Role of nematodes in soil health and their use as indicators.
Role of nematodes in soil health and their use as indicators.
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作者：
D. Neher
线虫群落的组成（植物寄生和自由生活）可用作土壤健康或状况的生物指标，因为组成与土壤中两个关键的生态过程-氮循环和分解密切相关。成熟度和营养多样性指数比营养组的丰度、比例或比率更能承受统计上的严格性。成熟度指数反映了各种土地管理做法，主要是根据推断的家庭生活史特点。相似性指数可能比多样性指数更有用，因为它们反映了分类单元的组成。改进现有的指数或开发替代指数，通过更好地了解关键类群的生物学，可以提高线虫作为生物指示剂的效用。
The composition of nematode communities (plant-parasitic and free-living) may be used as bioindicators of soil health or condition because composition correlates well with nitrogen cycling and decomposition, two critical ecological processes in soil. Maturity and trophic diversity indices withstand statistical rigor better than do abundances, proportions, or ratios of trophic groups. Maturity indices respond to a variety of land-management practices, based largely on inferred life history characteristics of families. Similarity indices may be more useful than diversity indices because they reflect taxon composition. Improving existing indices or developing alternative indices refined by a greater understanding of the biology of key taxa may enhance the utility of nematodes as bioindicators.