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侧柏[Platycladus orientalis(L.)Franco]是黄土高原的乡土珍贵树种,也是我国的主要造林树种之一。在干旱瘠薄,其它一些树种不能生长的地方,侧柏却能适应生长。一、侧柏造林的重要意义1.分布广,适应性强:侧柏属温带树种,原产我国北部及西北部,现已广泛栽培于我国南北各地。我省黄土高原各地均有天然生长和栽培,垂直分布于350～1800米间。它耐干旱瘠薄,抗逆性强,适应的生态幅度广,能耐45℃的绝对高温和-35℃的绝对低温,在年降水量300～1600毫米、年平均气温8～16℃的干冷及湿暖气候条件下均能正常生长。对土壤要求不严,在向阳干瘠的山梁沟坡均能良好生长,甚至在岩石缝隙处亦生长正常。在各种基岩
Platycladus orientalis (L.) Franco is a native species of the Loess Plateau and is also one of the major afforestation species in China. In infertile arid areas, where other tree species can not grow, Arborvitae can adapt to its growth. First, the important significance of Platycladus afforestation 1. Widely distributed, adaptable: Platycladus is a temperate tree species, native to northern and northwestern China, now widely cultivated in various parts of our country. Loess Plateau in our province all over the natural growth and cultivation, vertically distributed between 350 ~ 1800 meters. It is resistant to drought infertility, strong resistance, wide adaptation to the ecological range, the absolute high temperature of 45 ℃ and -35 ℃ absolute low temperature, the annual precipitation 300 ~ 1600 mm, the annual average temperature of 8 ~ 16 ℃ dry and wet Warm weather conditions can grow normally. Lack of strict requirements on the soil, in the sunny barren Shan Liang Gou slope can grow well, even in rock crevices also grow normally. In a variety of bedrock