Welcome to visit Scientia Silvae Sinicae,Today is

Scientia Silvae Sinicae ›› 2013, Vol. 49 ›› Issue (7): 163-169.doi: 10.11707/j.1001-7488.20130724

Previous Articles     Next Articles

Construction of a Mathematic Model for Forecasting Viviparous Propagule Yield of Bruguiera gymnorriza

Huang Jianjian1, Liu Suqing2, Li Jiping3, Han Weidong2   

  1. 1. Cunjin College of Guangdong Ocean University Zhanjiang 524094;
    2. Agriculture College of Guangdong Ocean University Zhanjiang 524088;
    3. College of Forestry, Central South University of Forestry & Technology Changsha 410002
  • Received:2012-09-01 Revised:2013-04-17 Online:2013-07-25 Published:2013-07-23

Abstract:

Construction of a mathematic model for forecasting viviparous propagule yield of Bruguiera gymnorrhiza is important for mangrove forestations and mangrove management. In this study, viviparous propagules of B. gymnorrhiza were used as the research object in Mangrove Nation Natural Reserve at Gaoqiao, Zhanjiang city, Guangdong province. The indexes of different layers were investigated, and then the multivariate analysis in regressive and path analysis were conducted to construct a mathematic model for forecasting viviparous propagule yield of B. gymnorrhiza. The result showed that: B. gymnorrhiza seed yield was very significantly correlated with the diameters of basal stem and crown. It also had significantly positive correlation with the diameter and crotch angle of lateral branches in first class, leaf length, or leaf-shaped index, suggesting the seed yield had close relationships with phenotypic characteristics. Thus, we could regulate the yield by changing the phenotypic characteristics. With multiple stepwise regression analysis we constructed effective regression equation: Y =-148.131+127.471 X4-11.113 X5+2.048 X7, which can be used for forecasting and controlling B. gymnorrhiza viviparous propagule yield. The results of path analysis showed that the factors determining the seed yield were X4 > X7 > X5. Thus, increasing the crown is the best way to increase the seed yield for individual B. gymnorrhiza.

Key words: Bruguiera gymnorrhiza, viviparous propagule, forecast yield, forecasting model

CLC Number: