About 300 million hectares of Central Asia cropped and rangelands are situated in arid zones under challenges of global climate change and increasing of desertification. Breeding strategy and rational land using extremely need environmental background and recommen-dations on response to increase drought. Overall aim: to determine C-sequestration/loss in important Central Asian rangelands natural and wheat agro-ecosystems. Environmental challenges of global climate change have been estimated from the next points. A major driver of climate change is the changing atmospheric CO2 concentration. Atmospheric CO2 depends on the balance between photosynthesis and release. The degree that the large areas of Central Asia are sinks or sources for CO2 needs clarifying. Management strategies nec-essary to enhance sustainability of Central Asia wheat ecosystems mean to combat deserti-fication, rational land using and breeding. Scientific results included integration of soil and plant components in ecosystem studies, new 'low-cost' approaches to estimation of ecosys-tem carbon fluxes, new modelling approaches to scaling up from single plants to ecosys-tems. Regional impacts are consisted of new data on C-stores and CO2 fluxes for Central Asia crop- and rangeland ecosystems, forecasting and operational ecosystem management database across Central Asia, establishment a Regional Research Network

Key words: ((I)Central Asia(/I), (I) mangement(/I), (I)ecosystems(/I), (I)global climate change(/I)