干旱区生态环境知识资源中心(Arid): 固沙植被演替过程中藓类结皮及其表层土壤理化性质变化

Arid

	固沙植被演替过程中藓类结皮及其表层土壤理化性质变化
其他题名	Changes in physicochemical properties of moss crusts and the underlying soil during the succession of sand-binding-vegetation
	李云飞; 马晓俊; 李小军
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2020
卷号	56 期号:4 页码:463-470
中文摘要	植被恢复与重建是沙区生物土壤结皮拓殖与定居及土壤发育与演变的关键影响因素.研究了不同年代(1956、1964、1981和1987年)建植的固沙植被区藓类结皮及其下0~2和2~5cm层土壤理化性质.结果表明:不同年代固沙植被区及不同土层的理化性质之间存在显著差异$left( {P < 0.05} ight)$.藓类结皮厚度及其表层土壤黏粒含量、粉粒含量、孔隙度、土壤持水能力、有机碳、无机碳、总碳、碱解氮、全氮、速效磷、速效钾和电导率均随植被恢复年限延长而逐渐增大,随土层深度增加而减小;沙粒含量、容重和pH则相反.除容重外,其他理化性质在表层土壤与结皮层之间存在显著正相关关系$ left( {P < 0.05} ight)$,且其相关性随土层深度的增加而减小.表明沙区植被恢复与重建促进了生物土壤结皮的拓殖和发育,这一过程是荒漠生态系统成土过程和土壤理化性质变化的关键影响因素.
英文摘要	Vegetation restoration and reconstruction are key factors affecting the colonization and settlement of biological soil crusts(BSCs)and soil development and evolution in sandy areas.Physicochemical properties of moss crusts and the underlying soil in the revegetation areas of different periods(established in 1956,1964,1981 and 1987,respectively)in the Tengger Desert were investigated to explore the dynamic patterns of the physicochemical characteristics of moss crusts along the process of vegetation restoration,and to address the possible impact of crust on the underlying soil.The results showed that there were significant differences in all the parameters between different-era vegetation areas and different soil layers $left( {P < 0.05} ight)$.Thickness of moss crust increased with the age of revegetation,and the porosity,content of clay and silt,soil water holding capacity and the concentrations of organic carbon,inorganic carbon,total carbon,available nitrogen,total nitrogen,available phosphorus,available potassium and electronic conductivity of both the crust layer and underlying soil increased with the sand age,while decreased with the increase of soil depth.The content of sand,bulk density and pH showed opposite trends.Except for the bulk density,other properties of subsoils were significantly positively correlated with those of crusts $left( {P < 0.05} ight)$,and the correlation decreased with the increasing of soil depth.The results suggested that revegetation in sand land could facilitate the expansion and development of BSCs,constituting a key factor that affects the soil formation process and the evolution of soil physicochemical properties in desert ecosystem.
中文关键词	生物土壤结皮 ; 藓类结皮 ; 表层土壤 ; 理化性质 ; 固沙植被区
英文关键词	biological soil crust moss crust topsoil physicochemical property revegetation area
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6825099
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353642
作者单位	李云飞, 中国科学院西北生态环境资源研究院;;中国科学院大学, 中国科学院沙坡头沙漠研究试验站;;, 兰州;;, ;;北京 730000;;101408. 马晓俊, 中国科学院西北生态环境资源研究院;;中国科学院大学, 中国科学院沙坡头沙漠研究试验站;;, 兰州;;, ;;北京 730000;;101408. 李小军, 中国科学院西北生态环境资源研究院, 中国科学院沙坡头沙漠研究试验站, 兰州, 甘肃 730000, 中国.
推荐引用方式 GB/T 7714	李云飞,马晓俊,李小军. 固沙植被演替过程中藓类结皮及其表层土壤理化性质变化[J]. 中国科学院西北生态环境资源研究院,2020,56(4):463-470.
APA	李云飞,马晓俊,&李小军.(2020).固沙植被演替过程中藓类结皮及其表层土壤理化性质变化.兰州大学学报. 自然科学版,56(4),463-470.
MLA	李云飞,et al."固沙植被演替过程中藓类结皮及其表层土壤理化性质变化".兰州大学学报. 自然科学版 56.4(2020):463-470.