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首页> 外文期刊>Frontiers of earth science >Vegetation and soil wind erosion dynamics of sandstorm control programs in the agro-pastoral transitional zone of northern China
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Vegetation and soil wind erosion dynamics of sandstorm control programs in the agro-pastoral transitional zone of northern China

机译：北方农业田园过渡区沙尘暴控制植物及土壤风蚀动态

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摘要

To combat soil erosion and desertification, large-scale sandstorm control programs have been put in place since 2000 in the agro-pastoral transitional zone of northern China. Vegetation dynamics as well as soil wind erosion control effects are very important for assessing the ecological success of sandstorm control programs in China. However, no comprehensive evaluation of vegetation dynamics and soil wind erosion control effects in this region has been achieved. In this study, we illustrate the vegetation and soil wind erosion dynamics of sandstorm control programs in the northern Shanxi Province using remote sensing data and soil wind erosion models. There was a significant increase in vegetation cover for 63.59% of the study area from 2001 to 2014 and a significant decrease for 2.00% of the study area. The normalized difference vegetation index (NDVI) showed that the largest increase occurred in autumn. Soil wind erosion mass decreased from 20.90 million tons in 2001 to 7.65 million tons in 2014. Compared with 2001, the soil wind erosion moduli were reduced by 43.05%, 36.16%, and 62.66% in 2005, 2010, and 2014, respectively. Spatially, soil wind erosion in most of the study area was alleviated between 2001 and 2014. The relationship between NDVI and soil wind erosion mass showed that the increased vegetation coverage reduced the soil wind erosion mass. In addition, wind was the main driving force behind the soil wind erosion dynamics. The results indicate that the vegetation coverage has increased and soil wind erosion mass has been reduced following the implementation of the sandstorm control programs. However, the ecological effects of the sandstorm control programs may vary over different periods. While the programs appear to be beneficial in the short term, there may be unintended consequences in the long term. Research on the sustainability of the ecological benefits of sandstorm control programs needs to be conducted in the future.
机译：为了打击土壤侵蚀和荒漠化，自2000年以来，在中国北方农业田园过渡地区以来已经建立了大规模的沙斯风暴控制计划。植被动态以及土壤风蚀控制效应对于评估我国沙尘暴控制计划的生态成功非常重要。然而，已经实现了该地区植被动力学和土壤风蚀控制效应的全面评价。在这项研究中，我们使用遥感数据和土壤风蚀模型说明了山西省北部沙尘暴控制计划的植被和土壤风腐蚀动态。植被覆盖率从2001年至2014年的研究面积占据了63.59％，占研究区的2.00％显着下降。归一化差异植被指数（NDVI）表明，秋季最大的增加发生。土壤风蚀大量从2001年的20.9百万吨减少到2014年的765万吨。与2001年相比，土壤风蚀模量分别减少了43.05％，36.16％和62.66％，分别为2010年，2014年。在空间上，大多数研究区域的土壤风蚀在2001年至2014年之间。NDVI与土壤风蚀的关系表明，增加的植被覆盖率降低了土壤风蚀质量。此外，风是土壤风腐蚀动态背后的主要驱动力。结果表明，在实施沙尘暴控制计划后，植被覆盖率增加，土壤风蚀块已减少。然而，沙尘暴控制计划的生态效应可能在不同的时期不同。虽然这些计划在短期内似乎有益，但长期可能有意外后果。未来需要进行沙尘暴控制方案生态效益的可持续性研究。

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