干旱区生态环境知识资源中心(Arid): 银川平原土壤盐分及盐渍土的空间分布格局

Arid

	银川平原土壤盐分及盐渍土的空间分布格局
其他题名	Spatial distribution pattern of soil salinity and saline soil in Yinchuan plain of China
	张源沛 1; 胡克林 1; 李保国 1; 周丽娜 2; 罗昀 2; 朱建宁 2
ISSN	1002-6819
出版年	2009
卷号	25 期号:7 页码:19-24
中文摘要	系统认识和掌握盐渍土的空间分布特征,是治理改良盐渍土的基础.在总面积约6 184.9 km~2的银川平原引黄灌区布设101个采样点,分层(0～180 cm)测定了土壤全盐量,应用地统计学方法结合GIS技术对其空间分布特征进行了研究.结果表明,银川平原各层土壤盐分的分布类型均比较复杂,呈高度的偏态分布.土壤盐分的变异属于中等变异强度.0～120 cm土层盐分的空间相关距离一般在20～28 km;而深层(>120 cm)土壤的空间相关距离较大,约34 km.银川平原表层土壤属于非盐化土、轻度、中度、重度盐渍土和盐土的土地面积分别为0、1 508.8、3 614.9、982.6和 78.6 km~2,总体属于中度和轻度盐化土类型,且呈现一定的盐分表聚趋势.重度盐渍土和盐土主要分布在银北的石嘴山市、平罗县、惠农县一带和银南的部分地区.总体来说,银川平原的土壤盐渍化现象依然严重,应加强研究与治理改良.
英文摘要	Understanding the characteristics of spatial distribution of saline soil is important in establishing strategies for soil salinity management.One hundred and one soil samples were collected from 0 to 180 cm in irrigation areas in Yinchuan Plain with an area of 6184.9 km~2 and soil salinity for each sample was measured.The geostatistical method and GIS technique were used to analyze the data.The results showed that spatial distribution of salinity in each layer of soil presented highly skew distribution.The coefficient of variation for soil salinity belonged to medium degree of variability.Soil salinity in surface layer(0-120 cm)was spatially correlated at a distance between 20 and 28 km,while the spatial correlated distance for subsoil(120-180 cm)was larger(about 34 km).The areas of non-salinity,light salinity,medium salinity,heavy salinity and saline levels were 0,1 508.8,3 614.9,982.6 and 78.6 km~2,respectively.The soil salt concentrations of surface soil in Yinchuan plain were mostly classified at medium and light salinity levels,and presented a trend of soil salt accumulation.The saline soils were mainly distributed in Shizuishan County,Pingluo County,Huinong County in the north of Yinchuan and some areas of south Yinchuan.It is concluded that there is potential of salt accumulation in soils in the arid area and it needs further research for establishing management strategies.
中文关键词	土壤盐分测定 ; 盐渍土 ; 空间分布 ; 地统计学 ; 银川平原
英文关键词	soil salinity measurement salt-affected soil spatial distribution geostatistics Yinchuan plain
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:3659660
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223947
作者单位	1.中国农业大学资源与环境学院, 北京 100094, 中国; 2.宁夏农林科学院资源与环境研究所, 银川, 宁夏 750002, 中国
推荐引用方式 GB/T 7714	张源沛,胡克林,李保国,等. 银川平原土壤盐分及盐渍土的空间分布格局[J]. 中国农业大学,2009,25(7):19-24.
APA	张源沛,胡克林,李保国,周丽娜,罗昀,&朱建宁.(2009).银川平原土壤盐分及盐渍土的空间分布格局.,25(7),19-24.
MLA	张源沛,et al."银川平原土壤盐分及盐渍土的空间分布格局".25.7(2009):19-24.