首页> 外文期刊>Revista Mexicana de Ciencias Pecuarias >Efecto en la erosión hídrica del suelo en pastizales y otros tipos de vegetación por cambios en el patrón de lluvias por el calentamiento global en Zacatecas, México
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Efecto en la erosión hídrica del suelo en pastizales y otros tipos de vegetación por cambios en el patrón de lluvias por el calentamiento global en Zacatecas, México

机译:全球变暖在墨西哥全球变暖在雨雨范围内雨水和其他类型植被影响土壤侵蚀的影响

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Temperature and precipitation anomalies were used to assess it for the 2021-2080 period, based on an assembly of 11 global circulation models, in order to generate future temperature and precipitation maps based on the reference climatology of the 1961-2010 period. In the state of Zacatecas, the grassland area has current average erosion values of approximately 16.3 t/ha, estimated using the RUSLE model. In other types of vegetation or land use as shrubs, forest or agricultural areas, values are even higher (50.74, 65.99, 161.39, t/ha/yr, respectively). The application of the ensemble model in RCP 4.5 and RCP 8.5 indicates that there will be an increase in temperature and a decrease in rainfall. In a scenario with less effect of global warming (SPC 4.5), a gradual reduction of grassland water erosion is expected, compared to 2010 of 2.3 % in 2030 (15.67 t/ha/yr) to 5.8 8% (15.18 t/ha /yr) in 2070. In the same period up to 2070, the rate of decline of water erosion is 14.1 kg/ha/yr. RCP 8.5, which was designed for a condition of continuous emission of greenhouse gases, exhibits even greater reduction values and for 2070 it establishes a decrease of 13.0 %, with an erosion reduction rate of 31.5 kg/ha/yr. Other types of vegetation and land use showed the same tendency to decrease, although at higher rates. The scenario of water erosion reduction seems favorable; however, an increase in soil loss values due to wind erosion in the arid regions of northern Zacatecas is not ruled out. The assessment of levels of water erosion contributes to the ordering of land use to reduce levels of degradation and desertification.
机译:基于11个全局循环模型的组装,温度和降水异常用于评估2021-2080期间,以产生基于1961-2010期间的参考气候学的未来温度和降水图。在萨卡特卡斯的状态下,草地地区具有约16.3吨/公顷的电流平均侵蚀值,估计使用风险模型。在其他类型的植被或土地使用作为灌木,森林或农业领域,价值观甚至更高(50.74,65.99,161.39,T / HA / Yr)。 Enemble模型在RCP 4.5和RCP 8.5中的应用表明,温度的增加和降雨量减少。在全球变暖效果较小的情况下,预期草地水侵蚀的逐步减少,而2010年2030年(15.67吨/千)至5.88%(15.18吨/公顷/年)在2070年。在2070年的同期,水腐蚀的下降率为14.1千克/公顷/年。 RCP 8.5设计用于温室气体的连续排放的条件,表现出更大的减少值和2070,它建立了13.0%的减少,侵蚀降低率为31.5千克/千。尽管处于更高的速率,但其他类型的植被和土地使用表现出相同的降低趋势。水腐蚀的情况似乎有利;然而,没有排除北崎扎卡加斯的干旱地区导致的土壤损失值增加。对水平水平的评估有助于降低土地利用的排序,以减少降解和荒漠化水平。

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