海岸带前沿沙地湿地松生态适应性及生长效果研究

STUDY ON ECOLOGICAL ADAPTABILITY AND GROWTH OF SLASH PINE ON SANDY LAND OF THE FRONT OF COAST

通过对沙荒风口选择湿地松造林，前沿基干林带不同郁闭度套种湿地松、林带更新湿地松不同密度造林及湿地松与其它树种混交造林更新效果调查，表明：湿地松在风口沙地造林适应性较强，在低郁闭度（０．３以下）林带下套种更新效果与迹地更新相近，湿地松不同密度林带更新效果较好，湿地松与厚荚相思、刚果 １２号桉等树种单行混交造林易引起受压现象产生，多行配置即有利于形成多层次空间结构，又可防止湿地松被压，保护湿地松不受风害。

Experments of afforestation with slash pine at wind gap s ,interplanting of slash pine under sparse trunk shelterbelts and mixed plantatio n of the pine showed that adaptability of slash pine afforested at wind gaps in sandy land is better. Generation effect of slash pine in different densities is b etter.One-row mixing of slashpine with A.crassicarpa and Eucalyptus 12ABL is liable to occur constriction.Multiple row allocation i s helpful to form polylayer stands and prevent slash pine from constriction and wind injury.