干旱区生态环境知识资源中心(Arid): 黑河中游荒漠绿洲过渡带梭梭(Haloxylon ammodendron)根区土壤含水量分布特征及影响因素

Arid

	黑河中游荒漠绿洲过渡带梭梭(Haloxylon ammodendron)根区土壤含水量分布特征及影响因素
其他题名	Distribution Characteristics and Influencing Factors of Soil Water Content in the Root Zone of Haloxylon ammodendronin Desert-oasis Ecotone in the Middle Reaches of the Heihe River
	张克海; 胡广录; 张钰佳; 方桥
来源期刊	西北林学院学报
ISSN	1001-7461
出版年	2019
卷号	34 期号:4 页码:16-25
中文摘要	梭梭(Haloxylon ammodendron)在荒漠绿洲过渡带的防风固沙过程中发挥着重要作用,而土壤含水量在一定程度上决定着梭梭的生长状况。研究梭梭根区土壤含水量的分布特征及影响因素对进一步探究荒漠绿洲过渡带斑块植被的稳定性具有重要意义。在黑河中游荒漠绿洲过渡带的半固定沙地上于2017年5月下旬和10月中旬选取5株梭梭灌丛,对其根区土壤含水量的分布及影响因素进行研究。结果表明:1)花期土壤含水量在土层深度0~10 cm和80~120 cm较高, 10~40 cm次之,40~80 cm最低;果期土壤含水量则呈现出逐层增大的变化趋势;2)土壤温度影响土壤水分蒸发,温度越高,蒸发越大,导致花期土壤含水量随土壤温度的升高而降低。当温度低于一定范围时,蒸发受到抑制,土壤温度升高,土壤持水能力则随之增强,导致果期土壤含水量随土壤温度的升高而增大;3)土壤有机质含量增大,促使团聚体和胶体形成,土壤吸附水分能力增强,即花期和果期土壤含水量均随土壤有机质含量增加而增加;4)土壤中粗砂含量越少,中砂含量越多,土壤孔隙越小,持水能力越好。因此,花期和果期梭梭根区土壤含水量随粗砂含量的增加而减小,随中砂含量的增加而增大。
英文摘要	Haloxylon ammodendron plays an important role in the process of resisting wind and stabilizing sand in the desert-oasis ecotone,and the soil water content determines the growth of H.ammodendronto some extents.The study on the distribution characteristics and influencing factors of soil water content in rhizosphere soil of H.ammodendronis of great significance to further explore the stability of vegetation in the desert-oasis ecotone.Five similar H.ammodendronshrubs were selected in the semi-fixed sand of the study area in late May and mid-October 2017,and the distribution and influence factors of soil water content in the rhizosphere were studied.The results showed that:1)The soil water content in the flowering period was higher in the vertical range of 0-10 cm and 80-120 cm soil depth,the next in the depth range of 10-40 cm,and the lowest in the range of 40-80 cm soil depth.There was a trend of increasing layer by layer in fruiting stage.2)Soil temperature affected the evaporation of soil moisture.The higher the temperature, the greater the evaporation.Therefore,the soil water content in the flowering period decreased with the increase of soil temperature.When the temperature was lower than a certain range,evaporation was inhibited. The higher the soil temperature,the better the water holding capacity.Therefore,the soil water content increased with the increase of soil temperature.3)The soil organic matter content increased,which promoted agglomerates.With the formation of colloids,the soil’s ability to adsorb water was enhanced,and the soil water content at flowering and fruiting increased with the increase of soil organic matter content.4) The less the coarse sand content in the soil,the higher the medium sand content,the smaller the soil porosity, and the better the ability of water retention.The soil water content in the roots of H.ammodendronat flowering and fruiting decreased with the increase of coarse sand content,and increased with the increase of medium sand content.
中文关键词	梭梭 ; 土壤含水量 ; 土壤有机质 ; 土壤温度 ; 土壤颗粒组成
英文关键词	Haloxylon ammodendron soil water content soil organic matter soil temperature soil particle composition
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6537343
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239604
作者单位	兰州交通大学环境与市政工程学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	张克海,胡广录,张钰佳,等. 黑河中游荒漠绿洲过渡带梭梭(Haloxylon ammodendron)根区土壤含水量分布特征及影响因素[J],2019,34(4):16-25.
APA	张克海,胡广录,张钰佳,&方桥.(2019).黑河中游荒漠绿洲过渡带梭梭(Haloxylon ammodendron)根区土壤含水量分布特征及影响因素.西北林学院学报,34(4),16-25.
MLA	张克海,et al."黑河中游荒漠绿洲过渡带梭梭(Haloxylon ammodendron)根区土壤含水量分布特征及影响因素".西北林学院学报 34.4(2019):16-25.