研究表明,天坑地下森林苔藓植物物种多样性高,是喀斯特石漠化地区物种的天然避难所。
英文摘要	In order to explore the diversity characteristics of bryophytes in the underground forest,we use gradient method to study the diversity of bryophytes in underground forest of Monkey-ear Tiankeng, which is about-280 meters apart from the earth’s surface and its diameter is about 300 metres.Research results show that:(1)there are 71 species of bryophytes in underground forest,there are five growth matrices of bryophytes,and the trunk is the most abundant growth matrix of bryophytes(41 species).The number of the other four growth matrix species presents adecreasing trend of forest land>stone surface> carrion>leaf surface.(2)There are 10 species of life-forms in underground forest,a total of 88%of the life-form types enjoy the dark and humid environment,while only 12 percent are adapted to the bright and dry environment.(3)Studying on the Margalef of bryophytes,shows that middle(8.461 7)>bottom(7.502 0)>top(6.978 5),and Pielou of bryophytes shows that top(0.945 4)>bottom(0.907 2)>middle (0.844 5).(4)Analysis of the Bata diversity of bryophytes,which shows that the difference of bryophyte community is between(0.75-1.00)in different gradient of underground forest,and the difference between bottom and top is as high as 0.960 8.(5)Analysis shows that the underground forest has high dissimilarity not only in different gradient but also in whole forest,its structure differentiation is obvious and its habitat is complex,all of that is because of its unique topography and hydrothermal conditions.(6) RDA analysis showed that light,humidity and temperature were the main factors influencing the bryophytes species distribution of underground forest of Tiankeng,among which light had the greatest influence.(7)The comparison of species diversity in and out of Tiankeng shows that underground forest of Tiankeng has higher species diversity of bryophytes and it is a natural refuge for the species in karst rocky desertification area.
中文关键词	苔藓植物 ; 生活型 ; 多样性 ; 地下森林 ; 喀斯特天坑
英文关键词	bryophyte life-form diversity underground forest Karst Tiankeng
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:6403788
来源机构	贵州师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238501
作者单位	贵州师范大学, 贵州省山地环境信息系统与生态环境保护重点实验室, 贵阳, 贵州 550001, 中国
推荐引用方式 GB/T 7714	李小芳,张朝晖,李承义,等. 贵州猴耳天坑地下森林苔藓植物多样性特征研究[J]. 贵州师范大学,2018,38(12):2324-2333.
APA	李小芳,张朝晖,李承义,吴金,&王智慧.(2018).贵州猴耳天坑地下森林苔藓植物多样性特征研究.西北植物学报,38(12),2324-2333.
MLA	李小芳,et al."贵州猴耳天坑地下森林苔藓植物多样性特征研究".西北植物学报 38.12(2018):2324-2333.