1. bookVolume 57 (2008): Issue 1-6 (December 2008)
Journal Details
License
Format
Journal
eISSN
2509-8934
First Published
22 Feb 2016
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1 time per year
Languages
English
Open Access

Pollen Dispersal and Its Spatial Distribution in a Seed Orchard of Larix kaempferi (Lamb.) Carr.

Published Online: 14 Oct 2017
Volume & Issue: Volume 57 (2008) - Issue 1-6 (December 2008)
Page range: 256 - 261
Received: 04 May 2007
Journal Details
License
Format
Journal
eISSN
2509-8934
First Published
22 Feb 2016
Publication timeframe
1 time per year
Languages
English
Abstract

Pollen dispersal and its spatial distribution in a seed orchard of Larix kaempferi in Changlinggang, Jianshi, Hubei Province has been studied for 3 years. The results show that pollen dispersal is directly affected by weather conditions, with wind speed being the main factor controlling pollen dispersal. Pollen dispersal follows a date rhythm of low-high-low during the whole pollen dispersal season with a peak date for 3-5 days, and a time rhythm of low-high-low with the peak time at 10:00-16:00 during the day. For pollen density in the air there are significant differences among dates, and among different day times during dispersing. There are no significant differences between pollen densities in space with regard to horizontal directions, 8 orientations, and different positions in the tree crown in this seed orchard, in all of these cases pollens are evenly distributed. There are significant differences for pollen densities among different vertical heights, showing a cluster distribution type. The pollination level in this seed orchard is very low and needs a supplement mass pollination (SMP).

Keywords

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