The pattern of large-scale distribution pattern and distribution pattern of soil worm abundance.

Exploring the geographical distribution pattern and its influence factors on the large scale of species diversity is the focus of biometrics and macro-ecology research, which is of great significance to regional and global biodiversity conservation.
of large-scale distribution of species is currently debated.
Usually, the large-scale distribution pattern of species richness is gradually reduced from tropical to cold zone, the peak value appears near the equator, and the soil animals that conform to this rule have termites and jumpworms, but some soil animals such as beetles, mussels and other large-scale distribution patterns do not follow this distribution law due to differences in climate, soil and vegetation types, i.e. species richness is not in tropical areas near the equator, but in temperated areas.
the large-scale distribution pattern of soil worm abundance, which plays an important role in improving the physical properties of soil, promoting carbon-nitrogen conversion and maintaining ecosystem health, follow this law? What are the main ecological factors driving its distribution patterns?Song Dagang, Ph.D. student of the Ecological Process and Biodiversity Conservation Research Group of Chengdu Institute of Biological Sciences of the Chinese Academy of Sciences, under the guidance of his tutor Pan Kaiwen, used the soil worm large-scale distribution data, combined with latitude, climate and vegetation type, to explore the large-scale distribution pattern and its influence factors of soil worm multi-degree and abundance.
results show that the soil worm polysexuality and latitude are distributed in a single-peak pattern, with the soil worm polysexual being the highest in the latitude range of 30-55 degrees, the worm richness index is significantly related to latitude, and the latitude gradient explains the variability of the 65.9% richness index.
the single-peak distribution pattern, which increased and decreased with the average annual temperature, was the highest in the region with an average annual temperature of 8 degrees C, and there was no significant correlation with the average precipitation.
tempered conifer forests have the highest degrees of pest polymaths, the second lowest in tropical rainforests, and the lowest in deserts and polar regions.
the highest abundance of the genus broad-leaved forest, followed by tropical rainforests, tempered conifers, grasslands, anitic ecosystems, deserts and polar regions.
study found that strengthening the relationship between climate and environmental factors and mitigating insects could help to find ways to mitigate the negative effects of global change, and that using them as a monitoring indicator of environmental change and soil quality change could contribute to environmental pollution control and soil fertility.
, the study also found the importance of breaking through molecular biology and genetic engineering methods to identify worms in bulk.
are among the most abundant in the animal world, living in animals, plants, or freely in soil, fresh water and seawater environments.
Soil worms are distributed in all terrestrial ecosystems, including plant parasites, predatory worms, omnivorous worms, food bacterial worms, fungal-eating worms, etc., which play an important role in improving the physical and chemical properties of soil, promoting carbon and nitrogen cycles, maintaining ecosystem health and ensuring food security.
the study reveals the large-scale distribution pattern of soil worms and their drivers, which contribute to ecological protection, restoration and ecosystem management.
the study was funded by the National Natural Science Foundation of China (No.31370632) and the National Key Research and Development Program (No.2016YFC0502101).
was recently published online in the international journal Appleed Soil Ecology (2017) under the title Large-scale patterns of distribution and diversity of terrestrial nematodes.
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