| 长江源区沙化高寒草地植被群落特征及其与地形因子的关系 |
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| 引用本文： | 赵鹏,屈建军,徐先英,唐进年,韩庆杰,谢胜波,王涛,赖俊华. 长江源区沙化高寒草地植被群落特征及其与地形因子的关系[J]. 生态学报, 2019, 39(3): 1030-1040 |
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| 作者姓名： | 赵鹏 屈建军 徐先英 唐进年 韩庆杰 谢胜波 王涛 赖俊华 |
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| 作者单位： | 中国科学院西北生态环境资源研究院沙漠与沙漠化重点实验室;甘肃省治沙研究所荒漠化与风沙灾害防治国家重点实验室培育基地;中国科学院西北生态环境资源研究院敦煌戈壁荒漠与环境研究站;中国科学院大学 |
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| 基金项目： | 国家重点研发计划（2017YFC0504804）；林业公益性行业科研专项经费（201504401）；国家科技支撑计划（2012BAD16B0203）；中国科学院青年创新促进会人才基金（2018459）；中国博士后科学基金项目（2014M560817，2015T81069）；兰新高铁特大风区风沙灾害防治技术（HHS-TSS-STS-1504）；甘肃省青年科学基金（1606RJYA311） |
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| 摘 要： | 草地沙化与植物群落演替关系对高寒草地生态系统功能和结构的维持具有重要的意义。以长江源区七渡口沙化高寒草地为研究对象,基于野外植物群落物种组成及地形因子调查数据,运用数量分类与排序等方法,探究了沙化高寒草地植物群落特征及其与微地形环境因子的关系。结果表明:60个调查样方中出现29个植物种,隶属16科,27属。赖草、细叶亚菊、绳虫实等植物种的出现指示高寒草地沙化处于进展之中,植被群落向旱生方向演替。物种标准频度分布在不同微地形表现各异,总体上优势种比例低于稀有种,植被群落处于高度演替阶段。TWINSPAN将沙化高寒草地划分为7个群丛类型:Ⅰ赖草+阿尔泰狗娃花+牛耳风毛菊Leymus secalinus+Heteropappus altaicus+Saussurea woodiana,Ⅱ赖草+喜马拉雅嵩草+绳虫实Leymus secalinus+Kobresia royleana+Corispermum declinatum,Ⅲ赖草+披碱草+细叶亚菊Leymus secalinus+Elymus dahuricu+Ajania tenuifolia,Ⅳ赖草+高山野决明Leymus secalinus+Thermopsis alpina,Ⅴ老芒麦+早熟禾Elymus sibiricus+Poa annua,Ⅵ老芒麦+批碱草Elymus sibiricus+Elymus dahuricus,Ⅶ绳虫实Corispermum declinatum。7个群丛在DCA排序图上的分布呈现一定的规律性。CCA排序结果表明,坡度和坡向是沙化高寒草地物种分布的微地貌主导因子。
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| 关 键 词： | 长江源区 沙化 高寒草地 群落特征 微地貌 |
| 收稿时间： | 2017-12-27 |
| 修稿时间： | 2018-09-06 |
Study on the characteristics of sandy alpine grasslands and its relationship between plant distribution and microtopography in the source regions of Yangtze River |
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| ZHAO Peng,QU Jianjun,XU Xianying,TANG Jinnian,HAN Qingjie,XIE Shengbo,WANG Tao and LAI Junhua. Study on the characteristics of sandy alpine grasslands and its relationship between plant distribution and microtopography in the source regions of Yangtze River[J]. Acta Ecologica Sinica, 2019, 39(3): 1030-1040 |
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| Authors: | ZHAO Peng QU Jianjun XU Xianying TANG Jinnian HAN Qingjie XIE Shengbo WANG Tao LAI Junhua |
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| Affiliation: | Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730010, China;State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou 730070, China;Dunhuang Gobi and Ecology and Environment Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Dunhuang 736200, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730010, China;Dunhuang Gobi and Ecology and Environment Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Dunhuang 736200, China,State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou 730070, China,State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou 730070, China,Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730010, China;Dunhuang Gobi and Ecology and Environment Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Dunhuang 736200, China,Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730010, China;Dunhuang Gobi and Ecology and Environment Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Dunhuang 736200, China,Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730010, China;Dunhuang Gobi and Ecology and Environment Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Dunhuang 736200, China and Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730010, China;Dunhuang Gobi and Ecology and Environment Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Dunhuang 736200, China |
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| Abstract: | |
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| Keywords: | source of the Yangtze River sandy alpine grassland community characteristics microtopography |
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