干旱区生态环境知识资源中心(Arid): 黄土高原农田与草原土壤种子库

Arid

	黄土高原农田与草原土壤种子库
其他题名	Soil seed banks of cropland and rangeland on the Loess Plateau
	胡安; 陈皓; 陈先江; 侯扶江
来源期刊	草业科学
ISSN	1001-0629
出版年	2015
卷号	32 期号:7 页码:1035-1040
中文摘要	为了比较黄土高原农田与草原土壤种子库之间的关系,探讨黄土高原的农业生产结构,本研究采用发芽试验法对黄土高原不同土地利用方式(农田、撂荒地、封育天然草地)下的0-10 cm土层的土壤种子库密度与组成进行了分析。结果表明,农田的土壤种子库的平均密度是1 455粒·m~(-2),共有7个物种;撂荒地的土壤种子库平均密度为1 008粒·m~(-2),共有3个物种;封育草地的土壤种子库密度为5 044粒·m~(-2),共有12个物种。对土地的不合理利用导致的撂荒地的土壤种子库密度、多样性、丰富度均最低,土壤沙化严重。封育草地的土壤种子库密度、多样性和丰富度均最高,土壤种子库在一定程度上对地表植被恢复和更新有着重要作用。因此,在生态环境脆弱的黄土高原地区改变传统的农业结构,增加草地封育年限,增加牧草种植,进而增加地表植被的密度、多样性和丰富度,从而改善生态环境。
英文摘要	In order to compare the relationship between soil seed banks of cropland and rangeland on the Loess Plateau,and to explore the agricultural production structure of the Loess Plateau,the present article studied the density and composition of soil seed banks in 0 to 10 cm soil layer under different utilization using germination experiment.The results showed that average density of soil seed for cropland,abandoned land and enclosure rangeland was 1 45 5 seeds·m~(-2),1 008 seeds·m~(-2) and 5 044 seeds·m~(-2), respectively,with a total of 7 species,3 species and 12 species,respectively.Due to unreasonable usage of land resource,the density,diversity and richness of soil seed banks for abandoned land were the lowest with serious soil desertification.Enclosure rangeland had the highest soil seed density,diversity and richness which suggested that soil seed banks in a certain extent played an important role on the surface vegetation restoration and update.Therefore,the traditional agriculture structure of the Loess Plateau area with fragile ecological environment should be changed to increase grass nurture and enclosed time,which in turn increase the density,diversity and abundance of surface vegetation,and then improve the ecological environment.
中文关键词	黄土高原 ; 农田 ; 封育草地 ; 种子库 ; 多样性
英文关键词	Loess Plateau cropland enclosure rangeland soil seed bank diversity
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:5498233
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232404
作者单位	兰州大学草地农业科技学院, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	胡安,陈皓,陈先江,等. 黄土高原农田与草原土壤种子库[J]. 兰州大学,2015,32(7):1035-1040.
APA	胡安,陈皓,陈先江,&侯扶江.(2015).黄土高原农田与草原土壤种子库.草业科学,32(7),1035-1040.
MLA	胡安,et al."黄土高原农田与草原土壤种子库".草业科学 32.7(2015):1035-1040.