应美国南方大学的邀请,由全国绿化委员会办公室组成的国土绿化考察团,于2002年12月9日至26日赴美国考察。主要考察了路易斯安娜州国土绿化,纽约森林公园建设,华盛顿、旧金山、洛杉机、费城城市绿化和古树名木管护情况。访问了美国农业部林务局、农业部科研教育推广局、路易斯安娜州农林厅、路易斯安娜州州立大学和南方大学。 At the invitation of the Southern University of the United States, the delegation of the National Greening and Landscaping Investigation Team composed of the offices of the National Greening Committee visited the United States from December 9 to December 26, 2002. The main study of the Louisiana afforestation, New York Forest Park building, Washington, San Francisco, Los Angeles, Philadelphia city green and old trees management situation. Visited the USDA Forest Service, the USDA Extension and Research Office, the Louisiana Department of Agriculture and Forestry, the Louisiana State University and Southern University.