美、加两国的生态环境无疑是世界上最好的国家之一。此次考察感触颇深,生态环境之好坏大凡取决于三个方面,一是自然决定,地理、气候条件造就;二是人为影响,人类活动所致;三是自然和人类相互作用,不断循环而成。得天独厚的丰沛资源,造就了令人羡慕的自然环境。我们此次美国、加拿大之行,访问7个城市,14天时间,在美、加边境上大、小飞机乘了10次。虽因每个城市停留时间不长而留有遗憾;但却因有机会 The ecological environment of the United States and Canada is undoubtedly one of the best countries in the world. The investigation is quite deep and the ecological environment is good or bad depends on three aspects, one is the natural decision, geographical, climatic conditions create; the second is caused by human influence, human activities; the third is the interaction between nature and human, continuous cycle And into. Blessed with rich resources, creating an enviable natural environment. In this U.S.-Canada trip, we visited seven cities and spent 14 days in the United States and Canada on the border. The plane flew 10 times. Although there is not enough time to stay in each city, I regret; but because of the opportunity