Abstract
The arid regions of Central Asia are one of the most representative arid regions in the northern mid-latitudes, which includes Kazakhstan, Uzbekistan, Kyrgyzstan, Turkmenistan, Tajikistan and Xinjiang in China, with a total area of 6 million km2, more than 80% of the world’s temperate deserts are located and has formed a unique temperate desert landscape pattern. Studies have shown that in the past three decades, the temperature in Central Asia rises by 0.4°C per decade, which is significantly higher than the average of the northern hemisphere and surrounding areas (0.3°C / 10a). During the end 30 years in the late 20th century, severe drought occurred in the northwestern region of Central Asia, while precipitation in Xinjiang in the eastern part of Central Asia increased significantly. The precipitation in this region showed strong spatial heterogeneity and significant chronological fluctuations.
Highlights
The effects of climate change and human activities on the Earth’s systems, surface landscapes, and biogeochemical cycles are dramatically changing the response and adaptation mechanisms of the global ecosystem
A correct and comprehensive understanding of the carbon cycle of terrestrial ecosystems is an important guarantee for predicting the impact of future climate change on human society and maintaining the sustainable development of ecosystems
The results show that southern Xinjiang is an important area of ecological fragility in Central Asia, and its ecological security faces the challenge of climate change
Summary
The effects of climate change and human activities on the Earth’s systems, surface landscapes, and biogeochemical cycles are dramatically changing the response and adaptation mechanisms of the global ecosystem. In order to explore the spatial pattern of the carbon storage response of the Central Asian ecosystem to climate change, Li et al [34] used the carbon pool difference between 2011 and 1979 as an indicator, and the positive value represented the increase of carbon pool during the study period [34]. During 19792011, the increase in precipitation in northern Xinjiang reduces the threat of drought and promotes plant growth in the region [34]
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