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阳坡造林,在很大程度上是指抗旱造林。它是阳坡立地条件因子和生物因子综合作用的产物。所谓干旱,是植物生育期内,某一阶级水份供应不足而影响植株正常发育的一种自然灾害。干旱程度是和缺水多少(或土壤供水多少)植物生育阶段的生态特性和抗旱措施等密切相关的,而降水少,空气干燥,蒸发力强,则是干旱的主要气候特征。一、阳坡造林概述(一)阳坡造林对象阳坡一般包括阳坡、半阳坡。按森林罗盘仪水平度盘说,阳坡为160—220°之间,半阳坡为110—160°和220—270°之间,在这
Sunny slope afforestation, to a large extent refers to the drought afforestation. It is the product of the combined effect of biodegradation and biodegradation factors on sunny slope. The so-called drought is a kind of natural disasters that affect the normal development of plants during the growth period of plants. The degree of drought is closely related to the ecological characteristics and drought resistance measures during the growth stage of the plants such as water shortage (or soil water supply), while less precipitation, air drying and strong evaporation are the main climatic characteristics of drought. First, the sunny slope afforestation overview (A) sunny slope Afforestation sunny slope generally include sunny, semi-sunny slope. According to the horizontal compass of forest compass, the sunny slope is between 160-220 °, the half-sunny slope is between 110-160 ° and 220-270 °,