干旱区生态环境知识资源中心(Arid): 干旱内流区尾闾绿洲土壤积盐的动态特征

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	干旱内流区尾闾绿洲土壤积盐的动态特征
其他题名	Dynamics of Soil Salt Accumulation in Oasis at Lower Reaches of an Inland River Basin
	王玉刚 1; 肖笃宁 2; 李彦1
ISSN	1000-694X
出版年	2009
卷号	29 期号:4 页码:604-610
中文摘要	运用遥感与GIS技术,结合地统计学方法研究了三工河流域下游阜北绿洲近23 a来表层土壤(0～20 cm)盐分动态特征及其主导因素.结果表明:①研究区景观类型间相互转换频繁,区域绿洲化进程的同时,荒漠化也在加重,并且绿洲化进程强于荒漠化;②通过对1982年和2005年土壤盐分的理论模型拟合,符合指数模型,并且,F检验达到极显著水平;③Kriging插值及其与同期的绿洲景观类型图进行叠加运算表明,在自然和人为作用下,区域土壤盐化程度加重,高盐区面积增加,低盐区面积减少,土壤盐分在20 g·kg~(-1)以上的分布面积增加了15.36%,而在5～10 g·kg~(-1)范围减少43.85%;④水库输水灌溉是引发区域地下水位抬升的直接因素,间接导致土壤盐渍化程度的加重.
英文摘要	The dynamics of soil salt content in topsoil (0~20 cm) and its major causes were studied in Fubei region on the oasis at the lower reach of the Sangong river watershed with a combination of methods in geostatistics, GIS, and RS. The results revealed that: ①Transitions between landscape types were fre-quent. Both the processes of oasis development and desertification were being intensified, and the former was faster than the later. ②The spatial variation in soil salinity was best fitted by exponential model in 1982 and 2005, with F-test showing high level of confidence. ③Mapping of soil salinity by Kriging and its com-parison with landscape maps at the same period showed that the area of soil salinization was increased, and the degree of soil salinization was higher in 2005 than in 1982. The area of soil salt content being more than 20 g·kg~(-1) had increased by 15. 36%, but the area of soil salt content within 5~10 g·kg~(-1) had decreased by 43. 85% in 2005 than that in 1982; ④Agricultural irrigation with water from reservoir was the major cause directly resulted in the rise of groundwater table, and then indirectly lead to soil salinization.
中文关键词	绿洲 ; 景观变化 ; 土壤盐渍化 ; 地统计
英文关键词	GIS oasis landscape dynamics soil salinization geostatistics GIS
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING ; AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Remote Sensing ; Agriculture
CSCD记录号	CSCD:3757949
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/2XILL650/224557
作者单位	1.中国科学院新疆生态与地理研究所, 中国科学院绿洲生态与荒漠环境重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国
推荐引用方式 GB/T 7714	王玉刚,肖笃宁,李彦. 干旱内流区尾闾绿洲土壤积盐的动态特征[J]. 中国科学院新疆生态与地理研究所,2009,29(4):604-610.
APA	王玉刚,肖笃宁,&李彦.(2009).干旱内流区尾闾绿洲土壤积盐的动态特征.,29(4),604-610.
MLA	王玉刚,et al."干旱内流区尾闾绿洲土壤积盐的动态特征".29.4(2009):604-610.