Temporary wetland evolution in the upper Chinchiná river basin and its relationship with ecosystem dynamics
A study was performed regarding high Andean wetland degradation in a paramo area between the municipalities of Villamaria and Manizales, Colombia, by way of multi-temporal analysis, using satellite images from optical sensors, such as LANDSAT and RAPIDEYE, as well as images from RADAR sensors (ALOS PALSAR, SENTINEL 1), and analysis of anthropic and natural factors. As a result, the wetlands have begun a significant, linear decline with 67.9% water mirror loss in a nine-year period. There is also a direct relationship between wetland loss, and decreases in precipitation, and anthropization processes. It was determined, from the anthropic factor analysis, that that livestock and agricultural land use are those which cause the greatest negative effect on wetland decline in the studied area.
The specific geographic position and plateau climate endow Changdu area in Tibet unique tourist landscape and abundant eco-tourist resources. In detail, the area with sufficient sources of tourist possesses the basic conditions of reception, transportation and communication to develop eco-tourism. The paper introduces the background of eco-tourism development in the area and elaborates the principle and developmental scheme for tourist products.