刘晶,王雪峰,常亮,高梅香,孙新,吴东辉

• 1:中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室
• 2:中国科学院大学
• 3:哈尔滨师范大学地理科学学院
• 4:黑龙江省普通高等学校地理环境遥感监测重点实验室

摘要(Abstract)：

土壤跳虫是土壤中重要的无脊椎动物类群之一,对其种群生存策略的认识有利于理解陆地生态系统的演替过程及区域生物多样性维持机制。温度适应是跳虫重要的生存策略之一。在对三江平原野外土壤动物群落调查过程中,发现真土生棘跳(Protaphorura bicampata(Gisin,1956))是农田及湿地中的重要种群之一,具有区域代表性。文章研究了该种棘跳在不同温度下的生长及发育情况,从其最适生长、发育温度的角度探讨三江平原温度对区域生物多样性维持及土壤动物群落形成的影响机制。结果显示,棘跳的最适生长及繁殖温度均在20℃以上,低于15℃其发育停滞、繁殖终止。研究结果说明,相对极地或高纬度及三江平原的抗低温土壤跳虫(可在-30℃下存活)而言,研究对象—棘跳并非代表性的冬季活跃的跳虫种类,其区域优势地位的建立是夏季生存竞争的结果。推测其对冬季低温的抵抗主要得益于冬眠,垂直迁移可能是其越冬的行为基础。

关键词(KeyWords)： 土壤跳虫;低温适应;最适温度;湿地生态系统

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(31370532,41430857,41201245,41471037)

作者(Author): 刘晶,王雪峰,常亮,高梅香,孙新,吴东辉

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