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According to the UN's Intergovernmental Panel on Climate Change (IPCC), the pattern of global precipitation has changed.
changes in precipitation patterns in tropical areas of South Asia are mainly reflected in the decrease of the number of precipitations in the dry season and the frequent frequency of heavy rainfall during the rainy season.
of precipitation pattern will affect the ecological process and function of terrestrial ecosystem.
, the impact of changes in precipitation patterns on tropical forest ecosystems in South Asia is not clear.
Zhao Wei, Ph.D. student at the Center for Ecological and Environmental Sciences of the South China Botanical Garden of the Chinese Academy of Sciences, under the guidance of his mentor Jane Shuguang and researcher Shen Weijun, relied on the heshan field precipitation control experimental platform to simulate the dry and wet seasons of the dry and wet precipitation patterns.
, taking soil microorganisms as the research object, this paper discusses the response of soil microbiome structure and function to the seasonal distribution changes of precipitation, and deepens the understanding of the response of soil microorganisms to changes in precipitation patterns.
water content was reduced by 17-24% during the dry season, excepting 67% of under-forest water treatment.
, the precipitation change of this intensity had no significant effect on the structure of soil microbiome.
But at the gate classification level, the dry-season precipitation treatment of 67% significantly increased the relative abundance of the rare bacterial species (Gemmatimonadetes, Armatimonadetes and Bederiodetes) and the fungal dominant species Basidiomycota, reducing the relative abundance of the fungal dominant species Ascomycota.
After 2 years of field precipitation control experiments, the results show that the change of precipitation intensity has no significant effect on soil nutrients, microbiome structure and enzyme activity, but significantly affects the relative abundance of some rare species in bacterial community and the dominant species in fungal community.
of the study have been published in the international mainstream journal Journal of Soilology and Fertility of Soil.
the research was funded by key projects of the National Natural Science Foundation of China.
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