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[1]LI Jiaxiu,CHEN Yaning,LIU Zhihui,et al.Variation of Mountain-Oasis-Desert (MOD) System and Its Response to Climate Change and Human Activities in Irtysh River Basin[J].Research of Soil and Water Conservation,2018,25(02):250-256,263.

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Variation of Mountain-Oasis-Desert (MOD) System and Its Response to Climate Change and Human Activities in Irtysh River Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 02 Page number: 250-256,263 Column: Public date: 2018-04-03

Title:: Variation of Mountain-Oasis-Desert (MOD) System and Its Response to Climate Change and Human Activities in Irtysh River Basin

Author(s):: LI Jiaxiu^1,2,3, CHEN Yaning², LIU Zhihui¹, LI Zhi²; 1. College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China;
2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China

Keywords:: MOD system; climate change; landscape pattern

CLC:: P463;TP79

DOI:: -

Abstract:: Remote sensing images of 3 typical regions in the Irtysh River basin and the related weather data were used to investigate the variation characteristic of mountain-oasis-desert (MOD) system and its response to climate change and human activities. The results show that:(1) the whole study area has becoming warm and humid, and the water-heat conditions tend to be more healthy development, but the changes of temperature and precipitation are not synergy, and great differences exist among subsystems; (2) affected by human activities, the year of 1999 was the turning point of landscape pattern in the study area, landscape structure, patch shape and quantity increased to some extent in this year; (3) each subsystem has distinctive characteristics:the mountain subsystem is less affected by human activities, mainly affected by climate change, after 1979, the water and bear land areas slight increased, nature vegetation decreased and cultivated land increased first and then decreased; the oasis subsystem is both affected by climate and human activities greatly, the nature vegetation area has decreased since 1999, while cultivated land area has increased greatly, which showed that human cultivation obviously changed the land type in this region; the desert subsystem has the highest humidifying rate, but its structure is simple, salinization is severe, wasteland area has shrinked remarkably since 1979 due to the influence of oasis expansion.

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