秦岭西段珍稀物种红豆杉的物种多样性特征和生境评价

doi:10.14088/j.cnki.issn0439-8114.2019.06.020

湖北农业科学 ›› 2019, Vol. 58 ›› Issue (6): 92-96.doi: 10.14088/j.cnki.issn0439-8114.2019.06.020

秦岭西段珍稀物种红豆杉的物种多样性特征和生境评价

裴洁¹, 巨天珍¹, 刘文桢¹, 牟瑞强², 张国强¹, 马建伟¹

1.西北师范大学地理与环境科学学院,兰州 730070;
2.甘肃省小陇山林业科学研究所,甘肃天水 741022

收稿日期:2018-12-20 出版日期:2019-03-25 发布日期:2019-12-03
通讯作者: 巨天珍（1965-）,女,教授,主要从事城市生态学方面的研究,（电子信箱）139344545@qq.com。
作者简介:裴洁（1992-）,女,山西太原人,硕士,主要从事城市生态学方面的研究,（电话）17726944545（电子信箱）247769452@qq.com
基金资助:
国家自然科学基金项目（41161080）; 甘肃省科技计划项目（2010GS05134）

The characteristic of species diversity and habitat evaluation in rare yew community in the west of the Qinglin mountain

PEI Jie¹, JU Tian-zhen¹, LIU Wen-zhen¹, MOU Rui-qiang², ZHANG Guo-qiang¹, MA Jian-wei¹

1.College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070,China;
2.Forestry Research Institute of Xiaolong Mountains Forestry Experimental Bureau,Tianshui 741022,Gansu,China

Received:2018-12-20 Online:2019-03-25 Published:2019-12-03

摘要/Abstract

摘要： 对秦岭西段小陇山国家级自然保护区国家级珍稀物种红豆杉林的生物多样性及其生境进行了评价。结果表明,红豆杉林乔木层丰富度指数均值为7.25,多样性指数均值为0.58,均匀度均值为0.29。多样性指数灌木层>草本层>乔木层;红豆杉乔木层物种多样性、丰富度指数、均匀度指数均随海拔的升高表现为先升高后降低的单峰变化,而优势度则随着海拔的升高呈J形增加趋势。乔木层物种多样性、丰富度指数、均匀度指数和优势度指数与林龄的关系表现出与海拔类似的情形;木层的物种多样性、丰富度指数、均匀度指数与土壤肥力指标呈正相关,与总氮、有效氮以及有机质的关系最为密切;优势度则与土壤肥力指标呈负相关;阈值评价显示,红豆杉林生境处于清洁等级,整体的生存环境良好。

关键词: 物种多样性, 红豆杉群落, 多样性阈值评价, Shannon-Wiener多样性指数评价, 小陇山国家级自然保护区, 秦岭西段

Abstract: The biodiversity and habitat of Taxus chinensis forest, a rare species, were evaluated in Xiaolongshan National Nature Reserve in the western part of Qinling mountains, the results showed that the mean value of richness index was 7.25, and diversity index average value was 0.58, evenness index average value was 0.29, in tree layer of Taxus chinensis communities. The order of diversity index was shrub layer>herbaceous layer>arbor layer. The change of tree species richness index, species diversity index and evenness index, in Taxus chinensis communities, which were all presented obvious single apex with the increasing elevation. However, for species dominance, it was showed that the J type growth trend with altitude. The relationship among species richness index,diversity index,evenness index and species dominance with forest age suggested similar to elevation. The species diversity index, species richness index and evenness index were significantly correlated with soil fertility indices, especially total nitrogen, available nitrogen, and organic matter. The change of species dominance was quite the contrary. The living environment of Taxus chinensis communities is good, and habitat is in clean levels in general, meanwhile, diversity of species quite rich, and living conditions is better.

Key words: diversity of species, taxus chinensis community, threshold value evaluation of diversity, Shannon-wiener diversity index evaluation, national nature reserve of Xiaolong mountains, west of the Qinglin mountain

中图分类号:

S791.241.8

裴洁, 巨天珍, 刘文桢, 牟瑞强, 张国强, 马建伟. 秦岭西段珍稀物种红豆杉的物种多样性特征和生境评价[J]. 湖北农业科学, 2019, 58(6): 92-96.

PEI Jie, JU Tian-zhen, LIU Wen-zhen, MOU Rui-qiang, ZHANG Guo-qiang, MA Jian-wei. The characteristic of species diversity and habitat evaluation in rare yew community in the west of the Qinglin mountain[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(6): 92-96.

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秦岭西段珍稀物种红豆杉的物种多样性特征和生境评价

The characteristic of species diversity and habitat evaluation in rare yew community in the west of the Qinglin mountain

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