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不同海拔梯度高寒草地地下生物量与环境因子的关系
Authors
公延明
尹伟
+4 more
李凯辉
王万林
胡玉昆
高国刚
Publication date
1 January 2008
Publisher
Abstract
以新疆天山南坡的巴音布鲁克高寒草地为对象,研究了不同海拔梯度高寒草地地下生物量的变化及其与环境因子的关系.结果表明:随着海拔的升高,高寒草原、高寒草原化草甸和高寒草甸的地下生物量逐渐增大,二者呈极显著正相关(P<0.01).地下生物量从表层至底层逐渐递减,呈"T"形分布.高寒草原、高寒草原化草甸和高寒草甸0~10cm土层的地下生物量分别占总地下生物量的68.1%、84.1%和86.7%.地下生物量与大气温度呈极显著负相关,与相对湿度和土壤含水量呈极显著正相关(P<0.01),而与有机质、速效氮和pH等无显著相关
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Last time updated on 29/11/2016