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甘肃中部干旱半干旱地区生态脆弱,植被稀少,由于造林树种单一,结构不合理,从而严重制约着该区的林业经济可持续发展。本规程规范了甘肃中部干旱半干旱地区人工林造林密度、混交类型、苗木质量等造林技术标准。同时得出了侧柏胸径与基径线性方程,并编制了侧柏胸基径对照表。
Arid and semi-arid areas in central Gansu Province have fragile ecosystems and scarce vegetation. Due to the single afforestation species and the irrational structure, the sustainable development of forestry economy in this area is severely restricted. This Regulation regulates afforestation technical standards such as plantation density, mixed type, seedling quality and other plantations in arid and semi-arid areas of central Gansu. At the same time, the linear equations of DBH and DBH were obtained, and the table of DBH was compiled.