干旱区生态环境知识资源中心(Arid): 黄土丘陵区柠条坡地水分空间异质性及其主控因素

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	黄土丘陵区柠条坡地水分空间异质性及其主控因素
其他题名	Spatial heterogeneity of soil moisture on slopes of Caragana korshinskii Kom.plantations and its main controlling factors in loess hilly region
	张星星; 刘小芳; 赵勇钢; 杜雨佳; 贾佳瑜; 任泽莹
来源期刊	中国水土保持科学
ISSN	2096-2673
出版年	2020
卷号	18 期号:6
中文摘要	柠条是干旱半干旱区植被建设的典型灌木,对于生态恢复和土壤侵蚀控制有重要作用。以黄土丘陵区带状种植柠条坡地为对象,研究不同种植年限(15、25和3 5年,荒草地为对照)、坡位和灌草带(柠条带和间隔荒草带)条件下0 ~ 100 cm土层水分异质性,并应用冗余分析方法分析其主控环境因子。结果表明:研究区坡面土壤含水量介于3.3% ~ 21.3%之间,属中等变异程度。随着柠条种植年限的增加,土壤含水量和变异性均逐渐变低。坡位对土壤水分有显著(P <0.05)影响,表现为坡下>坡顶>坡中>坡上>坡肩。柠条种植年限增加降低柠条带与间隔荒草带的土壤水分差值,并且在坡位上表现为坡顶为负值,其他坡位均为正值。冗余分析和方差分解分析结果表明:年限和海拔是影响坡面土壤水分异质性的主控因素,坡位次之,坡度、盖度和条带也有影响;年限、海拔和坡位对土壤水分的解释量分别为1.9%、6.1%和3.0%,各环境因子对土壤含水量的总解释量达到了74.4%。总体来看,黄土丘陵区坡地柠条种植减少土壤水分含量并降低其异质性。在区域植被恢复过程中,需要重视柠条种植年限与地形要素的协同作用。
英文摘要	[Background]The typical shrub species Caragana korshinskii Kom.is widely planted in the vegetation construction,and plays an important role in ecological restoration and soil erosion control in the arid and semi-arid area.[Methods]Four landscape transects including 15-,25-,and 35-year-old C.korshinskii Kom.plantations with shrub belt and grass belt,and natural grassland (as control)were selected in the loess hilly region.Heterogeneity of soil moisture content at 0-100 cm depths and its main environmental impact factors were analyzed using redundant analysis.[Results] The soil moisture content on the slope of the study area ranged from 3.3% to 21.3%,showing a moderate variation.With increasing plantation years of C.korshinskii Kom.,the values and variability of soil moisture content gradually decreased.The slope positions also had significant effects on soil moisture content,which showed an order of lower-slope >top-slope >mid-slope >upper-slope >shoulder-slope.With the increase of the plantation years of C.korshinskii Kom.,the differences of soil moisture content between shrub belt and grass belt decreased,and showed positive values at all slope positions except for the top-slope position.Redundant analysis and variance partitioning analysis showed that plantation age and altitude were the main factors affecting soil moisture heterogeneity,followed by slope position,slope,coverage and belt.The explanation variances of soil moisture content by plantation age,altitude,and slope position were 1.9%,6.1%,and 3.0%,respectively,and the integrated explanation variance by all environmental factors reached 74.4%.[Conclusions]Overall,the plantation of C.korshinskii Kom.in the loess hilly region reduced soil moisture content and its heterogeneity.Therefore,the synergy effects between the plantation ages of C.korshinskii Kom.and topographic factors should be considered for the distribution patterns of soil moisture content during regional vegetation restoration.
中文关键词	柠条 ; 坡位 ; 土壤水分 ; 空间异质性 ; 黄土丘陵区
英文关键词	Caragana korshinskii Kom. slope position soil moisture content spatial heterogeneity loess hilly region
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6880761
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354116
作者单位	张星星, 山西师范大学生命科学学院, 临汾, 山西 041000, 中国. 刘小芳, 山西师范大学生命科学学院, 临汾, 山西 041000, 中国. 赵勇钢, 山西师范大学生命科学学院, 临汾, 山西 041000, 中国. 杜雨佳, 山西师范大学生命科学学院, 临汾, 山西 041000, 中国. 贾佳瑜, 山西师范大学生命科学学院, 临汾, 山西 041000, 中国. 任泽莹, 山西师范大学生命科学学院, 临汾, 山西 041000, 中国.
推荐引用方式 GB/T 7714	张星星,刘小芳,赵勇钢,等. 黄土丘陵区柠条坡地水分空间异质性及其主控因素[J],2020,18(6).
APA	张星星,刘小芳,赵勇钢,杜雨佳,贾佳瑜,&任泽莹.(2020).黄土丘陵区柠条坡地水分空间异质性及其主控因素.中国水土保持科学,18(6).
MLA	张星星,et al."黄土丘陵区柠条坡地水分空间异质性及其主控因素".中国水土保持科学 18.6(2020).