tailieunhanh - AQUATIC EFFECTS OF ACIDIC DEPOSITION - CHAPTER 10

Trường hợp nghiên cứu: Adirondack Park, NY 10,1 Bối cảnh và các dữ liệu có sẵn Khu vực núi Adirondack của New York là một trong những khu vực nghiên cứu mạnh mẽ nhất của thế giới đối với ảnh hưởng của lắng đọng axit về thủy sản. Lắng đọng nghiên cứu có tính axit ảnh hưởng trong Adirondacks đã đóng một vai trò quan trọng trong nhiều các lĩnh vực tiến bộ khoa học lớn trong thập kỷ qua. Vì lý do đó, kết quả của nghiên cứu tiến hành trong khu vực Adirondack được thảo luận rộng rãi trong suốt. | 10__ Case Study Adirondack Park NY Background and Available Data The Adirondack Mountain region of New York is one of the most intensively studied regions of the world with respect to the effects of acidic deposition on aquatic resources. Acidic deposition effects research in the Adirondacks has played an important role in many of the areas of major scientific advancement during the last decade. For that reason the results of research conducted in the Adirondack region are widely discussed throughout this book. These include improved understanding of N cycling and effects results of surface water quality monitoring efforts extensive model testing paleolim-nological inferences of both long- and short-term acidification responses and interactions between land use and acidification processes. This chapter is not intended to summarize current understanding of acidification sensitivities of Adirondack surface waters or the effects to date of S-driven acidification. These topics have been thoroughly discussed by Sullivan 1990 Driscoll et al. 1991 Baker et al. 1990b and others. Rather the attempt here is to summarize some of the recent findings that relate to the major topics of this book. The focus of this chapter is largely on research in which the author has been involved personally. However there has also been extensive research conducted by many other scientists in the Adirondack Mountains in recent years. Many aspects of their research are discussed and referenced in other chapters of this book. The region is mountainous with numerous lakes many of which have low concentrations of base cations and are therefore susceptible to acidification from addition of mineral acid anions such as SO42- and NO3- and naturally occurring organic acid anions Driscoll et al. 1991 . Elevations range from about 30 m near Lake Champlain to 1630 m in the High Peaks area of the northeastern Adirondacks. The highlands region extends to the north west and