川西北高寒沙地草本植物群落物种组成及多样性研究

朱欣伟; 勒燕飞; 张利; 康英; 任君芳

doi:10.16779/j.cnki.1003-5508.2016.05.017

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川西北高寒沙地草本植物群落物种组成及多样性研究

朱欣伟 , 勒燕飞 , 张利 , 康英 , 任君芳

文章导航 > 四川林业科技 > 2016 > 37(5): 72-76

朱欣伟, 勒燕飞, 张利, 康英, 任君芳. 川西北高寒沙地草本植物群落物种组成及多样性研究[J]. 四川林业科技, 2016, 37(5): 72-76. doi: 10.16779/j.cnki.1003-5508.2016.05.017

引用本文:

ZHU Xin-wei, LE Yan-fei, ZHANG Li, KANG Ying, REN Jun-fang. A Study of Species Composition and Diversity of Herbaceous Plant Communities in Alpine Sandy Land in Northwest Sichuan[J]. Journal of Sichuan Forestry Science and Technology, 2016, 37(5): 72-76. doi: 10.16779/j.cnki.1003-5508.2016.05.017

Citation:

ZHU Xin-wei, LE Yan-fei, ZHANG Li, KANG Ying, REN Jun-fang. A Study of Species Composition and Diversity of Herbaceous Plant Communities in Alpine Sandy Land in Northwest Sichuan[J]. Journal of Sichuan Forestry Science and Technology, 2016, 37(5): 72-76. doi: 10.16779/j.cnki.1003-5508.2016.05.017

川西北高寒沙地草本植物群落物种组成及多样性研究

doi: 10.16779/j.cnki.1003-5508.2016.05.017

详细信息

阿坝州林业科学技术研究所，四川阿坝 623000;壤塘县环境保护和林业局，四川阿坝 624300

作者简介:
朱欣伟(1980-)男,工程师,主要从事生态建设与科技推广工作。

基金项目:
四川省科技计划项目"生态毯技术在若尔盖沙化治理中的运用与推广(2016FZ0042)"。
中图分类号: S718.54

A Study of Species Composition and Diversity of Herbaceous Plant Communities in Alpine Sandy Land in Northwest Sichuan

More Information

Aba Autonomous Prefecture Forestry Science and Technology of Institute, Wenchuan 623000, China;Rangtang County Environmental Protection and Forestry Bureau, Aba 624300, China

摘要: 高寒草地沙化严重影响了植被物种组成和物种多样性,植被对人类和动物的生存环境起着不可替代的重要作用。本文选取了川西北高寒沙区典型沙化县若尔盖、红原、阿坝、色达、稻城、理塘等6个县的典型沙化区域为研究地,对不同沙化程度的植被特征及物种多样性进行了研究。结果表明:沙化进程中,物种种类呈先升高后降低趋势,植物群落优势种不断发生演替,禾本科、莎草科种类数量逐渐减少,被菊科、蔷薇科植物等替代;物种多样性呈显著先上升后降低趋势,露沙地和流动沙地物种多样性较低,固定沙地和半固定沙地较高;β_T与C_N呈基本相反的变化趋势,物种组成随沙化程度的加剧差异更加明显。植物群落组成及物种多样性受沙化程度影响最大,但最终分布是环境及生物因子共同作用的结果。
- 川西北;
- 高寒沙地;
- 物种多样性
Abstract: The alpine grassland desertification has seriously affected the species composition of vegetation and species diversity,and vegetation plays an irreplaceable role in human and animals living environment. In this paper,the typical alpine desertification grassland areas were selected in northwest Sichuan as the research area, such as Ruoergai, Hongyuan, Aba,Seda, Daocheng and Litang counties, and studies were made of their vegetation characteristics and species diversity with different desertification degree. The results showed that with the development of the desertification, the plant species also presented a trend to increase firstly and then decrease, and the dominant species displayed a continuous succession. Gramineae and Cyperaceae plants decreased gradually,and were replaced by Asteraceae and Rosaceae plants; Species diversities were lower in exposed sandy and shifting sandy land than those in half-fixed sandy land and fixed sandy land. β_T and C_N diversity index presented an opposite trend, the difference of plant communities was in different desertification stress at the beginning, but they were ultimately determined by various environmental and biological factors together.
- Northwest Sichuan;
- Alpine desertification grassland;
- Species diversity

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川西北高寒沙地草本植物群落物种组成及多样性研究

doi: 10.16779/j.cnki.1003-5508.2016.05.017

阿坝州林业科学技术研究所，四川阿坝 623000;壤塘县环境保护和林业局，四川阿坝 624300

作者简介:
朱欣伟(1980-)男,工程师,主要从事生态建设与科技推广工作。

收稿日期: 2016-06-28

基金项目:

四川省科技计划项目"生态毯技术在若尔盖沙化治理中的运用与推广(2016FZ0042)"。

中图分类号: S718.54

关键词:

摘要: 高寒草地沙化严重影响了植被物种组成和物种多样性,植被对人类和动物的生存环境起着不可替代的重要作用。本文选取了川西北高寒沙区典型沙化县若尔盖、红原、阿坝、色达、稻城、理塘等6个县的典型沙化区域为研究地,对不同沙化程度的植被特征及物种多样性进行了研究。结果表明:沙化进程中,物种种类呈先升高后降低趋势,植物群落优势种不断发生演替,禾本科、莎草科种类数量逐渐减少,被菊科、蔷薇科植物等替代;物种多样性呈显著先上升后降低趋势,露沙地和流动沙地物种多样性较低,固定沙地和半固定沙地较高;β_T与C_N呈基本相反的变化趋势,物种组成随沙化程度的加剧差异更加明显。植物群落组成及物种多样性受沙化程度影响最大,但最终分布是环境及生物因子共同作用的结果。

English Abstract

A Study of Species Composition and Diversity of Herbaceous Plant Communities in Alpine Sandy Land in Northwest Sichuan

Aba Autonomous Prefecture Forestry Science and Technology of Institute, Wenchuan 623000, China;Rangtang County Environmental Protection and Forestry Bureau, Aba 624300, China

Received Date: 2016-06-28

Keywords:

Abstract: The alpine grassland desertification has seriously affected the species composition of vegetation and species diversity,and vegetation plays an irreplaceable role in human and animals living environment. In this paper,the typical alpine desertification grassland areas were selected in northwest Sichuan as the research area, such as Ruoergai, Hongyuan, Aba,Seda, Daocheng and Litang counties, and studies were made of their vegetation characteristics and species diversity with different desertification degree. The results showed that with the development of the desertification, the plant species also presented a trend to increase firstly and then decrease, and the dominant species displayed a continuous succession. Gramineae and Cyperaceae plants decreased gradually,and were replaced by Asteraceae and Rosaceae plants; Species diversities were lower in exposed sandy and shifting sandy land than those in half-fixed sandy land and fixed sandy land. β_T and C_N diversity index presented an opposite trend, the difference of plant communities was in different desertification stress at the beginning, but they were ultimately determined by various environmental and biological factors together.