干旱区生态环境知识资源中心(Arid): 基于典范对应分析的河西绿洲灌区土壤盐渍化特征

Arid

	基于典范对应分析的河西绿洲灌区土壤盐渍化特征
其他题名	Characteritics of soil salinization based on canonical correspondence analysis method in the Hexi oasis irrigation district of Gansu Province
	王朋飞 1; 杨思存 1; 陈英 1; 王成宝 2; 霍琳 2; 姜万礼 2
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2016
卷号	51 期号:4 页码:92-100
中文摘要	【目的】探讨河西绿洲灌区盐渍化土壤全盐(TS)、pH值与盐分离子的数量关系及其对盐碱地类型、分布的影响.【方法】在河西绿洲灌区的甘州区和临泽县选择典型区域取样,运用常规统计学和典范对应分析方法,研究了土壤TS、pH值、盐分离子的剖面分布、数量关系和影响因子.【结果】剖面中的阳离子以Ca~(2+)和Na~+为主,阴离子以SO_4~(2-)为主,土壤pH介于8.55~8.63.不同土层内,K~+与Mg~(2+)、Ca~(2+)与SO_4~(2-)始终有较好的关联性,Na~+与Cl~-在0~20cm和40~100cm土层、SO_4~(2-)与Na~+在20~40cm土层、K~+与Na~+在40~80cm土层有较好的关联性.在0~100cm全剖面上,pH的空间分布受HCO_3~-和Na~+的影响较大,TS受SO_4~(2-)、Cl~-和Ca~(2+)的影响较大.分层与全剖面的情况有所不同,0~20cm土层内TS和pH的空间分布主要受控于SO_4~(2-)含量,20~40cm土层内受Cl~-、Na~+-、Ca~(2+)和SO_4~(2-)共同影响,40~60cm和60~80cm土层内K~+是主要影响因素,80~100cm土层内主要受控于K~+和Mg~(2+)含量.CCA第1排序轴反映了TS的变化情况,第2轴反映了pH的变化情况,第1轴特征值在0.57~0.74,解释方差在41.5%~52.4%;第2轴特征值在0.35~0.62,解释方差在36.2%~45.7%,TS是决定项目区盐碱地类型和分布的主要因素.【结论】该区土壤为轻度至重度盐化,剖面土壤盐分呈T型分布,具有明显的表聚特征.
英文摘要	【Objective】To study the quantitative relationship between distribution of TS,pH value and salt ion in soil profile in the Hexi oasis irrigation district,and the effects of them on types and distribution of saline-alkali soil.【Method】The soil samples were collected from the typical area of Ganzhou District and Linze County in the Hexi oasis irrigation district,conventional statistics and canonical correspondence analysis were used to research the distribution of TS,pH and salt ion in soil profile,quantitative relationship among them and impacting factors.【Result】The cation and anion in soil profile were Ca~(2+),Na~+and SO_4~(2-) respectively,with pH value varying between 8.55 and 8.63.K~+and Mg~(2+),Ca~(2+)and SO_4~(2-) were well correlated in all soil layers,the correlation between Na~+ and Cl~-in the layers 0~20 cm and 40~100 cm,SO_4~(2-) and Na~+in 20~40 cm soil layer,K~+ and Na~+ in 40~80 cm soil layer were all well linked.In 0~100 cm soil profile,the spatial distribution of pH was mainly controlled by HCO_3~-and Na~+,TS was mainly controlled by SO_4~(2-),Cl~-and Ca~(2+),respectively.In different soil layers,The spatial distribution of pH,TS and salt ion were different from that in the whole soil profile,the distribution of pH and TS were mainly controlled by SO_4~(2-)in 0~20 cm soil layer,by Cl~-、Na~+、Ca~(2+)and SO_4~(2-)together in 20~40 cm layer,by K~+in 40~60 cm and 60~80 cm layers,by K~+ and Mg~(2+)in 80~100 cm soil layer.Axis1 and axis 2 of CCA reflected the changes of TS and pH value,respectively.The eigenvalues and cumulative percentage varied from 0.57 to 0.74 and 41.5%to 52.4%of axis 1,respectively,and they varied from 0.35 to 0.62 and 36.2%to 45.7%of axis 2 correspondingly.TS was the main factor determining the type and distribution of saline-alkali land in the Hexi oasis irrigation district.【Conclusion】The soils in the region were lightly to severely salinized,the salt content showed T-shaped distribution pattern and obviously accumulated in surface soil.
中文关键词	盐碱地 ; 盐渍化特征 ; 典范对应分析 ; 河西绿洲灌区
英文关键词	saline-alkali land salinization characteristics canonical correspondence analysis Hexi oasis irrigation district
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:5804154
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234179
作者单位	1.甘肃农业大学资源与环境学院, 兰州, 甘肃 730070, 中国; 2.甘肃省农业科学院土壤肥料与节水农业研究所, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	王朋飞,杨思存,陈英,等. 基于典范对应分析的河西绿洲灌区土壤盐渍化特征[J]. 甘肃农业大学,2016,51(4):92-100.
APA	王朋飞,杨思存,陈英,王成宝,霍琳,&姜万礼.(2016).基于典范对应分析的河西绿洲灌区土壤盐渍化特征.甘肃农业大学学报,51(4),92-100.
MLA	王朋飞,et al."基于典范对应分析的河西绿洲灌区土壤盐渍化特征".甘肃农业大学学报 51.4(2016):92-100.