tailieunhanh - Springer Old Growth Forests - Chapter 18

Chapter 18 Detecting Intact Forests from Space: Hot Spots of Loss, Deforestation and the UNFCCC Changes in forest cover have become recognised as an important global environmental issue. This chapter aims to synthesise what is known about areas and rates of forest-cover change in the tropics and boreal Eurasia from the 1990s onwards | Chapter 18 Detecting Intact Forests from Space Hot Spots of Loss Deforestation and the UNFCCC Frederic Achard Hugh Eva Danilo Mollicone Peter Popatov Hans-Jurgen Stibig Svetlana Turubanova and Alexey Yaroshenko Introduction Changes in forest cover have become recognised as an important global environmental issue. This chapter aims to synthesise what is known about areas and rates of forest-cover change in the tropics and boreal Eurasia from the 1990s onwards based on data compiled from expert opinion and earth observation technology. Since the early 1990s changes in forest area can be measured with confidence from space from the global to the regional scale Mollicone et al. 2003 . Forest-cover change including deforestation at the regional scale is the process of land-cover change that is most frequently measured. During the 1990s rates of forestcover change were much higher in the tropics than in other parts of the world. In particular the Amazon basin and Southeast Asia contain a concentration of deforestation hotspots and more regional remote sensing studies cover the tropics than boreal zones. However forest degradation in Eurasia related mostly to unsustainable logging activities or increases in fire frequency has been growing in recent years. In addition to reviewing the results from Earth observation studies this chapter presents a potential accounting mechanism in the context of the United Nations Framework Convention on Climate Change UNFCCC question of reducing emissions from deforestation in developing countries UNFCCC 2006 which builds on recent scientific achievements related to the estimation of tropical deforestation rates from Earth observation technology. Monitoring of Forest Areas from the Global to the Regional Scale using Satellite Imagery Combined with ground measurements remote sensing plays a key role in determining the loss of forest cover. Technical capabilities have advanced since the early 1990s and operational forest monitoring

• Lâm nghiệp
• kĩ thuật trồng trọt
• kĩ thuật trồng rừng
• tài nguyên rừng
• rừng già nhiệt đới
• khai thác và bảo vệ rừng
• kỹ thuật trồng trọt
• thắc mắc về trồng trọt
• tài liệu trồng trọt
• phương pháp trồng cây
• kĩ thuật chăm sóc hoa
• giáo trình trồng trọt
• kĩ thuật nhân giống hoa
• tài liệu trồng hoa
• Giáo trình nông nghiệp
• kinh nghiệm trồng trọt
• kỹ năng nuôi trồng
• tài liệu nuôi trồng
• kỹ thuật gieo giống
• bệnh hại cây trống
• bệnh hại cây trồng
• kiến thức nhà nông
• kiến thức trồng trọt
• kĩ thuật trồng lạc
• trồng lạc có che phủ nilon
• công nghệ thâm canh
• thời vụ gieo trồng
• kĩ thuật canh tác
• chăm sóc cây trồng
• cải tạo đất
• Kỹ Thuật Trồng đậu tương
• Cây Đậu Tương
• Phạm Văn Thiều
• kĩ thuật chăn nuôi
• lợi ích của đậu tương
• Kỹ thuật trồng và chăm sóc cây nhãn
• Trần Thế Tục
• Kỹ thuật trồng nhãn
• chăm sóc cây nhãn
• lợi ích cây nhãn
• cáh trồng rau mầm
• Tài liệu nghiệp
• Trồng trọt
• Trồng Rau
• Rau trái vụ
• Rau mầm