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林业科学 ›› 2003, Vol. 39 ›› Issue (2): 64-70.doi: 10.11707/j.1001-7488.20030211

• 论文及研究报告 • 上一篇    下一篇

毛竹林生态系统经济阈值模型的研究

何东进 洪伟   

  1. 福建农林大学林学院,南平353001
  • 收稿日期:2000-11-17 修回日期:1900-01-01 出版日期:2003-03-25 发布日期:2003-03-25

A STUDY ON ECONOMIC THRESHOLD MODEL OF PHYLLOSTACHYS PUBESCENS ECOSYSTEM

He Dongjin,Hong Wei   

  1. Forestry college of Fujian Agriculture and Forestry University Nanping353001
  • Received:2000-11-17 Revised:1900-01-01 Online:2003-03-25 Published:2003-03-25

摘要:

如何确定合理的挖笋量是毛竹林丰产经营的关键问题。本文通过在建瓯设立50块毛竹林标准地,分别建立了毛竹林笋产量预测模型与林分平均胸径预测模型,在此基础上,运用经济阈值的手段对毛竹林生态系统进行研究,提出了毛竹林生态系统经济阈值的概念及研究方法,建立了毛竹林生态系统经济阈值模型,并结合实例对毛竹林生态系统经济阈值模型的应用给予了说明。本研究不仅丰富了经济阈值的研究内容与应用范畴,而且也为毛竹林的优化经营和丰产培育提供新的依据与技术。

关键词: 毛竹, 生态系统, 经济阈值

Abstract:

How to determine the reasonable amount of bamboo shoot dug in a certain bamboo stand is a key problem in the high-yield management of Phyllostachys pubescens. Using the data obtained from 50 plots of Phyllostachys pubescens, the predictive models of bamboo shoot yield and mean D.B.H were built in this paper. Based on the two models, the method of economic threshold was introduced into the research field of bamboo, the new concept of economic threshold of Phyllostachys pubescens ecosystem was put forward, and the economic threshold model of Phyllostachys pubescens ecosystem was founded as follows: M×P sh k∑T-1i 1Δy-ie -iδ+Δy-Te -TδP-{sh}+RMW sh+R(1-k)W sh∑T-s+1i 1Δy-ie -(I+s)δ]P-b +R(1-k)W- sh∑T-1i T-sΔy-ie -TδP-b-F-0∑Ti 1e -iδ. Therefore, this paper not only enriched and developed the research content and application, field of economic threshold, but also provided a scientific basis for the management of Phyllostachys pubescens, and would contribute to realizing its goal of sustainable development and high yield. P-b +R(1-k)W- sh∑T-1i T-sΔy-ie -TδP-b-F-0∑Ti 1e -iδ. Therefore, this paper not only enriched and developed the research content and application, field of economic threshold, but also provided a scientific basis for the management of Phyllostachys pubescens, and would contribute to realizing its goal of sustainable development and high yield.

Key words: Phyllostachys pubescens, Ecosystem, Economic threshold