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- W2361397935 abstract "Regional human development may affect the regional climate and environment by many means,including land use change and green house gas emission.So there are at least two connection ways to link social-economic model with climate model when considering model integration.The authors focused on the first factor.By dynamically changing the low boundary conditions,the new generation of the Regional Integrated Environment Modeling System(RIEMS 2.0)was coupled with the Social Economic Dynamic Model which may reveal possible land use change in the future 50 years under different development scenarios.According to the data given from Social Economic Dynamic Model under high development and stable development scenarios,the single coupled model was used to study the possible regional climate change of China in the future shown by analysis of the regional precipitation spatial distribution and its evolution.The preliminary results show that RIEMS was sensitive to land use change.The spatial distribution of different regions and variation degree of those corresponding regions should be taken into account because the total impacts of the land use change on climate was not only limited to those regions where land use changed,but also to those regions where the land use didn't change at all.So it is necessary to integrate the social economic model into climate models when performing climate forecast for long time integration.The ecological construction engineering implemented including the Green-Great Wall construction engineering in the arid and semi-arid regions of west China,the natural forest conservation in northeast China and the west part of Inner Mongolia,also the replace farming with forestry and grass movement in north China etc will work positively on the eco-environment improvement,particularly will show as the increased precipitation in north China.The simulation also shows that the precipitation in north China will decrease and then speed up the aridification in this region,corresponding to the expand of the desert in the west China and the urbanization land in north China,the degeneration of forests in northeast China and the west part of Inner Mongolia,also the coverage of forests enlarged in south China etc.In north China,however,the co-effects of urban land increase with the forests coverage enlarged by irrigation will do positive effect to this region's precipitation.In the future 50 years,the rainfall in south China will decrease,while the rainfall will increase in north China around 2010 and the rainfall increase tendency most likely lasts to 2050,which benefits to the national economy and eco-environment because the water shortage is the critical factor in blocking economy growing in this area.Under stable social economical development scenery,the rainfall increment in north China is not as clear as those in high-speed scenery.Land use change will lead to the variation of surface parameters such as albedo and roughness length etc,and result in regional climate change because the equilibrium of water and heat transfer in the air-vegetation interface is changed." @default.
- W2361397935 created "2016-06-24" @default.
- W2361397935 creator A5037023585 @default.
- W2361397935 date "2008-01-01" @default.
- W2361397935 modified "2023-09-27" @default.
- W2361397935 title "Possible Impacts of Land Use Change on Regional Rainfall Associated with Orderly Human Activities" @default.
- W2361397935 hasPublicationYear "2008" @default.
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