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新疆维吾尔自治区策勒县绿洲一沙漠过渡带小气候特征
Authors
何志辉
庞营军
+4 more
曾凡江
李生宇
毛东雷
雷加强
Publication date
2 October 2011
Publisher
Abstract
利用HOBO小气候观测仪,在2010年7月23日至8月24日对新疆策勒绿洲—沙漠过渡带的柽柳群落、柽柳—骆驼刺—花花柴群落、骆驼刺群落3个典型天然植物群落的风速、气温、空气相对湿度、光合有效辐射进行了同步观测,分析了它们的小气候特征的差异,初步探讨了产生这些差异的原因。结果表明,策勒绿洲—沙漠过渡带的植被具有独特的小气候作用,植被覆盖度越大,风速越小,气温越低,相对湿度越高。相比植被覆盖度仅3%的柽柳群落,柽柳—骆驼刺—花花柴群落(覆盖度27%)和骆驼刺群落(覆 盖度67%)在观测期内0.5,1,2,4,8和10m处风速平均减小了32%,47%,近地表0.5m风速减少的最多,分别为57%,87%;2m处气温的平均值分别减少了0.32,1.02℃;2m 处空气相对湿度的平均值分别 增加2.33%,7.67%;策勒绿洲—沙漠过渡带柽柳群落、柽柳—骆驼刺—花花柴群落和骆驼刺群落的光合有效辐射差异不明显;阴天和沙尘暴天气光合有效辐射比晴天分别减少40%,60%
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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