砂生槐群落对不同抚育强度的响应

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砂生槐(Sophora moorcroftiana(Benth.)Baker)是雅鲁藏布江中游干旱河谷区植被群落的重要建群种,具有极强的耐瘠薄、抗风沙等生态适应性和防风固沙、保持水土功能,本文以西藏雅鲁藏布江流域的砂生槐作为研究对象,采取不同抚育措施(施肥、平茬0 cm、平茬10 cm、平茬20 cm),观察不同抚育措施下的砂生槐群落的年生长量、群落高度、叶片叶绿素含量。结果表明:(1)不同抚育措施1年内砂生槐群落的生长量之间存在显著性差异,平茬20 cm的群落生长量最大为53.07 cm,施肥组的生长量
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