Research Progress

• Whether There are General Patterns in Biomass Partitioning in Relation to Environmental Variation When Stand Biomass is Considered

  Using forest biomass data from 1022 sites across China, including 110 sites at which performed field measurements from 2011 to 2012, and 912 sites from the national forest inventory data set (2004-2008), researchers from the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) investigated the biogeographic patterns of biomass allocation in leaves, stems, and roots based on a large-scale biomass survey across forest communities in China.

  Feb 28, 2016
• Developmental Changes in Small Intestine of Piglets During the Suckling and Post-weaning Periods

  Researchers in the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) used sixty-four neonatal piglets from 8 litters (8 piglets per litter). Some piglets were be nursed by sows till to 21 days old, whereas other piglets were weaned at 14 days old and housed the same farrowing cage without sow and fed with creep feed. Eight piglets were slaughtered from each litter at 1, 7, 14, 21 day of age and on 1, 3, 5, 7-day after weaning. They employed hematoxylin-eosin staining, scanning electron microscopy, real-time quantitative, and assay kit to observe the intestinal morphology, the expression of tight junction proteins and Kv, and activity of brush enzyme. The team found that the most serious damage of intestinal morphology and barrier induced by early-weaning at 14 day of age occurs on day 3 or 5; there is an adaptive restoration on day 7 post-weaning, but does not return to the pre-weaning levels that showed impairment of intercellular junctions and Kv channels.

  Feb 25, 2016
• Soil Water Stable Isotope Varies Differently From Soil Water Content in Space

  study the spatial variability of soil water content and its stable isotope composition together could help to better understand the ecohydrological processes in this region. The team found the spatial variability of soil water content and its dD value were rather different.

  Feb 24, 2016
• How Soil Properties Control Decomposition of Soil Organic Carbon at Large Spatial Scales?

  Decomposition of soil organic matter (SOM) plays an essential role in terrestrial carbon (C) cycling. So far, there is un-sufficient knowledge about how soil organic carbon (SOC) decomposition rates vary at a large spatial scale and which factors control SOM decomposition.The researchers found that hypotheses of soil property-C decomposition relationships have not been explicitly tested at large spatial scales.

  Feb 23, 2016
• Simulated Tillage Affects Microbial Autotrophic CO2 Fixation in Paddy and Upland Soils

  Physical disturbance introduced during soil management practices (such as tillage) may disintegrate the soil structure, causing pronounced changes in the soil microbial community involved in biogeochemical processes, such as carbon sequestration. The researchers found that soil disturbance altered the abundance of cbbL-carrying autotrophic bacteria, and this shift in autotrophic bacterial abundance was accompanied by significant changes in CO2 fixation, resulting in significant enhancement of soil organic carbon concentration.

  Feb 22, 2016
• Emissions of NO and N2O in Wetland Microcosms for Swine Wastewater Treatment

  China is one of the world's largest producers of pork, and swine wastewater treatment is becoming an urgent issue in the country. In recent years, constructed wetlands (CWs), an effective and inexpensive technology, have been widely used to treat swine wastewater.Using a closed static chamber method, researchers from the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) estimated NO and N2O emissions in wetland microcosms vegetated with Myriophyllum elatinoides (WM), Alternanthera philoxeroides (WA), Eichhornia crassipes (WE) or without vegetation (NW) during the process of treating swine wastewater.

  Feb 02, 2016
• Bacterial Laccase-like Genes and Fungal Laccase Gene are Present in Subtropical Arable Lands

  A team of researchers from the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) sampled from typical six sites containing the main soil types and agricultural land uses in subtropical China, and then detected the laccase activity and the abundance, diversity and composition of bacterial laccase-like genes and fungal laccase genes.

  Feb 02, 2016
• A Non-toxic New Iron Supplement Candidate: Ferrous N-carbamylglycinate Chelate

  In order to improve the iron defiiency problems in new born piglets, the researcher group in Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) had designed a new iron chelate ferrous N-carbamylglycinate as an iron fortifier (patent No: 201310142525.4), which aimed to improve iron bioavailability and reduce extra digestion.

  Jan 29, 2016
• How Ruminal Protein and Feed Intake Effect on Endogenous Nitrogen and Amino Acids Flow in Goats?

  Rumen is one of the most important parts for the ruminants, which help ruminant acquire nutrients from plant-based food by fermenting it in a specialized stomach prior to digestion, principally through microbial actions. In order to make a more accurate estimation of true N digestibility and know how much dietary N is needed to cover the requirement for EN and endogenous AA (ENAA) loss by the knowledge of EN loss, PhD. ZHOU Chuanshe and his group from Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) ,led by professor TAN Zhiliang, carried out an experiment.

  Jan 29, 2016
• MicroRNA-27b Overexpression Improves Mitochondrial Function and Insulin Resistance

  Mitochondria are the principal energy sources of the cell that convert nutrients into energy through cellular respiration. Recently, researchers in the Institute of Subtropical Agriculture, Chinese Academy of Sciences (ISA) and Clinical Laboratory Department, Hunan Guangxiu Hospital studied the effects of MicroRNA-27b (MiR-27b)-a target of resveratrol, on mitochondrial function in skeletal muscle and C2C12 cell myoblast.

  Jan 28, 2016