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首页> 外文期刊>Ecological Modelling >Land use/cover change and regional climate change in an arid grassland ecosystem of Inner Mongolia, China
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Land use/cover change and regional climate change in an arid grassland ecosystem of Inner Mongolia, China

机译：中国内蒙古内蒙古干旱草原生态系统的土地利用/覆盖变化与区域气候变化

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Conserving and protecting the arid grassland ecosystem in Inner Mongolia under climate change requires large-scale observation and analysis. The interaction between land use/cover change (LUCC) and the regional climate change in this study area is addressed using macroscopic monitoring with remote sensing observation and analysis. The area's LUCC was examined to demonstrate the structural dynamics of the land surface in the past from 1988 to 2011. The results of LUCC showed that agricultural land, high coverage grassland, and low coverage grassland were the dominant land cover types taking approximately 65.3% in total. Developed land constantly increased from 1.4% to 12.7% during the study period due to rapid urbanization in the area. According to the land surface energy balance equations, the four key variables of the regional climate system, (1) normalized difference vegetation index (NDVI), (2) albedo (a), (3) surface temperature (Ts), and (4) evapotranspiration (ET), were calculated for their spatial-temporal pattern dynamic and also to perform a correlation analysis to explore the structure-function relationship in the land-atmosphere interaction. The results illustrated that vegetation degradation caused an increase in albedo by approximately 5% on average by 2007 as attributed to the cumulative effects of the drought since 2003. ET also declined to around 0.8 cm/day in 2007. The correlation analysis results suggested the human land use such as development and agricultural activities made the surface boundary layer less responsive in the land-atmosphere interaction. (C) 2016 Elsevier B.V. All rights reserved.
机译：在气候变化下保护和保护内蒙古的干旱草原生态系统需要大规模观察和分析。使用宏观监测与遥感观察和分析，使用宏观监测来解决土地使用/覆盖变化（LUCC）和区域气候变化之间的相互作用。该地区的LUCC被研究以展示过去1988年至2011年土地面积的结构动态。LUCC的结果表明，农业用地，高覆盖草原和低覆盖草原是主要的陆地覆盖类型，占约65.3％全部的。由于该地区的快速城市化，所发达的土地在研究期间的1.4％增加到12.7％。根据地表能量平衡方程，区域气候系统的四个关键变量，（1）归一化差异植被指数（NDVI），（2）Albedo（A），（3）表面温度（TS），以及（4蒸散（ET），用于其空间 - 时间图案动态，并且还进行相关分析以探讨土地气氛交互中的结构功能关系。结果表明，自2003年以来，2007年植被降解平均截至2007年的累积效应约为5％。ET也涉及2007年的累计效应约为0.8厘米/天。相关分析结果表明人类建议发展和农业活动等土地利用使地表边界层在土地 - 大气相互作用中响应不太响应。 （c）2016年Elsevier B.v.保留所有权利。

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