干旱区生态环境知识资源中心(Arid): 精河绿洲盐渍土表层土壤盐分因子的空间变异及分布格局

Arid

	精河绿洲盐渍土表层土壤盐分因子的空间变异及分布格局
其他题名	Analysis of Distribution Patterns and Spatial Variability of Soil Salinity Affecting Factors in Topsoil Layer of Salinized Soil in Jinghe Oasis
	张飞1 ; 李怡博 2; 王东芳 1; 王小平 1; 张海威 1; 陈丽华 3
来源期刊	生态与农村环境学报
ISSN	1673-4831
出版年	2018
卷号	34 期号:1 页码:64-73
中文摘要	土壤含盐量、电导率和pH值是调查评价土壤盐渍化程度的主要因子,对其进行定量探讨及空间异质性研究是解决土壤盐渍化快速诊断问题的前提.以新疆精河绿洲为研究区,利用3S技术并结合Google Earth进行实地调查,结果表明:(1)精河绿洲表层土壤0~10 cm层含盐量和电导率呈强变异强度,变异系数分别为1.053和1.146;>10~20 cm层的土壤电导率变异系数为2.385,也呈强变异.绿洲表层土壤0~10 cm以及>10~20 cm层pH值的变异系数均小于10%,属于弱空间变异;(2)通过空间插值方法发现,0~10和>10~20 cm层的土壤电导率和含盐量高值区主要集中在艾比湖东南部和西北部,由于受到各种自然与人文因素的影响,土壤电导率和含盐量较高,盐渍化程度较高;而在艾比湖西侧以及以耕地为主的绿洲内部植被覆盖度较高,盐渍化程度较低.2层土壤的pH值的分布并无明显的变化规律,呈现出高低值交错分布的状态;(3)含盐量的空间自相关指数从0~10 cm层的0.306增加到>10~20 cm层的0.5270研究区土壤含盐量自西南向东部逐渐增加,0~10 cm层以及>10~20 cm层盐分含量呈相同的空间变化趋势且含盐量在空间上具有较强的依赖关系.该研究对于及时掌握盐渍化程度与分布、合理制定土地利用政策与生态改良措施、实现区域可持续发展等方面具有重要作用.
英文摘要	Salt content,electrical conductivity (EC) and pH of soil are the major factors in assessing salinization degree of the soil,so the study to quantify their spatial heterogeneities is the precursor of solving the problem of rapid diagnosis of soil salinization. The authors chose the Jinghe Oasis as their study area,and used the 3S"technology combined with the Google Earth in field survey. Results show: (1) salt content and electrical conductivity in topsoil (0-10 cm) varied vigorously with variation coefficient being 1.053 and 1.146,respectively; soil electrical conductivity in the >10-20 cm soil layer reached 2.385,indicating strong variability, too. However,pH was less than 10% in variation coefficient in both the 0-10 cm and >10-20 cm soil layers, indicating mild spatial variability; (2) the performance of the spatial interpolation method indicates that soils high in electrical conductivity and salt content in the 0-10 cm and >10-20 cm soil layers were concentrated mainly in the parts southeast and northwest to Lake Ebinur, where the soils were quite high in soil electrical conductivity,and salt content and in soil salinization degree too,as affected by natural and human factors ; while the soils low in salinization degree were in the part west to Lake Ebinur, and the farmland-dominated center of the oasis, thanks to the high vegetation coverage. The distributions of pH values in the two soil layers did not exhibit any specific rule of variation ,but an interlacement of high and low pH values; (3) spatial autocorrelation index of soil salt content increased from 0.306 in the 0-10 cm soil layer to 0.527 in the >10-20 cm soil layer ; and soil salt content in the study area displayed a trend of increasing gradually from southwest to east,regardless of soil layer,and spatially soil salt contents were strongly mutually-dependent. All the findings of the study demonstrate that the study is of great significance to timely following changes in salinization degree and soil salt content distribution, formulating reasonable land use policies and ecology improvement measures for land use and realizing sustainable development of the region.
中文关键词	盐渍土 ; 空间变异 ; 分布格局 ; 精河绿洲
英文关键词	salinized soil spatial variability distribution pattern Jinghe Oasis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6163780
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238212
作者单位	1.新疆大学资源与环境科学学院;;新疆大学, 智慧城市与环境建模普通高校重点实验室;;绿洲生态教育部重点实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830046;;830046, 中国; 2.博州水利水电勘测设计院, 博乐, 新疆 833400, 中国; 3.新疆艾比湖湿地国家级自然保护区管理局, 博乐, 新疆 833400, 中国
推荐引用方式 GB/T 7714	张飞,李怡博,王东芳,等. 精河绿洲盐渍土表层土壤盐分因子的空间变异及分布格局[J]. 新疆大学,2018,34(1):64-73.
APA	张飞,李怡博,王东芳,王小平,张海威,&陈丽华.(2018).精河绿洲盐渍土表层土壤盐分因子的空间变异及分布格局.生态与农村环境学报,34(1),64-73.
MLA	张飞,et al."精河绿洲盐渍土表层土壤盐分因子的空间变异及分布格局".生态与农村环境学报 34.1(2018):64-73.