干旱区生态环境知识资源中心(Arid): 沙漠地区咸水滴灌林地盐结皮层化学特征

Arid

	沙漠地区咸水滴灌林地盐结皮层化学特征
其他题名	Chemical Properties of the Salt Crust Layer in Shelterbelts Under Drip Irrigation with Saline Water in a Mobile Desert
	张建国; 徐新文; 雷加强; 王海峰; 李生宇
ISSN	1001-4675
出版年	2009
卷号	26 期号:2 页码:255-260
中文摘要	盐结皮是成水滴灌条件下塔里木沙漠公路防护林土壤表层形成的一种特殊层结.对塔克拉玛干沙漠腹地不同灌溉年限防护林土壤盐结皮层的化学特征分析表明:①有机质含量随着灌溉年限的增加而增加,但增加趋势逐渐减弱;②全N、全P均随着灌溉年限的增加而增加,全K先增加后降低;③全盐量远高于流沙地,但随着灌溉年限的增加而逐渐减少;④与流沙地相比,盐结皮层各离子含量有不同程度的增加,SO_4~(-2),Mg~(2+),Na~+,Cl~-,K~+,Ca~(2+)含量随着灌溉年限的增加而逐渐减少,CO_3~(2-)含量极微且基本没有变化,但HCO_3~-含量却随着灌溉年限的增加而逐渐增加;⑤pH值均呈碱性,随着灌溉年限的增加而逐渐降低.
英文摘要	Salt crust is a unique layer that forms on the soil surface under drip irrigation with saline water in the shelterbelts along the Trim Desert Highway.In this study,the chemical properties of salt crust layers in shelterbelts with different ages along the Trim Desert Highway in the hinterland of the Taklimakan Desert were analyzed.The results of this study were as follows:(1) The levels of organic matter in the salt crust layer increased as the age of the shelterbelt and the drip irrigation years increased due to the accumulation and decomposition of litter,but over time the increase trend gradually decreased;(2) The total N and total P increased as the age of the shelterbelt and the drip irrigation years increased,but the total K increased initially and then decreased;(3) The total salt content in the salt crust layer was much higher than in mobile sand,but it gradually decreased as the age of the shelterbelt and drip irrigation years increased;(4) The contents of all ions were higher when compared with the contents in mobile sand,but the SO_4~(2-),Mg~(2+),Na~+,Cl~-,K~+ and Ca~(2+) levels gradually decreased as the shelterbelt ages and drip irrigation years increased.In addition,the CO_3~(2-) level changed only slightly,while the HCO_~- concentration gradually increased as the shelterbelt ages and drip irrigation years increased;(5) The pH values of the salt crust layer were all alkaline and gradually decreased as the shelterbelt ages and drip irrigation years increased.Indeed,even the pH value of a salt crust layer in a shelterbelt that was irrigated for 11 years was lower than that of mobile sand.
中文关键词	咸水滴灌 ; 防护林 ; 盐结皮层 ; 流动沙漠 ; 化学特征 ; 塔克拉玛干沙漠
英文关键词	drip irrigation with saline water shelterbelt salt crust layer drifting desert chemical property the Taklimakan Desert
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:3657527
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223601
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	张建国,徐新文,雷加强,等. 沙漠地区咸水滴灌林地盐结皮层化学特征[J]. 中国科学院新疆生态与地理研究所,2009,26(2):255-260.
APA	张建国,徐新文,雷加强,王海峰,&李生宇.(2009).沙漠地区咸水滴灌林地盐结皮层化学特征.,26(2),255-260.
MLA	张建国,et al."沙漠地区咸水滴灌林地盐结皮层化学特征".26.2(2009):255-260.