三峡库区马褂木水源涵养林复合经营模式研究

马褂木是重要的绿化、用材和水源涵养林兼用树种.三峡库区栽培面积已超过2 400 hm2.本文通过分析8种复合经营模式的效益,来综合评价不同的复合经营模式.通过对比分析,复合经营的马褂木胸径生长量年均提高10％以上.复合经营的马褂木-桔梗模式、马褂木 白术模式的年收入最高,投入大;而柴胡、黄芪和黑豆投入小、种植技术比较好掌握.试验出的几种模式可减少土壤侵蚀量33.3％,生态效益显著.根据推广应用前景,结合药材市场需求种植,提高土地利用率和单位面积产出,促进林农增收.

Study on Compound Management Pattern of liriodendron chinense Water Conservation Forest in Three Gorges Reservoir Area

Liriodendron chinense is an important tree species of greening, timber and water conservation for- ests. The Three Gorges Reservoir Area in hubei province cultivated area has more than 2 400 hm2. The eight compound modes benefit is analyzed by the paper that comprehensive evaluated the different compound system. Liriodendron chinense of compound management wood DBH growth increased more than 10% per year. the an- nual income of Liriodendron chinense-Platycodon grandiflorus , Liriodendron chinense-Atractylates macrocephala is highest, investment is large, the planting technology of Bupleurum, astragalus, black soybean is well re- ceived, investment is small. Several test modes can reduce the amount of soil erosion 33.3%, ecological benefits is significant. According to the application of different situation, market demand and planting, improve land use rate and unit area output,promote farmers income.