中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 毛乌素沙地油蒿群落生物结皮的分布特征 水土保持通报 2014,34 (3) 227-230
Position: Home > Articles > Distribution Characteristics of Biological Soil Crust for Artemisis Ordosica Community in Mu Us Sandy Land Bulletin of Soil and Water Conservation 2014,34 (3) 227-230

毛乌素沙地油蒿群落生物结皮的分布特征

作  者：
张军红
单  位：
重庆水利电力职业技术学院
关键词：
毛乌素沙地;油蒿群落;生物结皮;放牧强度
摘  要：
为研究毛乌素沙地油蒿群落中生物结皮分布状况,根据放牧强度选取沙利(禁牧)、陶利(轻度放牧)和乌审召(正常放牧)3个试验点,分别调查了油蒿群落中固定沙地和半固定沙地植被盖度、油蒿盖度、生物结皮盖度、凋落物盖度、生物结皮破碎度、生物结皮厚度等指标。结果表明,毛乌素沙地油蒿群落中固定沙地生物结皮平均盖度为83.74%,半固定沙地生物结皮平均盖度为23.54%;油蒿群落中半固定沙地生物结皮绝大部分是处于初期发育阶段的藻结皮,而固定沙地苔藓和地衣结皮所占比例接近总盖度的1/2;半固定沙地大多数处于初期发育阶段的生物结皮受上层植被的影响更大;轻度放牧干扰对油蒿群落固定沙地生物结皮盖度和厚度的影响均不显著,而正常的放牧干扰会导致生物结皮盖度显著下降;半固定沙地生物结皮对放牧干扰的影响更为敏感,即使是轻微的放牧干扰,也会产生与正常放牧干扰相当的效果。
译  名：
Distribution Characteristics of Biological Soil Crust for Artemisis Ordosica Community in Mu Us Sandy Land
作  者：
ZHANG Jun-hong;Chongqing Water Resources and Electric Engineering College;
关键词：
Mu Us sandy land;;Artemisia ordosica community;;biological soil crust;;grazing intensity
摘  要：
The three experimental sites of Shali(no grazing),Taoli(light grazing)and Wushenzhao(normal grazing)were selected according to grazing intensity to study the distribution characteristics of biological soil crust(BSC)for Artemisia ordosicacommunity in Mu Us sandy land.The vegetation coverage,Artemisia ordosica coverage,BSC coverage,litter-fall coverage,fragmentation of BSC and its thickness in each experimental site were investigated for the fixed and semi-fixed sandy lands with Artemisia ordosica community.Results showed that the BSC coverage averaged 83.74%in fixed sandy land and 23.54%in semi-fixed sandy land.The BSC in semi-fixed sandy land was mostly the alga crust belonging to the initial developmental stage,while about half the BSC in the fixed sandy land was the mosses and lichen dominated crust.The coverage and thickness of BSC did not showed significant differences between grazing and light grazing in fixed sandy land,but normal grazing led to the significantly decreased coverage and thickness of BSC.The BSC in semi-fixed sandy land were more sensitive to distribution,even if a slight grazing disturbance would produce a considerable interference like normal grazing.

相似文章

导出引用
计量
文章访问数: 12
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46