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Assessing the impact of restoration-induced land conversion and management alternatives on net primary productivity in Inner Mongolian grassland, China

机译：评估恢复引起的土地流转和管理方式对中国内蒙古草原净初级生产力的影响

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摘要

To address severe grassland degradation problems, China has been implementing a number of national restoration programs, whose significant environmental effect has attracted the attention of many researchers. In this paper, land use and cover change (LUCC) in the Inner Mongolia grassland and the consequent change in net primary productivity (NPP) were studied by combining the land use data of the study area for 2001 and 2009 derived from the MODIS global land cover product and the CASA (Carnegie-Ames-Stanford Approach) model driven with MODIS-NDVI data. The results indicate that the area of Inner Mongolia grassland had a net increase of 77,993 km~2 during the study period, which was mainly attributed to the conversion from desert and cropland. The total NPP of Inner Mongolia grassland increased by 29,432.71 Gg C yr~(-1) during 2001-2009, of which the human activities and climate change were responsible for 80.23% and 19.77%, respectively. Land conversion and improved management increased grassland NPP directly, and the ecological restoration conducted by large-scale conservation programs could be the intrinsic driving force for this change.
机译：为了解决严重的草地退化问题，中国已经实施了许多国家恢复计划，其重大的环境影响引起了许多研究人员的关注。本文通过结合MODIS全球土地研究区2001年和2009年的土地利用数据，研究了内蒙古草原的土地利用和覆盖变化（LUCC）以及随之而来的净初级生产力（NPP）的变化。封面产品和由MODIS-NDVI数据驱动的CASA（卡内基-艾姆斯-斯坦福方法）模型。结果表明，研究期内内蒙古草地面积净增加77,993 km〜2，这主要归因于荒漠和农田的转化。 2001-2009年，内蒙古草原的总NPP增加了29,432.71 Gg C yr〜（-1），其中人类活动和气候变化分别占80.23％和19.77％。土地转用和管理的改善直接增加了草原的核电厂，而大型养护计划进行的生态恢复可能是这种变化的内在动力。

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