ELTS(The English Language TestingService)考试是英国文化协会和剑桥大学地方考试委员会经过五年时间设计的最新考试方法,主要用来测试海外留学英国考生的英语能力。我国自1984年秋,由原教育部与英国文化协会共同举办(?)ELTS 考试的...ELTS(The English Language TestingService)考试是英国文化协会和剑桥大学地方考试委员会经过五年时间设计的最新考试方法,主要用来测试海外留学英国考生的英语能力。我国自1984年秋,由原教育部与英国文化协会共同举办(?)ELTS 考试的培训以来,参加该项考试的人数逐渐增加,85年已达两百多名。随着中英文化关系的发展,展开更多
This paper depicted the physiographic landscape features and natural vegetation situation of study area (the eastern Jilin Province), and expatiates the definition, basic characters and its development of Ecological L...This paper depicted the physiographic landscape features and natural vegetation situation of study area (the eastern Jilin Province), and expatiates the definition, basic characters and its development of Ecological Land Classification (ELC). Based on the combination of relief map, satellite photography for study area and vegetation inventory data of 480 sample sites, a 5-class and a 15-class ecological land type map was concluded according to 4 important factors including slope, aspect, vegetation and elevation. Ecological Classification System (ECS) is a method to identify, characterize, and map ecosystems. The Ecological Land Type (ELT) was examined and applied initially in eastern Jilin Province.展开更多
文摘ELTS(The English Language TestingService)考试是英国文化协会和剑桥大学地方考试委员会经过五年时间设计的最新考试方法,主要用来测试海外留学英国考生的英语能力。我国自1984年秋,由原教育部与英国文化协会共同举办(?)ELTS 考试的培训以来,参加该项考试的人数逐渐增加,85年已达两百多名。随着中英文化关系的发展,
基金supported by Chinese Academy of Sciences"100 people’project and the Open Research Station of Changbai Mountain Forest Ecosystem
文摘This paper depicted the physiographic landscape features and natural vegetation situation of study area (the eastern Jilin Province), and expatiates the definition, basic characters and its development of Ecological Land Classification (ELC). Based on the combination of relief map, satellite photography for study area and vegetation inventory data of 480 sample sites, a 5-class and a 15-class ecological land type map was concluded according to 4 important factors including slope, aspect, vegetation and elevation. Ecological Classification System (ECS) is a method to identify, characterize, and map ecosystems. The Ecological Land Type (ELT) was examined and applied initially in eastern Jilin Province.
