Retrieval of key eco-hydrological parameters for cold and arid regions
نویسندگان
چکیده
Retrieval of eco-hydrological variables/parameters from the orld’s cold and arid regions using remote sensing is more chalenging compared to other regions, and less research work on uantitative remote sensing has been carried out in these specific egions. This is because: (1) Cold and arid regions are most likely o be located in theworld’s remote and relatively under-developed reas, where conventional in situ observations aremore scarce and oredifficult tobe carriedout so that thevalidationof remote sensng is more difficult. (2) Terrain in cold and arid regions is usually ore complex and landscape is more fragmented and heterogeeous. The special issue aims to address these challenges. The papers appeared in this special issue use two regions as the ase study areas. Both of them are located inwest China, where one f most diverse and fragile environments exists in the world, with he Qinghai-Tibetan plateau elevated in the south and high mounains, plateaus, deserts, and oases interspersed in the north. The rst case study area is the Qinghai-Tibetan plateau (QTP), the soalled world’s third pole. QTP is a cold area, where the cryosphere ominates the natural environment and changes rapidly in recent ears. Another case study area is the Heihe river basin, the secnd largest and a very typical inland river basin (endorheic basin) n northwest China, where mountain cryosphere and the world’s riest area coexist. Environmental change in China’s inland river asins is controlled by water resource availability, which is further nfluenced by both climate change and human activities such as arming and grazing.
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ورودعنوان ژورنال:
- Int. J. Applied Earth Observation and Geoinformation
دوره 17 شماره
صفحات -
تاریخ انتشار 2012