干旱区生态环境知识资源中心(Arid): 增温对蒿类荒漠草地可萌发土壤种子库及其多样性的影响

Arid

	增温对蒿类荒漠草地可萌发土壤种子库及其多样性的影响
其他题名	Effects of Warming on Seed Germination and Its Diversity in Soil Seed Bank of Artemisia Desert Grassland
	田梦; 孙宗玖; 李培英; 汪洋
来源期刊	草地学报
ISSN	1007-0435
出版年	2020
卷号	28 期号:1 页码:141-148
中文摘要	为探讨草地土壤种子库种子萌发对全球气候变暖的适应机制,本研究采用常规方法对模拟温度增加[对照(CK)、增加2℃(T2)、增加4℃(T4)、增加6℃(T6)]下中度退化蒿类荒漠草地可萌发土壤种子库数量及其多样性进行了观测。结果表明:0~5,5~10cm土层土壤种子库萌发的物种数及其幼苗总密度随温度增加呈下降趋势,且T6处理0~5(5~10)cm萌发物种数及萌发密度依次较对照降低57.1%(33.3%),70.4%(75.0%)。随温度增加,0~5,5~10cm土层蒿类荒漠可萌发土壤种子库物种组成与地上植被物种组成相似性总体呈下降趋势,且T6处理相似性最低。温度增加后蒿类荒漠土壤萌发物种的Shannon-Wiener指数、Pielou指数、Patrick指数总体呈下降趋势,且0~5cm土层较5~10cm土层下降明显。综上,增温抑制了土壤种子库种子的萌发,可能不利于退化蒿类荒漠草地的恢复。
英文摘要	In order to explore the adaptation mechanism of soil seeds in terms of germination in response to global warming,conventional methods were used to measure the number of germinated seeds and its diversity in moderately degraded Artemisia desert grassland under four different simulated temperature[conditions- CK,2℃(T2),4℃(T4)and 6℃(T6)].The results showed that the germinated plant species number and its density in 0-5cm and 5-10cm soil layer decreased with increasing temperature,and the number of germination species and density of 0-5 (5-10)cm under T6decreased by 57.1%(33.3%)and 70.4% (75.0%)respectively as compared with the CK.With increasing temperature,the Sorensen similarity between species composition of germination soil seed bank in 0-5cm and 5-10cm soil layer and aboveground vegetation decreased in Artemisia desert grassland,and the Sorensen similarity of species composition of aboveground vegetation under T6treatment was lower than other treatments.The Shannon-Wiener index, Pielou index and Patrick index of the seed germination species in Artemisiadesert grassland showed an decreasing trend in response to temperature enhancement,and the 0-5cm soil layer decreased more obviously than the 5-10cm soil layer.In short,the germination of seeds in soil seed bank was inhibited by the elevated temperature,and may impair the restoration of degraded sagebrush desert grassland.
中文关键词	温度增加 ; 蒿类荒漠草地 ; 土壤种子库 ; 植物多样性 ; 群落相似性
英文关键词	Increasing temperature Artemisia desert grassland Soil seed bank Plant diversity Community similarity
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6785065
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336796
作者单位	田梦, 新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国.; 孙宗玖, 新疆农业大学草业与环境科学学院;;西部干旱荒漠区草地资源与生态教育部重点实验室;;新疆草地资源与生态重点实验室, ;;西部干旱荒漠区草地资源与生态教育部重点实验室;;新疆草地资源与生态重点实验室, 乌鲁木齐;;乌鲁木齐;;乌鲁木齐, 新疆;;新疆;;新疆 830052;;830052;;830052, 中国.; 李培英, 新疆农业大学草业与环境科学学院;;西部干旱荒漠区草地资源与生态教育部重点实验室;;新疆草地资源与生态重点实验室, ;;西部干旱荒漠区草地资源与生态教育部重点实验室;;新疆草地资源与生态重点实验室, 乌鲁木齐;;乌鲁木齐;;乌鲁木齐, 新疆;;新疆;;新疆 830052;;830052;;830052, 中国.; 汪洋, 新疆农业大学草业与环境科学学院;;西部干旱荒漠区草地资源与生态教育部重点实验室;;新疆草地资源与生态重点实验室, ;;西部干旱荒漠区草地资源与生态教育部重点实验室;;新疆草地资源与生态重点实验室, 乌鲁木齐;;乌鲁木齐;;乌鲁木齐, 新疆;;新疆;;新疆 830052;;830052;;830052, 中国.
推荐引用方式 GB/T 7714	田梦,孙宗玖,李培英,等. 增温对蒿类荒漠草地可萌发土壤种子库及其多样性的影响[J]. 新疆农业大学,2020,28(1):141-148.
APA	田梦,孙宗玖,李培英,&汪洋.(2020).增温对蒿类荒漠草地可萌发土壤种子库及其多样性的影响.草地学报,28(1),141-148.
MLA	田梦,et al."增温对蒿类荒漠草地可萌发土壤种子库及其多样性的影响".草地学报 28.1(2020):141-148.