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邻体干扰推广模型及其在林草生态系统的应用(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1999年03期
Page:
7-11
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
An Improved Model of Neighbourhood Interference and Its Applicaton in Forest_herb Ecosystem
Article ID:
1000-2006(1999)03-0007-05
Author(s):
Author Li GenqianTang DeruiHe JingfengWang Dihai
Forestry Research Institute of Shanxi ProvinceYangling712100
Keywords:
Ecommia ulmoides Herbs Improved model of neighbourhood interference Effect of neighbourhood interferencewth rate of E. ulmoidesand indicated the dynamic rule of herbs interference with trees and intra_species thining of herbs.
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1999.03.004
Document Code:
A
Abstract:
Forest_herb ecosystem, Eucommia ulmoides intercropping with Trifolium pratense and T. repense, E. ulmoides intercropping with Lolium perene, E. ulmoides and Artemisia spp. mixed community, was investigated and the relationship between height growth rate of tree individual and interference intensity of neighbourhood herbs was analysed by using the improved model of neighbourhood interference. The results showed that: 1. Trifolium spp. increased the growth rate of E. ulmoides (positive effect), while L. perene and Artemisia spp. reduced the growth rate of E. ulmoides (negative effect); 2.interference intensity was in proportion to quantitative characters, such as coverage, weight of biomass and height of herbs, and in inverse proportion to the size of subject tree when the effect of neighbourhood interference was negative, and in proportion to the size of subject tree when the effect was positive; 3.the effect models of neighbourhood interference accounted for 25%70% of the variation in the height gro

References

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Last Update: 1900-01-01