Effect of Fertilizer on the Biodiversity of Microcosms
The identities and natural histories of these microscopic flora and fauna and many of the larger, visible soil fauna are the least-known biota in terrestrial ecosystems. However, new evidence is rapidly revealing the major contributions of soil organisms to the maintenance of life on Earth, opening a new frontier for exploration and a rising concern about the loss of soil biodiversity with increasing degradation of the soil habitat locally and globally.
Soil faunal communities are critical for ecosystem functionality, with respect to direct and indirect interactions with plants, nutrient, and organic matter cycling. The composition and diversity of soil fauna are typically explained by the top-down effects of predators and the bottom-up effects of resource availability. Soil fauna have a strong association with soil nutrient availability and are sensitive to changes in the root and soil physicochemical environments, which may be affected by organic and inorganic fertilizers.
In conclusion, organic fertilizer can help to shape the microbial composition and recruit beneficial bacteria into the rhizosphere of tea, leading to improved tea quality and reduced heavy metals content in rhizosphere soil and tea leaves.The sustainability of agricultural systems is an important global issue (Xu HQ, Xiao RL, 2010). This has resulted in the potential benefits of organic fertilizers application have being highlighted. Organic fertilizers are derived from natural sources (e.g., livestock and poultry excreta, plant residues, biogas residue, and agricultural by-products), and their usage can have a positive impact on pollution.
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