Thumbnail Image

Morphological and physiological traits related to PM 2.5 reduction capacities in 13 landscaping tree species

XV World Forestry Congress, 2-6 May 2022

Year of publication 2022

Place of publication Rome, Italy ;

Pages 1p.

Author Kim, K., Jeon, J., Jung, H. J., et al.

Publisher FAO ;

Product type Document

Synopsis (short abstract) With the increasing use of fossil fuels, fine particulate matter (PM2.5) is emerging as a serious environmental problem worldwide. In particular, the damage caused by PM2.5 in urban areas, where industrial complexes and human activities are concentrated, is extremely problematic, posing a threat to human health. Thus, the importance of landscaping trees is increasing because of their ability to reduce PM2.5; however, there remains a lack of research on the selection of species and tree management for PM2.5 reductions. In this study, we quantified and compared the PM2.5 reduction capacities of 13 major landscaping tree species and analyzed the relationship between the physical and physiological characteristics of each species and PM2.5 reduction. Results showed that the amount of PM2.5 reduction differed among species; reduction per leaf area was the highest in Ginkgo biloba (0.127 ± 0.024 μg cm-2) and the lowest in Pinus strobus (0.0072 ± 0.0008 μg cm-2). Moreover, PM reduction by the broadleaf species (0.085 ± 0.007 μg cm-2) was approximately 9.4-fold that by the needleleaf species (0.009 ± 0.001 μg cm-2). Correlation analysis revealed that differences in PM2.5 reduction were described by specific leaf area between species (P = 0.004), and explained by the length of margin per leaf area among individual trees (P < 0.05). Additionally, reduction in PM2.5 correlated with photosynthetic properties such as maximum assimilation and carboxylation rates, indicating that PM2.5 is reduced not only by physical but also by physiological processes (P < 0.001). These findings emphasize that for effective reduction in PM2.5 through landscaping trees, comprehensive consideration of the physical and physiological characteristics of the species is essential in species selection, and that continuous management is also necessary to maintain the active physiological conditions of the trees. Keywords: Human health and well-being, Adaptive and integrated management, Landscape management ID: 3617896

Statutory body / Meeting title World Forestry Congress (WFC)

Language English

Also available in:
No results found.

Related items

Showing items related by metadata.

  • Thumbnail Image
    Article
    Towards transformation of agricultural landscapes: Determination of agroforestry tree species producing beneficial ecosystem services to local farmers in Nigeria
    XV World Forestry Congress, 2-6 May 2022
    2022
    Also available in:
    No results found.
    The aim of this study is to transform agricultural landscapes through incorporating tree species that produce ecosystem services beneficial to local farmers. To achieve this, the study assessed existing diversity of tree species producing ecosystem services in agricultural farmlands in selected local communities of southwest Nigeria. The information obtained will then be used to design strategy for intensification of agroforestry tree species for transformation of agricultural landscapes. Purposive sampling was employed in selecting 66 local farmers who has personal farmlands. Information on available tree species and their diversification on farmlands were obtained through inventory and field observation. Primary information obtained through questionnaire administration include ecosystem services provided by trees on the farmlands. A total of 38 forest tree species (24 families) were identified on the different farmlands. Provisioning services dominated the ecosystem services benefits obtained by the farmers and their households. The study has revealed the different ecosystem services provided by forest trees on farmlands. Meanwhile, most of the farmers prefer trees that meet their personal needs. This means for proper adoption of forest trees at local level in agroforestry system, such trees must be able to meet local demands by providing some of their basic needs. The basic needs range from food to medicines, energy, cultural benefits, among others. Meeting of such needs are sometimes location specifics, hence the needto carry out adequate survey of such needs for intended intervention strategy. Keywords: Agriculture, forest tree species, farmlands, provisioning services, ecosystem serviceId ID:3480958
  • Thumbnail Image
    Article
    Growth and physiological acclimation to shade in young plants of Adesmia bijuga Phil., critically endangered species in central Chile
    XV World Forestry Congress, 2-6 May 2022
    2022
    Also available in:
    No results found.
    Adesmia bijuga Phil. is an endemic and endangered shrub species of central Chile. Its potential shade intolerance is one of the leading hypotheses for its vigor loss when the species grows beneath closed canopies. In this study we aimed to assess growth and physiological acclimation to shade in young of A. bijuga plants. A nursery experiment was established with three light levels based on the interception of photosynthetic active radiation (PAR) (TRT0: control at full sun, TRT60: 60% shaded, and TRT90: 90% shaded), and maintained for 71 days during the summer season. Growth and leaf morpho-physiological responses were evaluated at the beginning, at the middle, and at the end of the experiment. The shading treatment increased plant height (H) and live crown percentage (Lcrown) compared to the control treatment at full sun. However, light-saturated photosynthetic rate (Amax), dark respiration rate (Rd), and light compensation point (Gi) were higher in TRT60 than in the other treatments.No differences were found among treatments for the apparent quantum yield (α). At this stage of plant development, our results suggest high acclimation plasticity of A. bijuga to light levels; however, a semi-shade environment (i.e., TRT60) favored a better performance of the species. Keywords: Shade tolerance, photosynthesis, light acclimation, forest restoration. ID: 3624055
  • Thumbnail Image
    Article
    Restoration of productive landscapes through management of trees on-farms in the off reserve landscape through tree registration and climate smart farming systems in Ghana
    XV World Forestry Congress, 2-6 May 2022
    2022
    Also available in:
    No results found.
    Ghana has a total land area of 238,540 km2 and approximately 15% of the country has been set aside as forest reserves, wildlife parks, and the remaining 85% is owned by stools, skins and individuals across the country. All naturally occurring trees in off reserve landscapes are vested in the state but they occur in individual and community lands and farms. Most of Ghana’s agricultural system embraces the retention of trees during the course of cultivation with trees integrated in a mixture with crops. In the past, farmers destroyed these trees because their cocoa farms were destroyed by felling of trees for timber and they could not get compensation or any support from the state. To achieve Ghana’s Forest policy goals and objectives of the forest Plantation strategy, Ghana is piloting a programme to provide legal support for farmers, optimize the productivity and sustainability of smallholder farming systems by developing appropriate technologies that involve trees (incorporation of trees-on farm within 3.75 million hectares) and enhances connectivity and biodiversity between the agricultural and forest landscapes. A pilot programme to register all planted and naturally occurring trees at the district level has begun with recent support from Climate Investment Fund through Ghana’s Forest investment programme (GFIP) to provide options for tree tenure regimes, tree ownership and benefit sharing mechanisms for farmers to plant more trees. This paper highlights the importance of trees on farm for landscape restoration, legal framework and the procedures for tree registration, identified strengths and weaknesses and potential for climate change mitigation and adaptation as well as sustained reduction in degradation and deforestation whilst increasing productivity per hectare for farmers. Keywords: Landscape management, Deforestation and forest degradation, Climate change, Agriculture, Sustainable forest management ID: 3624089
Show more

Users also downloaded

Showing related downloaded files

No results found.