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DocumentEffect of eco-friendly restoration on the community characteristics of benthic macroinvertebrates in forested bog
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.This study was conducted to identify the stability and the community structure of benthic macroinvertebrates after the restoration in order to evaluate the restoration ability of aquatic ecosystems according to the eco-friendly restoration in the forested bog. The benthic macroinvertebrates collected from the surveyed sites were composed of 1,071 individuals, 60 species, 40 families, 13 orders, 6 classes, and 5 phyla. At the control and Site 3 (small dam), the number of species and individuals were larger than that of other sites, and EPT group ratio was the same as well. Considered by index, the dominance index (DI) was found the highest at the biotope area. The diversity index (H’) and richness index (RI) was the highest at the control and Site 3. In addition, ESB value showed the highest at site 3, while the lowest at the biotope area. The stability and recovery of benthic macroinvertebrates showed differences according to restoration types at the forested bog. The vertical structure installed for the restoration decreased the flow velocity. It is judged that soil and rocks deposited at the upper part of the stream created a habitat space to increase the species that live at its basis. In addition, it showed that when a pool was created inside the forested bog to maintain the water resource, benthic macroinvertebrates came there to live, and the aquatic ecological environment was improved. The value of a stable community index depending on the restoration suggests that the eco-friendly restoration can provide a more suitable environment for aquatic animals. Keywords: Climate change, Biodiversity conservation ID: 3622538 -
DocumentEffects of different management models on soil organic carbon of natural secondary forests of Quercus Mongolica in China
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.How to improve soil organic carbon content and stock has become the emerging scientific issues under the background of low soil fertility of natural secondary forests in Northeast China. In this study,, we will analyze the impacts of natural restoration management regime, target tree-based forest management regime, and conversion to mixed local valuable broadleaved forest management regime for secondary Quercus mongolica forest on soil organic carbon stocks in a forestry fram of Heilongjiang province. The result showed: (1) SOC content ranked as target tree-based forest management ＞ natural restoration management ＞ conversion to mixed local forest management, and TN,TP, AN, AP and water content were the key factors impacted the SOC content; (2) The different management have no impact on cfPOC and MOC, but the ffPOC content was significantly decreased under target tree-based forest management, while iPOC content was significantly increased under conversion to mixed local forest management; (3) The relative proportion of the functional groups were ranked as O-alkyl C > alkyl C > aromatic C > carbonyl C; (4) MBC was rankded as target tree-based forest management ＞ natural restoration management ＞ conversion to mixed local forest management, and the invertase activity and catalase activity were increased under target tree-based forest management, while urease activity was increased under conversion to mixed local forest management; (5) The carbon sequestration potential was ranked as conversion to mixed local forest management ＞ natural restoration management ＞ target tree-based forest management. In conclusion, these results indicated that the target tree-based forest management has the highest potential to sequestrated carbon in forest soil, and it is a rational management to increase SOC, while conversion to mixed local forest management lead to a loss of SOC and need to protect and repair in future to increase the SOC content. Keywords: Sustainable forest management, Deforestation and forest degradation, Deforestation and forest degradation; Adaptive and integrated management, Policies ID: 3486596 -
DocumentHow is human breathable air changed by forests?: The characteristics of natural VOC in birch forests
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Since the outbreak of new viruses that cause highly infectious diseases among humans, such as SARS and COVID-19, people are increasingly interested in healthy living surrounded by nature. The pursuit of physical comfort is instinctive in most human beings; therefore, the influence of natural environment on humans is significant. Terms such as healing forest and forest medicine are associated with forests in some countries. Natural VOC, representing the healing forest factor, are widely known as phytoncide in Korea. Several studies have shown that NVOC emitted from forests have various beneficial effects such as disease prevention and health improvement.
In this study, 380 samples were collected and analyzed to examine the characteristics of NVOC emitted from forest in Inje where many citizens visit to enjoy landscape. In this study, NVOC were analyzed in November 2018, May and July 2019, and measurements were performed at three different locations considering movement of citizens. Using mini pump and stainless steel tube filled with Tenax TA, 9L of NVOC was collected at a speed of 150mL/min.
The analysis of NVOC composition in forest on an annual basis showed that it comprised α-pinene 27%, camphor 10%, and β-pinene 9%. Examination of the pattern of intraday NVOC concentration revealed that it was relatively high in the afternoon and increased when photoenvironment changed, where as the influence of wind speed. Evaluation of the correlation between the NVOC concentration and the microclimate in the forest showed that the concentration increased markedly with the increase in temperature and humidity, and the concentration decreased with the increase in wind speed. When the NVOC emission tendency of the birch forest was analyzed by season, high NVOC concentrations were detected in summer. In conclusion, these results can be used as basic data for the technical development of forest space management related to the establishment of forest healing spaces in the future. Keywords: Human health and well-being, Monitoring and data collection, Covid-19, One Health ID: 3477860
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