河西二白杨农田防护林立地指数表的编制

Construction of site index table of Gansu poplar farmland shelter-belt in Hexi corridor

通过对河西走廊同一温带蒙-甘气候类型区的绿洲灌耕土、绿洲半潮灌耕土、绿洲潮灌耕土、绿洲盐化灌耕土4个土壤类型的二白杨农田防护林标准地调查,编制出河西走廊农田防护林带立地指数表,立地指数划分为6个等级,经检验达到了要求,可直接应用到林业生产实践中。

The site index of farmland shelterbelt has been established through investigating the standard plot of Populus gansuensis farmland shelterbelt in Hexi corridor. These Populus gansuensis grew in the oasis irrigation cultivating soil, oasis semi-irrigation cultivating soil, oasis salinied irrigation cultivated soil or oasis aquic irrigatation cultivated soil, which is at the united temperate zone under Gansu-Menggu climatic type. The site index is divided into six grades, and through testing, the result meets the standard area data and can be applied to forestry practice directly.