认识到在联合国教育、科学及文化组织宣布的 1965-1974 年国际水文十年期间首次审议了盘点全球现有的常年冰雪总量的必要性，
Recognizing that the need for a worldwide inventory of existing perennial ice and snow masses was first considered during the International Hydrological Decade, declared by the United Nations Educational, Scientific and Cultural Organization for the period 1965–1974,