干旱区生态环境知识资源中心(Arid): 黑河典型荒漠植被区土壤水盐和养分沿降水梯度的变化特征

Arid

	黑河典型荒漠植被区土壤水盐和养分沿降水梯度的变化特征
其他题名	Variations in soil water, salt and nutrients along a precipitation gradient in a typical desert vegetation area across the Heihe River Basin, China
	张晓龙; 周继华; 来利明; 姜联合; 郑元润
来源期刊	应用与环境生物学报
ISSN	1006-687X
出版年	2020
卷号	26 期号:6 页码:1369-1375
中文摘要	为探索极端干旱地区典型荒漠植被区土壤水盐和养分对降水梯度的反应,以黑河流域中下游典型荒漠植被区为研究对象,沿35-209 mm年降水梯度,测定7个样地的土壤水盐和养分含量.结果表明:沿降水梯度变化,土壤含水量、容重、pH、电导率、总碳、总氮、速效磷和速效钾差异性显著 (P <0.05).随着降水量增加,土壤含水量、土壤总碳、土壤总氮大致呈增加变化趋势,最高值出现在209 mm(S7)处,均值分别为8.31%、23.31 mg/g、0.99 mg/g,而土壤容重和土壤速效钾呈下降变化趋势,最低值出现在149-209 mm(S5-S7),均值分别为1.25 g/cm~3和68.40 mg/kg,土壤pH随着降水量的增加呈M形变化趋势,波动幅度较小,而土壤电导率与土壤pH变化趋势相反,波动幅度较大;土壤速效磷随着降水量的增加呈先上升后下降趋势,在69 mm(S3)处最高,均值为10.16 mg/kg.上述研究表明,黑河流域荒漠植被区土壤水盐和养分随降水梯度呈现出一定的差异和规律性,水分条件变化对改善荒漠植被区土壤理化属性有着直接或间接的影响;研究结果可为黑河中下游戈壁荒漠地区植被建设和土壤管理工作提供参考.
英文摘要	Seven sampling sites along a precipitation gradient (35-209 mm/a)across a typical desert vegetation area in an extremely arid area of the Heihe River Basin were selected, and the contents of soil water-salt and nutrient were measured to study the variation and relationship of soil water-salt and nutrient and to determine their responses to the precipitation gradient.The results showed that the soil water content, soil bulk density, soil pH, soil electrical conductivity, soil total C, soil total N, soil available P, and soil available K were significantly different (P <0.05).In addition, soil water content, soil total C, and soil total N were increased with increasing precipitation, along the precipitation gradient and peaking at 209 mm (S7), with mean values were of 8.31%, 23.31 mg/g, and 0.99 mg/g, respectively.However, soil bulk density and soil available K were decreased with increasing precipitation, and with the minimum values were of 1.25 g/cm~3 a nd 6 8.40 m g/kg a round 149-209 mm (S5-S7), respectively.Soil pH formed an M pattern with increasing precipitation, and there was relatively small variation;however, soil electrical conductivity showed the opposite trend, with relatively large variation.Soil available P increased and then decreased with increasing precipitation and peaking at 69 mm (S3), and the mean value was 10.16 mg/kg.Therefore, soil water, salt and nutrients experience some regularities and differences along the precipitation gradient across this typical desert vegetation area, and changes in water conditions had direct or indirect effects on improving the soil physicochemical properties.This study provides a reference for vegetation construction and soil management in the Gobi Desert area across the middle and lower reaches of the Heihe River.
中文关键词	荒漠植被区 ; 土壤水盐 ; 养分 ; 降水梯度 ; 黑河流域
英文关键词	desert vegetation area soil water-salt nutrient precipitation gradient Heihe River Basin
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6883621
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353983
作者单位	张晓龙, 山西财经大学资源环境学院;;中国科学院植物研究所, ;;, 太原;;, ;;北京 030006;;100093.; 周继华, 中国科学院植物研究所, 北京 100093, 中国.; 来利明, 中国科学院植物研究所, 北京 100093, 中国.; 姜联合, 中国科学院植物研究所, 北京 100093, 中国.; 郑元润, 中国科学院植物研究所, 北京 100093, 中国.
推荐引用方式 GB/T 7714	张晓龙,周继华,来利明,等. 黑河典型荒漠植被区土壤水盐和养分沿降水梯度的变化特征[J],2020,26(6):1369-1375.
APA	张晓龙,周继华,来利明,姜联合,&郑元润.(2020).黑河典型荒漠植被区土壤水盐和养分沿降水梯度的变化特征.应用与环境生物学报,26(6),1369-1375.
MLA	张晓龙,et al."黑河典型荒漠植被区土壤水盐和养分沿降水梯度的变化特征".应用与环境生物学报 26.6(2020):1369-1375.