干旱区生态环境知识资源中心(Arid): 敦煌绿洲天然胡杨林下土壤水盐空间变化特征研究

Arid

	敦煌绿洲天然胡杨林下土壤水盐空间变化特征研究
其他题名	The Spatial Variations of Soil Water and Saline Content Under Populus Euphratica in Dunhuang Oasis
	张克新; 刘普幸; 霍华丽; 张锐; 曹立国; 安建科
来源期刊	土壤通报
ISSN	0564-3945
出版年	2012
卷号	43 期号:3 页码:563-570
中文摘要	利用经典统计学与地统计学相结合的方法对甘肃敦煌绿洲天然胡杨林下土壤水盐的空间变化特征进行研究。结果表明:敦煌绿洲天然胡杨林土壤含水量变化趋势总体表现为随深度增加而增加的趋势;0~60 cm土壤含水量变化程度较大,再向下各层土壤含水量变化趋于平缓。土壤全盐含量变化具有表浅层较高,平均含盐量达9.24%;从40~60 cm以下各层土壤全盐含量的变化均随深度增加而逐渐减少。土壤水盐含量的变异性在不同土壤层有较明显的差异,土壤含水量的变异性均属于中强度变异,土层越深,其含水量变化程度越小;而土壤全盐含量的变异均属于中度变异性,其变异程度由表层向下各不相同。采用ArcGIS的反距离加权(Inverse Distance Weighted)插值法分析表明,研究区土壤水盐含量存在明显的空间差异和较强的相似性,即各层土壤水盐均表现为西南低、东北高的空间分布规律。
英文摘要	The spatial variability of soil water and salt content is remarkable.The traditional statistics and semi-variance analysis of geostatistics were used to study the spatial variability of the soil water and salt content under the natural populus euphratica forests in the west lake nature reserve of Dunhuang oasis.The results showed that there was about 15-20 cm dry sand layers in most parts of land,which made the surface soil water content at the lowest level of 0.8%-4.49%.The soil water content increased with soil depth.The soil water content changed more greatly in 0-60 cm layer than the deeper layers.The soil saline content was higher in the surface and averaged 9.24%.and reduced with soil depth from 40cm to 120cm.The variation of the soil water and salt contents changed evidently with soil depth.Water content changed in a medium-intensity way,and its variation range was getting smaller in deeper soil layers.While soil total saline content variance was medium and its intensity was different between surface and deep layers.Using the ArcGIS(Inverse Distance Weighted,IDW) interpolation method analysis,the soil water and saline content of studied area possessed obvious spatial differences and strong comparability.Both water and saline content in each layer exhibited the same spatial pattern of being lower in southwest and higher in northeast.
中文关键词	敦煌绿洲 ; 胡杨林 ; 土壤水盐 ; 空间变化
英文关键词	Dunhuang oasis Populus euphratica Soil water and saline content Spatial variability
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:4544914
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228664
作者单位	西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	张克新,刘普幸,霍华丽,等. 敦煌绿洲天然胡杨林下土壤水盐空间变化特征研究[J]. 西北师范大学,2012,43(3):563-570.
APA	张克新,刘普幸,霍华丽,张锐,曹立国,&安建科.(2012).敦煌绿洲天然胡杨林下土壤水盐空间变化特征研究.土壤通报,43(3),563-570.
MLA	张克新,et al."敦煌绿洲天然胡杨林下土壤水盐空间变化特征研究".土壤通报 43.3(2012):563-570.