RESEARCH NEWS

• Tree Growth Response to Soil and Neighbors Depends on Size Classes and Canopy Types

  In view of this, Dr. REN Jing, Dr. FANG Shuai, and Dr. WANG Xugao from the Institute of Applied Ecology of the Chinese Academy of Sciences, cooperating with Dr. Claire Fortunel from the Institute de Recherche pour le Développement (IRD), collected tree census data over 15 years for 42 temperate tree species with spatially-explicit soil and neighborhood crowding information in a temperate forest in northeastern China. They employed a hierarchical Bayesian model to quantify the role of soil nutrients and neighborhood crowding in determining the growth of tree species among different size classes and canopy types, and evaluate how functional traits mediate tree growth response to these drivers.

  Jan 11, 2023
• Light, Conspecific Density and Soil Fungi had differential effects on Seedling Growth of Temperate Tree Species

  Tree regeneration play an important role in affecting community dynamics and future forest structure and functioning. Seedling growth, as the key part of tree regeneration, is strikingly influenced by multiple abiotic and biotic factors, e.g., light availability, conspecific density and soil fungi. However, the interactive effects of these factors on seedling growth are poorly understood.

  Jan 03, 2023
• Unmanned Aerial Vehicle with Multi-sensors Used to Characterize Vertical Profiles of Urban Air Pollutants

  In a recent study led by Dr. LI Chunlin and Dr. LIU Miao from the Landscape Ecology Research Group of the Institute of Applied Ecology (IAE) of the Chinese Academy of Sciences (CAS), the researchers investigated the vertical characteristics (0 - 120 m) of air pollutant concentrations (SO2, NO2, PM1, PM2.5 and PM10) using an unmanned aerial vehicle (UAV) equipped with sensors along a sampling belt in the built-up area of Shenyang, an old industrial base in China, capital of Liaoning Province and high-end manufacturing base today.

  Dec 05, 2022
• Central Heating, Natural Factors and Landscape Pattern Indices are Main Factors Influencing Seasonal and Spatial Patterns of Airborne Particulate Matter Concentration in Northeast China

  To explore seasonal pattern and influencing factors of UPM in Northeastern China, Dr. LI Chunlin, associate professor from the Landscape Ecology Research Group of the Institute of Applied Ecology (IAE) of the Chinese Academy of Sciences (CAS), led an investigation in Shenyang, an old industrial base in China, capital of Liaoning Province and high-end manufacturing base today. From March 2019 to February 2020, the researchers creatively used wearable air pollution monitoring devices to collect UPM (PM1, PM2.5, and PM10) data in the built-up areas of Shenyang City.

  Nov 29, 2022
• Researchers Propose a Comprehensive Evaluation Index Linking Urban Flooding with Socioeconomic Conditions of Mega-cities

  With the aim of investigating spatial patterns and driving factors of urban flooding in megacities in China, Dr. LI Chunlin, associate professor from the Landscape Ecology Research Group of the Institute of Applied Ecology (IAE) of the Chinese Academy of Sciences (CAS), together with his colleagues, analyzed flood records of eight megacities in China (Beijing, Guangzhou, Nanjing, Shanghai, Shenzhen, Tianjin, Wuhan and Xi'an) using landscape ecological approach and spatial statistics.

  Nov 29, 2022
• Researchers Reveal the Distribution Pattern and Environmental Factors of Belowground Bud banks in Large-scale Environment Transects

  Dr. MA Qun from Institute of Applied Ecology, Chinese Academy of Sciences and his collaborators have studied the spatial pattern of belowground bud banks along grasslands of northern China. The study was published in Land degradation and development.

  Nov 24, 2022
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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