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[Rainffall interception model of forest canopy: a preliminary study].

Mingchun Guo1, Pengtao Yu, Yanhui Wang

  • 1Chinese Academy of Forestry, Beijing 100091, China. mingchunguo@sina.com

Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|December 17, 2005
PubMed
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This study developed a forest canopy interception model, accurately simulating rainfall throughfall and stemflow. The model enhances understanding of forest hydrology and water resource management.

Area of Science:

  • Forest hydrology
  • Ecosystem modeling
  • Water cycle dynamics

Context:

  • Forest canopy interception significantly influences hydrological processes.
  • Accurate modeling is crucial for understanding rainfall partitioning in forest ecosystems.
  • Existing models often lack detailed consideration of trunk and canopy evaporation dynamics.

Purpose:

  • To develop and validate a canopy rainfall interception model.
  • To incorporate canopy and trunk dryness, leaf area index (LAI), and surface area of trunk (SAI) into evaporation calculations.
  • To simulate and analyze rainfall interception processes in a Larix principis-rupprechtii plantation.

Summary:

  • A novel canopy rainfall interception model was established by segmenting rain events and calculating intercepted rainfall and evaporation.

Related Experiment Videos

  • The model integrates LAI and SAI to account for evaporation from wet canopy and trunk surfaces.
  • Simulations for a Larix principis-rupprechtii plantation showed high accuracy, with throughfall deviations within +/- 1 mm and good agreement for stemflow, especially during larger precipitation events.

    • Impact:

    • Provides a robust tool for simulating forest rainfall interception and water balance.
    • Improves estimations of throughfall and stemflow, crucial for hydrological research and forest management.
    • Contributes to a better understanding of water movement through forest canopies, aiding in water resource assessment and climate change impact studies.