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黄土高原水蚀风蚀交错带不同植被类型下土壤水分动态特征
Authors
傅子洹 [1,2]
安芷生[1]
王云强[1]
Publication date
1 June 2015
Publisher
Abstract
为掌握黄土高原水蚀风蚀交错带不同植被类型下 0 ~ 500 cm 土壤含水量的时空变化 特征及其剖面变异规律,采用定位观测和经典统计学相结合的方法,本文研究了陕西神木六 道沟小流域老爷满渠 4 种不同植被类型(杏树、杨树、沙蒿以及柠条)下的土壤水分状况。 结果表明:在气象、地形、地貌、土壤等立地条件基本一致的情况下,同种植被下土壤含水 量的变化趋势具有较高一致性,表层(0 ~ 40 cm)土壤含水量在雨季显著大于旱季,并且上 层土壤水分(0 ~ 40 cm)的变异程度大于下层(40 ~ 500 cm);不同植被类型间,杏树地土 壤含水量在垂向的变化趋势最稳定,杨树地和沙蒿地次之,柠条地最剧烈。不同植被类型下 的土壤水分动态特征与剖面分布具有明显差异。</p
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Last time updated on 03/02/2019