云南元谋干热河谷区不同岩土类型荒山植被恢复研究

STUDY ON VEGETATION REHABILITATION ON THE SLOPES OF THE ARID AND HOT VALLEYS IN YUANMOU, YUNNAN

云南元谋干热河谷坝周低山区不同岩土组成的坡地的土壤水份环境差异较大，因而植被恢复模式应有区别：砾石层阶地丘陵坡地土壤水分环境最为湿润，适宜恢复较完密的森林植被；片岩和半成岩砂砾岩低山坡地次之，适宜恢复疏林灌单植被；泥岩低山坡地最差，适宜恢复稀树灌草植被．

In the arid and hot valley areas in Yuanmou, Yunnon, because of the varied soil moisture conditions caused hy different rock and soil components, the vegetation rehabilitation should be carried out differently on the shopes. The hilly slopes with terrace gravel deposits are suitable for dense forests; the slopes underlaid by schist or semicoserlidated sand and gravel deposits are suitable for shrubs and grasses mixed with some trees; and those with mudstones are best for shrubs and grasses with few trees.