干旱区生态环境知识资源中心(Arid): 腾格里沙漠东南缘固沙灌丛林土壤理化性质及分形维数

Arid

	腾格里沙漠东南缘固沙灌丛林土壤理化性质及分形维数
其他题名	Physical and chemical properties and fractal dimension distribution of soil under shrubs in the southern area of Tengger Dseart
	王文帆; 刘任涛; 郭志霞; 冯永宏; 蒋嘉瑜
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2021
卷号	41 期号:1
中文摘要	以腾格里沙漠固沙灌丛林为研究对象,选择大、中、小沙丘的迎风坡、丘顶和背风坡为研究样地,调查不同沙丘微地形土壤理化性质和土壤粒径分布的分形特征,阐明沙丘大小和微地形差异对固沙灌丛林土壤理化性质和土壤分形维数分布的影响规律。结果表明:(1)土壤含水率和全碳含量均表现为背风坡中部显著高于丘顶; 土壤容重表现为迎风坡中部、丘顶和背风坡底部显著高于背风坡中部,而迎风坡底部居中;沙丘微地形对土壤pH和电导率均无显著影响。土壤容重表现为大、中沙丘显著高于小沙丘;土壤电导率表现为中、小沙丘显著高于大沙丘;沙丘大小对土壤含水率、pH和全碳分布均无显著影响。(2)土壤粉粒(250 mum)含量表现为迎风坡底部>背风坡底部>迎风坡中部>丘顶,而土壤极细砂(50100 mum)含量表现为背风坡底部显著低于迎风坡中部和丘顶,土壤细砂(100 250 mum)含量表现为丘顶显著高于迎风坡底部和中部。大、中沙丘土壤颗粒组成以土壤粉粒和极细砂为主,而小沙丘则以土壤细砂为主。(3)土壤分形维数介于2 .592.78,表现为迎风坡底部显著高于背风坡底部,其他3个微地形生境居中,而且大沙丘显著高于中沙丘,而小沙丘居中。(4)粉粒含量越高,土壤电导率和全碳含量越高;极细砂含量越高,土壤电导率越低;砂粒含量越高,全碳含量越低;土壤细砂含量越多,分形维数越大。沙丘大小、微地形对土壤理化性质及分形维数的作用效果存在较大的差异性,需要根据沙丘大小和微地形来开展人工林建设和生态效应评价。
英文摘要	Soil physical and chemical properties and fractal dimension distribution characteristics of different dune micro topography after sand fixation and shrub forest construction in Tengger Desert.Taking sand fixing shrub forest in Tengger Desert as the research object,the windward slope,dune crest and leeward slope of large,medium and small sand dunes were selected as the research sample plots.Through investigating the fractal characteristics of soil physical and chemical properties and soil particle size distribution in different sand dune micro topography,the influence of sand dune size and micro topography difference on soil physical and chemical properties and soil fractal dimension distribution of sand fixing shrub forest was clarified.The results showed that:(1)The soil moisture content and total carbon were significantly higher in the middle of leeward slope than in the dune crest;the soil bulk density in the middle of the windward slope,the dune crest and the bottom of the leeward slope is significantly higher than that in the middle of the leeward slope,while the bottom of the windward slope is in the middle;and the micro topography of sand dune had no significant effect on soil pH and electrical conductivity.Moreover,the soil bulk density of large and medium-sized sand dunes is significantly higher than that of small-sized sand dunes;the soil electrical conductivity of medium and small-sized sand dunes is significantly higher than that of large-sized sand dunes;and the size of sand dunes has no significant impact on soil moisture content,pH and total carbon distribution.(2)The content of soil silt(2-50 mum)was as follows:the bottom of windward slope >the bottom of leeward slope >the middle of windward slope >the dune crest,the content of soil very fine sand(50-100 mum)was significantly lower at the bottom of leeward slope than at the middle of windward slope and at the dune crest,the soil fine sand(100-250 mum)is higher at the dune crest than at the bottom of the windward slope and in the middle of the windward slope.Large and medium sand dunes are mainly composed of soil silt and very fine sand,while small sand dunes are mainly composed of soil fine sand.(3)The fractal dimension of soil is between 2.59-2.78,which shows that the bottom of windward slope is significantly higher than the bottom of leeward slope,the other three micro terrain habitats are in the middle,and the large dune is significantly higher than the middle dune,while the small dune is in the middle.(4)Correlation analysis shows that the higher the content of silt,the higher the soil conductivity and total carbon content;the higher the content of very fine sand,the lower the soil conductivity;the higher the content of fine sand,the lower the total carbon content.The more the content of fine sand,the larger the fractal dimension.The results show that the effects of different dune micro topography on soil physical and chemical properties and fractal dimension are different.Therefore,it is necessary to carry out plantation construction and ecological effect evaluation according to the dune size and micro topography.
中文关键词	腾格里沙漠 ; 土壤理化性质 ; 分形维数 ; 土壤粒径分布
英文关键词	Tengger Desert physical and chemical properties of soil fractal dimension soil particle size distribution
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6903148
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/2XILL650/354584
作者单位	王文帆, 宁夏大学农学院;;宁夏大学;;宁夏大学, ;;西北土地退化与生态恢复国家重点实验室培育基地;;西北退化生态系统恢复与重建教育部重点实验室, 银川;;银川;;银川, 宁夏;;宁夏;;宁夏 750000;;750000;;750000, 中国. 郭志霞, 宁夏大学农学院;;宁夏大学;;宁夏大学, ;;西北土地退化与生态恢复国家重点实验室培育基地;;西北退化生态系统恢复与重建教育部重点实验室, 银川;;银川;;银川, 宁夏;;宁夏;;宁夏 750000;;750000;;750000, 中国. 冯永宏, 宁夏大学农学院;;宁夏大学;;宁夏大学, ;;西北土地退化与生态恢复国家重点实验室培育基地;;西北退化生态系统恢复与重建教育部重点实验室, 银川;;银川;;银川, 宁夏;;宁夏;;宁夏 750000;;750000;;750000, 中国. 刘任涛, 宁夏大学;;宁夏大学, 西北土地退化与生态恢复国家重点实验室培育基地;;西北退化生态系统恢复与重建教育部重点实验室, 银川;;银川, 宁夏;;宁夏 750000;;750000, 中国. 蒋嘉瑜, 宁夏大学;;宁夏大学, 西北土地退化与生态恢复国家重点实验室培育基地;;西北退化生态系统恢复与重建教育部重点实验室, 银川;;银川, 宁夏;;宁夏 750000;;750000, 中国.
推荐引用方式 GB/T 7714	王文帆,刘任涛,郭志霞,等. 腾格里沙漠东南缘固沙灌丛林土壤理化性质及分形维数[J]. 宁夏大学,2021,41(1).
APA	王文帆,刘任涛,郭志霞,冯永宏,&蒋嘉瑜.(2021).腾格里沙漠东南缘固沙灌丛林土壤理化性质及分形维数.中国沙漠,41(1).
MLA	王文帆,et al."腾格里沙漠东南缘固沙灌丛林土壤理化性质及分形维数".中国沙漠 41.1(2021).