不知道是不是网络原因，一直下载失败~郁闷的~
第一篇
【题目】Measurement of aerosol particles, gases and flux radiation in the Pico de Orizaba National Park, and its relationship to air pollution transport
【链接】http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VH3-4G82Y84-1&_user=1553337&_coverDate=07%2F31%2F2005&_alid=1292671748&_rdoc=1&_fmt=high&_orig=search&_cdi=6055&_sort=r&_st=4&_docanchor=&_ct=48&_acct=C000053666&_version=1&_urlVersion=0&_userid=1553337&md5=b32a786ccf74378992a94e4867ea2f0a
第二篇
【题目】Air pollution vulnerability of 22 midwestern parks
【链接】http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WJ7-4DJ4429-X&_user=1553337&_coverDate=12%2F31%2F1995&_alid=1292671748&_rdoc=2&_fmt=high&_orig=search&_cdi=6871&_sort=r&_st=4&_docanchor=&_ct=48&_acct=C000053666&_version=1&_urlVersion=0&_userid=1553337&md5=7dff2db133d26d1f4988239d8cc08835
第三篇
【题目】New international long-term ecological research on air pollution effects on the Carpathian Mountain forests, Central Europe
【链接】http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V7X-47NF4WW-4&_user=1553337&_coverDate=06%2F30%2F2003&_alid=1292671748&_rdoc=13&_fmt=high&_orig=search&_cdi=5854&_sort=r&_st=4&_docanchor=&_ct=48&_acct=C000053666&_version=1&_urlVersion=0&_userid=1553337&md5=b882979d7c3535b7ef455ef8173a9e8d
第四篇
【题目】Influence of ship emissions on air quality and input of contaminants in southern Alaska National Parks and Wilderness Areas during the 2006 tourist season
【链接】http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VH3-4YC80YB-6&_user=1553337&_coverDate=04%2F30%2F2010&_alid=1292671748&_rdoc=16&_fmt=high&_orig=search&_cdi=6055&_sort=r&_st=4&_docanchor=&_ct=48&_acct=C000053666&_version=1&_urlVersion=0&_userid=1553337&md5=bc244f1fceaeb9af2f0fba94f1beb601