欢迎访问林业科学,今天是

林业科学 ›› 2003, Vol. 39 ›› Issue (zk): 27-31.doi: 10.11707/j.1001-7488.2003S105

• 论文及研究报告 • 上一篇    下一篇

沿海木麻黄防护林基干林带防风效能定量评价研究

谭芳林 朱炜 林捷 林武星 付忠华   

  1. 福建省林业科学研究院,福州350012
  • 收稿日期:2003-03-21 修回日期:1900-01-01 出版日期:2003-12-25 发布日期:2003-12-25

QUANTITATIVE EVALUATION ON PROTECTION EFFECT OF CASUARINA EQUISETIFOLIA SHELTERBELT IN COASTAL AREA,FUJIAN PROVINCE

Tan Fanglin,Zhu Wei,Lin Jie,Lin Wuxing,Fu Zhonghua   

  1. Fujian Academy of Forestry Fuzhou350012
  • Received:2003-03-21 Revised:1900-01-01 Online:2003-12-25 Published:2003-12-25

摘要:

对福建省东山赤山防护林场的木麻黄基干林带防风效能进行了定量评价。结果表明:运用数量化理论Ⅰ得到的沿海木麻黄基干林带防风效能预测方程预测精度较高。影响木麻黄基干林带防风效能的主要因子为胸径、冠幅和树高,地貌类型和林分密度对基干林带的防风效能有显著的影响,而枝下高的影响很小。把得分值小于0.440的一代木麻黄基干林带(指生长后期的林带)定义为低效防风林带,应及时进行更新改造。另外,把防风效能的预测值0 .613作为判断基干林带进入防护成熟初期和防护成熟末期的阈值。

关键词: 木麻黄, 基干林带, 防风效能, 数量化理论Ⅰ

Abstract:

Coastal Casuarina equisetifolia protection forest, especially main shelterbelt, takes very important role at improving ecological environment and promoting economy and society development. It is the base for classifying the type of main shelterbelt, measuring the term of protection maturity, and renewing and modifying main shelterbelt to quantitatively evaluate the protection effect of main shelterbelt. The protection effect of C. equisetifolia shelterbelt was evaluated with the quantitative theoryⅠ. The results showed: it could estimate the protection effect of main shelterbelt using the equation educed form quantitative theoryⅠ, and it had the higher precision. DBH, width of tree crown, and height decided the protection effect obviously, the type of physiognomy and stand density also effected it, but bole length had not obvious effect. The definition was given for the lower-effective plantation whose score of protection effect was lower than 0.440. Protection effect score—0.613 was regarded as the threshold for deciding the initial stage and telophase of protection maturity.

Key words: Casuarina equisetifolia, Main shelterbelt, Protection effect, Quantitative theory Ⅰ