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塔里木河下游地区新生林地滴灌后土壤水盐再分布特征
Authors
叶茂
徐海量
王春芳
赵新风
Publication date
1 January 2009
Publisher
Abstract
以塔里木河下游农二师35团8连绿洲-荒漠交界处滴灌条件下的新生林土壤为研究对象,对滴灌结束24 h后的土壤水分、盐分分布特征进行了分析。结果显示:水平方向上,各点处纵剖面土壤含水率随着距滴头距离的增加逐渐下降,至距滴头75 cm处达最低值;而各点处土壤纵剖面含盐量则随着距滴头距离的增加逐渐上升,至距滴头75cm处达到峰值。垂直方向上,无论水分还是盐分,在20—40 cm土层含量较高,至中下层趋于下降。水平方向上,随着距滴头距离的增加,滴头处土壤剖面含水率与其他点处土壤剖面含水率的相关性依次递减,距滴头75 cm处土壤剖面含盐量与其他点处土壤剖面含盐量的相关性依次递增;垂直方向上,与20—40 cm土层含水率相关性较强的是0—20 cm土层,在α=0.01水平上呈显著相关,其次是40—60 cm土层,在α=0.05水平上呈显著相关
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016