Impact of Grassland Reseeding, Herbicide Spraying and Ploughing on Diversity and Abundance of Soil Arthropods.
Impact of Grassland Reseeding, Herbicide Spraying and Ploughing on Diversity and Abundance of Soil Arthropods.
复制标题
草地补播、喷洒除草剂和犁耕对土壤节肢动物多样性和丰度的影响。
DOI：
10.3389/fpls.2016.01200
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发表时间：
2016
影响因子：
5.6
通讯作者：
Murray PJ
中科院分区：
文献类型：
--
作者：
Liu W;Zhang J;Norris SL;Murray PJ
为了确定补播、喷洒除草剂和耕作对土壤动物群落的交互作用，我们进行了草地补播试验，并结合补种前的管理，研究了补播整个过程对土壤动物组成的影响。取样时机和具体处理如下：(1)化学除草剂喷洒前；(2)喷洒后但耕作前；(3)耕作后但补种前；(4)恢复1年后。结果表明，粉虱和弹尾目是土壤动物群落中丰度最高的两个类群，约占土壤动物相对总丰度的96%。除草剂的使用有增加土壤无脊椎动物丰度的趋势。相反，翻耕显著降低了土壤无脊椎动物的丰度，对土壤初级和次级分解者产生了明显的负面影响，这主要是由于螨类(尤其是甲纲)和鞘翅目类群的丰度变化所致。此外，补种还减少了上述种群的个体数量，有利于那些体型和个体体重较大的捕食者。经过1年的恢复，弹尾目动物的丰度恢复到治疗前的水平，而节肢动物和螨类的丰度仍在波动。
In order to determine the interactive effect of reseeding, herbicide spraying and ploughing on soil fauna communities, we conducted a grassland reseeding experiment combined with pre-reseed management to examine how with the whole reseeding process affects soil faunal composition. Sampling occasions and exact treatments were as follows: (1) before chemical herbicide spray; (2) after spray but before ploughing; (3) after ploughing but before reseeding; and (4) after 1 year of recovery. Our results demonstrate that, Acari and Collembola were the two soil fauna taxa with the highest abundance and accounted for around 96% of the relative total abundance among the various managements. Herbicide application tended to increase soil invertebrate abundance. Conversely, subsequent ploughing significantly reduced soil invertebrate abundance and had an obvious negative effect on soil primary and secondary decomposers, which were mainly due to the variations of Acari (especially Oribatida) and Coleoptera group abundance. Moreover, reseeding also reduced the individual number of the groups mentioned above, and favored those predators with a larger body size and individual weight. After 1 year recovery, Collembola abundance recovered to the pre-treatment levels, while with Arthropod and Acari groups were still fluctuating.