干旱区生态环境知识资源中心(Arid): 模拟增雨条件下沙质草地地表植被和节肢动物群落变化特征

Arid

	模拟增雨条件下沙质草地地表植被和节肢动物群落变化特征
其他题名	Variations of ground vegetation and arthropod communities under simulating precipitation in sandy grassland
	朱凡 1; 刘任涛 2; 贺达汉 3
来源期刊	草业科学
ISSN	1001-0629
出版年	2014
卷号	31 期号:12 页码:2333-2341
中文摘要	以宁夏荒漠草原区沙质草地为研究对象,设置对照、增雨20%、40%、60%、100%5种处理样地,通过调查土壤、植被及地面节肢动物群落特征,初步分析了地表植被和节肢动物群落对当年模拟降雨变化的响应规律。结果表明,1)在增雨试验前,不同处理样地间土壤理化性质、地表植被个体数、类群数和平均高度以及地面节肢动物个体数和类群数均未出现显著差异(P>0.05),说明试验样地设置的相似性和试验方法可行。2)模拟降雨处理后,地表植物丰富度受降雨处理的影响较小,而在秋季,地表植物个体数表现为增雨40%样地显著低于对照样地(P<0.05),植物平均高度表现为增雨20%和40%样地显著低于对照样地(P<0.05)。3)模拟降雨处理后,地面节肢动物个体数受降雨处理的影响较小,而在秋季地面节肢动物类群数表现为增雨20%、60%和100%样地显著高于对照样地(P<0.05)。研究表明,基于影响因子设置不同处理试验样地需综合考虑土壤、植被和节肢动物特征,地面植被个体数和高度以及地面节肢动物类群数对降雨处理响应更为敏感,并存在一定的时滞性。
英文摘要	In order to reveal the response of vegetation and arthropods community to simulating precipitation,the soil properties,vegetation and arthropods characteristics of sandy grassland in desert steppe of Ningxia were evaluated under different treatments including natural precipitation (control) ,20% more simulating precipitation,40% more simulating precipitation,60% more simulating precipitation and 100% more simulating precipitation. There was no significant difference in soil,vegetation,and arthropods properties between the different treatment plots and prior experiment,which suggested the similarity of experiment plots and practicability of experimental design. After treatments,simulating precipitation had little effects on plant species richness. However,in the autumn,plant density with 40% more simulating precipitation was significantly (P < 0. 05) lower than that with control,and plant height with 20% and 40% more simulating precipitation was significantly (P < 0. 05) lower than that with control. Meanwhile,simulating precipitation also had little effects on arthropod abundance. In the autumn,the arthropod species richness with 20%,60% and 100% more simulating precipitation were significantly (P < 0. 05) higher than that with control. The present results suggested that the comprehensive consideration of all the factors including soil,vegetation and arthropods was necessary for experimental design. The plant abundance and height and arthropod species richness were relatively sensitive to the precipitation although there was time delay.
中文关键词	荒漠草原 ; 降雨变化 ; 植物群落 ; 土壤动物
英文关键词	desert steppe precipitation plant community soil arthropod
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5322112
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230857
作者单位	1.宁夏大学农学院, 西北退化生态系统恢复与重建教育部重点实验室, 银川, 宁夏 750021, 中国; 2.巴伊兰大学生命科学学院, 西北退化生态系统恢复与重建教育部重点实验室, 拉马特甘, 5290002, 以色列; 3.宁夏大学农学院, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	朱凡,刘任涛,贺达汉. 模拟增雨条件下沙质草地地表植被和节肢动物群落变化特征[J]. 宁夏大学,2014,31(12):2333-2341.
APA	朱凡,刘任涛,&贺达汉.(2014).模拟增雨条件下沙质草地地表植被和节肢动物群落变化特征.草业科学,31(12),2333-2341.
MLA	朱凡,et al."模拟增雨条件下沙质草地地表植被和节肢动物群落变化特征".草业科学 31.12(2014):2333-2341.