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草业学报  2010 

三峡库区澎溪河消落区草本植物的分布与分解

, PP. 146-152

Keywords: 三峡,消落区,草本植物,分解速率

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Abstract:

采用随机多次小样方对三峡库区澎溪河消落区草本植物群落进行了调查,并应用分解网袋法对消落区草本植物分解速率进行了研究。结果表明,消落区草本植物覆盖度为50%~90%;在分解试验进行的94d中,草本植物分解速率为0.073~0.081g/d,平均0.070g/d,干物质流失率为78.35%~89.88%,平均为82.49%;试验期间共采集到底栖动物21种,分属于9目、10科,20属。第2,6,11,17,94天栖息密度均值依次为27,80,37,114,300个/m2,生物量平均值依次为0.2992,0.3078,0.0657,0.3154,0.2257g/m2。

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