摘要
对海南岛尖峰岭地区热带珍贵树种母生、海南石梓人工林下种植经济作物益智、咖啡的复合农林业系统的生态和经济效益研究表明：复合系统能显著促进主林层乔木的生长，胸径生长速度比对照地高出４３％～１３４％，材积生长高出１８％～８１％，生物量高出５％～８６％；生物量净积累量９．５３～１５．２３ｔ·ｈｍ－２·ａ－１，为对照地的１．６～５．１倍；系统的光能利用率为０．７８％～１．２６％，为对照样地的１．９４～５．０４倍；同时系统具有较高的经济效益，林下种植益智后的产值可达１．８～３万元·ｈｍ－２·ａ－１，为对照地的５．２６～９．８２倍，投入产出比为１∶２．９３～１∶４．１７。
This paper
summarized the benefits of three agroforestry systems in tropical area of China. The
systems are the endemic species Homalium hainanense plantation intercropping medicine
plant Alpinia oxyphylla and coffee, Gmelina hainanensis plantation intercropping A.
oxyphylla. The results indicated that the growth of the plantation was promoted after
intercropped the economic plants. For contrasting with the control sites,the growth rates
of tree DBH,timber volume and biomass on the intercropped sites were higher over
43%134%,18%81% and 5%86% than those on the control sites,respectively. The net
accumulation values of biomass on the intercropped sites were 9.5315.23 thm-2a-1,and
these were 1.65.1 times of that on control sites. The utilizing rates to solar energy of
the systems were also 1.945.04 times of the control sites and were up to 0.78%1.26%.
The agroforestry systems po la ssessed a high economic benefit with 1870030400 Yuan
RMBhm-2a-1 and were 5.269.82times of that of the control sites. The ratio for input and
output values of the systems were higher to 12.9314.17.
出处
《林业科学研究》
CSCD
北大核心
1999年第2期139-145,共7页
Forest Research
基金
林业部"九五"重点项目
ITTO资助项目
关键词
复合农林业
生态效益
经济效益
热带地区
agroforestry
benefit
Homaliun hainanense
Gmelina hainanensis
Alpinia oxyphyl
