Spatial variation in soil compaction, and the burrowing activity of the earthworm Aporrectodea caliginosa
Spatial variation in soil compaction, and the burrowing activity of the earthworm Aporrectodea caliginosa
复制标题
土壤压实的空间变化以及蚯蚓 Aporectodea caliginosa 的穴居活动
DOI：
10.1007/s00374-003-0703-5
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发表时间：
2004
影响因子：
6.5
通讯作者：
Rodger P. White
中科院分区：
文献类型：
--
作者：
Robert J. Stovold;W. R. Whalley;P. Harris;Rodger P. White
通过盆栽实验研究了土壤压实对蚯蚓（Aporectodea caliginosa nocturna）活动的影响。包装盆时使用了两种压实压力；松散土的压实压力为 96 kPa，密实土的压实压力为 386 kPa。还使用了包含松散土壤和压实土壤的“分体盆”。在分体盆中，周围的洞穴（靠近盆壁的那些）通常在松散的一半中比在紧凑的一半中更长。这意味着蚯蚓更喜欢松散的土壤。一个重要的发现是，分体盆中的外围洞穴比均匀填充松散或致密土壤的盆中的洞穴更长。我们的数据表明，分体盆活动的增加是对土壤压实空间变化的反应。在分体盆中，蚯蚓倾向于避开紧凑的一半，我们讨论了分体盆中的回避反应如何增加了这些盆中外围洞穴的比例。
The effects of soil compaction on earthworm ( Aporrectodea caliginosa nocturna) activity were studied using pot experiments. Two compaction pressures were used when packing the pots; loose soil was packed by applying a pressure of 96 kPa, and compact soil was packed using a compaction pressure of 386 kPa. “Split pots” which contained both loose and compact soil were also used. In split pots peripheral burrows (those next to the pot wall), were generally longer in the loose half of the pot than they were in the compact half. This implies that earthworms preferred the loose soil. An important finding was that peripheral burrows in the split pots were longer than those made in pots packed uniformly with either loose or compact soil. Our data suggest that the increase in activity in split pots is a response to spatial variation in soil compaction. In the split pots the earthworms tended to avoid the compact half, and we discuss how the avoidance response in the split pots may have increased the proportion of burrows in these pots that were peripheral.