土壤生物多样性对植物利用营养物质和水分的影响

Effects of soil biodiversity on nutrients and water used by plants

土壤生物多样性影响土壤营养物质和水等自然资源的有效利用是农业生态系统的重要功能。有证据表明土壤微生物多样性可提高土壤营养物质和水的利用率。土壤动物对土壤营养物质和水的有效利用也产生了明显的影响,它主要是通过促进营养物质的转化和改善土壤水渗透率而间接实现的。从已有文献的报道来看,单从某一个方面来研究土壤生物多样性对土壤营养物质和水的有效利用的影响并不能全面地反应它们之间相互作用的规律。因此未来的研究应当把土壤生物多样性、土壤营养物质和水的供给与植物生物多样性、植物营养物质和水的利用率结合起来,这样才有可能从理论上对土壤生物多样性与营养物质和水的利用之间的关系有更加深刻的认识并运用到实践中。

The effects of soil biodiversity on nutrients and water-use efficiencies by plants are important ecological functions in agroecosystems.Many studies suggest that soil microorganism biodiversity positively contributes to nutrients and,possibly,water-use efficiency.Soil fauna also effect on nutrients and water-use efficiencies,but they may be indirect effects that influence mineralization of nutrients and permeability of soil water.Effects of soil biodiversity on nutrients and water-use efficiencies were studied based on soil microorganisms,or soil fauna,or plant in most experiments,and the results may be unilateral.Therefore,it should be combine the investigation of soil biodiversity and soil nutrients and water supply with the investigation of plant biodiversity and nutrients and water-use efficiencies in future.So we will may be further apprehend the relationships of soil biodiversity and nutrients and water-use efficiencies on theory and improve agroecosystem nutrients and water-use efficiencies in practice.