通过对各土类农田防护林林分蓄积生长量和土壤生产力的综合分析，把河西走廊立地级划分为四类。
Site level in Hexi-corridor area was divided into 4 types by comprehensive analyzing the growing stock of stand and soil productivity of all kinds of farmland shelterbelt.
通过对各土类农田防护林林分蓄积生长量和土壤生产力的综合分析，把河西走廊立地级划分为四类。
Site level in Hexi-corridor area was divided into 4 types by comprehensive analyzing the growing stock of stand and soil productivity of all kinds of farmland shelterbelt.
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