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Regional fire monitoring and NASA MODIS fire products characterization using global in dry lands of Central Asia 被引量:5
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作者 Tatiana V. LOBODA Louis GIGLIO Luigi BOSCHETTI Christopher O. JUSTICE 《Frontiers of Earth Science》 SCIE CAS CSCD 2012年第2期196-205,共10页
Central Asian dry lands are grass- and desert shrub-dominated ecosystems stretching across Northern Eurasia. This region supports a population of more than 1 00 million which continues to grow at an average rate of 1.... Central Asian dry lands are grass- and desert shrub-dominated ecosystems stretching across Northern Eurasia. This region supports a population of more than 1 00 million which continues to grow at an average rate of 1.5% annually. Dry steppes are the primary grain and cattle growing zone within Central Asia. Degradation of this ecosystem through burning and overgrazing directly impacts economic growth and food supply in the region. Fire is a recurrent disturbance agent in dry lands contributing to soil erosion and air pollution. Here we provide an overview of inter-annual and seasonal fire dynamics in Central Asia obtained from remotely sensed data. We evaluate the accuracy of the Moderate Resolution Imaging Spectroradiometer (MODIS) global fire products within Central Asian dry lands and use these products to characterize fire occurrence between 2001 and 2009. The results show that on average -15 million ha of land burns annually across Central Asia with the majority of the area burned in August and September in grasslands. Fire is used as a common crop residue management practice across the region. Nearly 89% of all burning occurs in Kazakhstan, where 5% and 3% of croplands and grasslands, respec- tively, are burned annually. 展开更多
关键词 Moderate Resolution Imaging spectroradi-ometer (MODIS) fire Central Asia dry lands
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