【摘要】 攀枝花市地处金沙江干热河谷 ,视野区荒山植被建设 ,多年来一直采用雨养造林的技术路线 ,未能改变“雨季郁郁葱葱 ,旱季一片枯黄”的稀树草原植被景观。干热河谷森林植被难以恢复的主要原因是旱季干旱缺水。微水造林是采用微型水利工程措施 ,拦蓄雨季径流 ,改善坡地旱季土壤水分状况 ,造林育林。视野区山地山高坡长 ,毛支沟发育 ,雨季洪水径流充沛 ,非常适合采用微水造林的技术路线 ,营造四季常青的南亚热带常绿森林植被。更多还原

【Abstract】 Panzhihua city is located in the Jinshajiang river hot and dry valley. The classic artificial forestation technique, by which preci pitation is the only water sources for the soil moisture of the forestation fiel d, has been used for revegetation in the view area from the city urban since 196 0s. It is difficult to establish forest vegetation in most of the view area by u sing the classic technique because of the dry soil moisture conditions during th e seven months dry season (November-May), and savanna is still the main veget ation type in the area. A number of small gullies are developed on the hill slop es with a long length and have considerable runoff during the wet season in the view area. Ever-green forests can be established if the soil moisture condition s are improved during the dry season. The micro-water harvesting technique is r ecommended to harvest the wet seasons runoff from the gullies on hill slopes f or improving the soil moisture conditions in the forestation fields during the d ry season.更多还原