RESEARCH NEWS

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  Nitrogen deposition promote tree growth and drive proportionally more photosynthate allocation into wood than leaves in temperate and boreal forests

  The research group led by Prof. FANG Yunting from the Institute of Applied Ecology of the Chinese Academy of Sciences conducted stimulated N deposition experiments in the larch forest and the mixed forest in the Qingyuan Forest, National Observation and Research Station. They monitored the responses of tree growth and litterfall production during 2014-2021 to detect N effects on tree growth and C allocation. Besides, they also did meta-analysis on tree growth and C allocation data from other stimulated N deposition experiments in temperate and boreal forests worldwide to examine if there exist general effects of N deposition.

  Nov 21, 2022
• Vehicle Exhaust Emission and Ammonia Slip are Main Sources of Atmospheric Ammonia and Ammonium in Cities of North China

  Researchers Abubakari Said Mgelwa and FANG Yunting from the Stable Isotope Ecology Group of the Institute of Applied Ecology of the Chinese Academy of Sciences, and Professor ZHANG Yanlin's team at Nanjing University of Information Science & Technology, recently published a research in which they collected PM2.5 samples in Beijing, Tianjin, Baoding, Shijiazhuang, Tangshan and Gucheng during the winter of 2018 and measured ammonium concentrations and natural 15N abundance of ammonium (δ15N-NH4+) in PM2.5 particulates.

  Nov 14, 2022
• Scale Effect Matters When Investigating Spatial Heterogeneity and Driving Factors of Urban Flooding

  Urban flooding is a natural disastrous event which takes place in cities when short-term rainstorm or continuous heavy rainfall exceeds the drainage capacity of a city. Urban floods frequently occur worldwide. In China, it causes major economic losses every year, especially in megacities such as Beijing, Shanghai and Guangzhou.

  Oct 31, 2022
• Researchs Explain How Grafting can Reduce Root-to-Shoot Cadmium Translocation and Produce Inheritable Low-Cadmium Traits

  The heavy metal Cadmium (Cd) can migrate and accumulate in soil-plant system, and threaten food safety and the health of people. It is thus important to develop pollution control techniques for Cd-contaminated soils and to explore the mechanism affecting cadmium absorption, transportation and accumulation in crops.

  Oct 31, 2022
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  Revealing the Quantitative Relationship between Urban Atmospheric Particulate Matter Concentration and Natural and Human Factors in Central Heating Areas

  Researchers from the Institute of Applied Ecology (IAE) of the Chinese Academy of Sciences (CAS) used wearable equipment to monitor the concentrations of UPM (PM1, PM2.5, and PM10) in selected typical areas of Shenyang City, analyzed the contributions and marginal effects of multiple influences on UPM by random forest model combined with land use and point-of-interest data, in both heating and non-heating seasons.

  Oct 21, 2022
• Seeds are Most Difficult to be Buried by Wind on a Substrate Consisting Mainly of Medium-sized Particles, Researchers Say

  In view of this, Prof. LIU Zhimin and his doctoral student ZONG Lu conducted a wind tunnel experiment and examined the impacts of wind speed, type of substratum (four pure substrates with particle sizes ranging from 89 μm to 25000 μm and seven mixtures of them) and diaspore traits on seed burial.

  Oct 08, 2022
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  Researchers Discover New Dehalogenimonas sp. Strain Capable of Driving Dechlorination of Diclofenac

  Research scientist YAN Jun and associate researcher LI Xiuying of the Environmental Microbial Ecology Group at the Institute of Applied Ecology (IAE) of the Chinese Academy of Sciences (CAS) established an anaerobic microbial enrichment culture using river sediments polluted by Diclofenac.

  Sep 14, 2022
• Fungi and Insect Herbivores Affect Herb Diversity Depending on Species Traits of the Herbs and Neighbouring Tree Composition

  Research scientist WANG Xugao and Dr. JIA Shihong from the Natural Forest Ecology Group of the Institute of Applied Ecology (IAE) of the Chinese Academy of Sciences (CAS) recently published their new findings on forest herb diversity maintenance.

  Sep 14, 2022
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  New Study Uncovers the Regulatory Effects of El Ni#n;o–Southern Oscillation (ENSO) on Temperate Forests’ Seed and Leaf Fall

  To reveal how ENSO affects the temporal variation of species-level seed and leaf fall, researchers from Institute of Applied Ecology Chinese Academy of Sciences estimated the relationships among ENSO, local climate, and litterfall, using a 12-year data set of seed and leaf fall in a temperate forest of northeast China, with corresponding local climatic data (relative humidity and precipitation) and two ENSO indices (ENSO12 and ENSO34).

  Sep 13, 2022
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  Variable Responses of Seed Traits to Extreme Drought Do Not Preclude Their Strong Relationships with Drought Sensitivity

  To address this knowledge gap, a research team from Institute of Applied Ecology of Chinese Academy of Sciences reduced growing season precipitation amount for four years across five grasslands of North China and assessed the responses of seed traits and grassland productivity to extreme drought. Surprisingly, the researchers found that there are variable effects of extreme drought on community seed trait means and diversity over space and time. However, the researchers observed a negative relationship between drought-induced reductions in grassland productivity and one key seed trait, mean seed-coat thickness.

  Sep 01, 2022