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咸水滴灌对沙漠公路防护林土壤环境的影响
Authors
刘尚
张建国
+10 more
徐新文
李生宇
杜文意
王永昌
许波
谷峰
邱永志
闫增辉
雷加强
靳正忠
Publication date
1 January 2008
Publisher
Abstract
为了研究高矿化度水滴灌对极端干旱区防护林土壤环境的影响,为塔里木沙漠公路防护林生态工程的可持续利用和维护管理提供理论依据。该文以塔克拉玛干沙漠腹地4.0~4.8 g/L的高矿化度地下水滴灌下的防护林为例,分析了咸水滴灌前后0~30 cm各层风沙土全N、全P、有机质、全盐、离子组成和微生物的变化。结果表明:高矿化度咸水滴灌下塔里木沙漠公路防护林的土壤环境逐渐得到改善。防护林0~5 cm、5~15 cm和1~30 cm 3个层次的含水量、全N、全P、全K、全盐含量、离子组成和微生物数量与流沙地存在很大差异,且与灌溉年限有直接关系;其中0~5 cm层次变化最为明显,5~15 cm次之,15~30 cm变化最小
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Last time updated on 29/11/2016