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首页> 外文期刊>Ecological indicators >The effects of different land use patterns on the microclimate and ecosystem services in the agro-pastoral ecotone of Northern China
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The effects of different land use patterns on the microclimate and ecosystem services in the agro-pastoral ecotone of Northern China

机译：北方农牧交错带不同土地利用方式对小气候和生态系统服务的影响

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The land use structure is extremely unstable and grassland is reclaimed as cultivated land at a large scale in the Northern Foot of Yinshan-Otindag Sandy Land Windbreak and Sand-Fixation Ecological Conservation Area, a representative region of the agro-pastoral ecotone of Northern China. To study the effects of land use patterns on the microclimate and ecosystem services, we selected five land use patterns by using a grid cell approach: pattern 1 (6.35% of the cultivated land, 86.98% of the grassland), pattern 2 (20.66% of the cultivated land, 71.14% of the grassland), pattern 3 (47.02% of the cultivated land, 44.76% of the grassland), pattern 4 (58.65% of the cultivated land, 31.49% of the grassland), and pattern 5 (70.55% of the cultivated land, 18.04% of the grassland) in 2010-2015. The results were as follows: (1) compared with pattern 1, the other four patterns had higher evapotranspiration (ET) and lower land surface temperature (LST), but no significant differences in albedo; (2) based on the partial correlation analysis, ET was the key driving factor in response to energy budget, and the global sensitivity analysis showed that LST had a strong independent influence on the ET, while LST, normalized differential vegetation index (NDVI), and albedo had strong interaction effects on the ET; (3) from June to August, the relationship between the proportion of cultivated land and ET was a logistic curve, and the inflection point was respectively 16.76%, 22.27% and 19.50%, respectively; (4) the losses of ecosystem service values (ESVs) had a significant trend in the whole ecological conservation area, and for five land use patterns, the order of losses was pattern 5 > pattern 4 > pattern 3 > pattern 2 > pattern 1; (5) pattern 5 lost the most ESVs, mainly due to three types of ecosystem services, which were soil conservation, climate regulation and waste regulation. This study provides references for fully understanding the ecological effects of land use change and helps to objectively evaluate ecological civilization construction in the agro-pastoral ecotone of Northern China.
机译：燕山-奥丁达格沙地防风固沙生态保护区是中国北方农牧交错带的代表区域，土地利用结构极其不稳定，草原被大规模开垦为耕地。为了研究土地利用方式对小气候和生态系统服务的影响，我们通过网格方法选择了五种土地利用方式：方式1（耕地的6.35％，草地的86.98％），方式2（20.66％）占耕地面积的71.14％），模式3（耕地的47.02％，草地的44.76％），模式4（耕地的58.65％，草地的31.49％）和模式5（ 2010-2015年耕地面积的70.55％，草原的18.04％。结果如下：（1）与模式1相比，其他4种模式具有较高的蒸散量（ET）和较低的地表温度（LST），但反照率无明显差异； （2）基于偏相关分析，ET是响应能源预算的关键驱动因素，整体敏感性分析表明，LST对ET有很强的独立影响，而LST是归一化植被指数（NDVI），反照率对ET有很强的相互作用作用； （3）6-8月，耕地比重与ET的关系呈对数关系，拐点分别为16.76％，22.27％和19.50％。 （4）在整个生态保护区中，生态系统服务价值的损失都有明显的趋势，在五个土地利用模式中，损失顺序依次为模式5>模式4>模式3>模式2>模式1。 （5）模式5损失最多的ESV，主要是由于生态系统服务的三种类型，即土壤保护，气候调节和废物调节。本研究为充分了解土地利用变化的生态影响提供了参考，有助于客观评价中国北方农牧交错带的生态文明建设。

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