[1]富远年,马风云,刘立超.不同程度干扰下人工固沙植被区生物结皮对草本植物生长的影响[J].水土保持研究,2011,18(05):87-90,95.
　FU Yuan-nian,MA Feng-yun,LIU Li-chao.Influence of Biological Soil Crust Incurred Different Intensities of Disturbance on Herbal Plants in Artificial Fixed-Dunes Area[J].Research of Soil and Water Conservation,2011,18(05):87-90,95.
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不同程度干扰下人工固沙植被区生物结皮对草本植物生长的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 18 期数: 2011年05期 页码: 87-90,95 栏目: 出版日期: 2011-10-20
Title:
Influence of Biological Soil Crust Incurred Different Intensities of Disturbance on Herbal Plants in Artificial Fixed-Dunes Area
作者:
富远年1, 马风云2, 刘立超3
1. 武威市林业技术服务中心, 甘肃 武威 733000;
2. 山东农业大学 林学院, 山东 泰安 271018;
3. 中国科学院 寒区旱区环境与工程研究所 沙坡头沙漠试验研究站, 兰州 730000
Author(s):
FU Yuan-nian1, MA Feng-yun2, LIU Li-chao3
1. Wuwei Forestry Technique Service Center, Wuwei, Gansu 733000, China;
2. College of Forestry, Shandong Agricultural University, Tai’an, Shandong 271018, China;
3. Shapotou Desert Research and Experiment Station, Cold and Arid Region Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
关键词:
人工固沙植被; 生物结皮; 干扰; 维管束植物
Keywords:
artificial fixed-dunes vegetation; biological soil crust; disturbance; vascular plant
分类号:
X171.4
摘要:
通过对沙坡头人工固沙植被区不同类型的生物结皮进行不同程度的人工干扰，对生长在结皮上的两种草本植物雾冰藜和小画眉草的繁衍和生长进行了研究。结果表明：与未受干扰的对照相比，轻度干扰下3种类型生物结皮上雾冰藜的密度、冠幅、高度、根系长度和生物量都有显著增加，重度干扰下3种类型结皮上的雾冰藜生长有所增加，密度则显著下降；轻度干扰下苔藓和藻类苔藓混生结皮上的小画眉草生长有所增加，密度基本未变，藻类结皮上小画眉草密度和生长都无显著变化。重度干扰下苔藓和藻类苔藓混生结皮上的小画眉草生长有所增加，密度和生长量下降。同时分析讨论了两种维管束植物在生物结皮受到干扰时不同表现的机理。
Abstract:
Biological soil crusts exist in a wide variety of environments around the world. It serves as an important biological factor contributing to the sand fixation. Disturbances are also widely existing phenomena in any ecosystem, especially in arid and semiarid areas in our country, where under the pressure of human population, disturbances such as grazing and trampling have important influences on the ecosystem. Our objective was to learn the influences of different disturbances for biological soil crusts on vascular plants by experiments of imitation disturbances set in artificial fixed-dunes area in Shapotou region. The results showed: the density, average crown, height, root length, and biomass of Bassia dasyphylla grown on three types of biological soil crusts increased significantly with the crusts being slightly disturbed. When the crusts were severely disturbed, the growth of Bassia dasyphylla increased moderately, while the density decreased. Under the circumstance of slight disturbance, the density and growth of Eragrostis minor grown on the moss crusts as well as on the the algae-moss crusts increased slightly and its density did not change significantly. Eragrostis minor grown on the algae crusts did not vary considerably in growth and density. With severe disturbance, Eragrostis minor grown on the moss crusts as well as on the algae-moss crusts increased slightly in height and decreased greatly in density and biomass. The growth and density of Eragrostis minor grown on the algae crusts did not change significantly. The mechanism of the different results of these two herbal plants was analyzed after the crusts were disturbed.

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备注/Memo

收稿日期:2011-3-24;修回日期:2011-6-15
基金项目:国家自然科学基金（40971031）
作者简介:富远年（1959- ），男，甘肃民勤县人，高级工程师，主要从事干旱区植被恢复和重建研究。E-mail：wwljzx@126.com

更新日期/Last Update: 1900-01-01