The tropical montane cloud forest is one of the most biodiverse ecosystems on Earth and is one of the areas most threatened by anthropogenic disturbance. This study assessed the temporal impact on soil properties (organic carbon, total nitrogen, cation exchange capacity, bulk density) following establishment of native tree species in two degraded tropical montane cloud forest areas with different soil types and land-use intensities in south-east Mexico. In Pueblo Nuevo, Chiapas, Pinus chiapensis and Alnus spp. were established at two sites with humic Nitisols with low and moderate disturbance levels, respectively. In Xalapa, Veracruz, plum pine (Podocarpus matudae), American hornbeam (Carpinus caroliniana), Oaxaca walnut (Juglans pyriformis Liebm.), and sweetgum (Liquidambar styraciflua) were established on a grassland-covered humic Andosol with a high level of disturbance. After 16 years, soil properties had generally improved, although in the initial years after planting, the values declined, indicating a possible negative impact because of disturbance during tree establishment. Land-use intensity prior to tree establishment influenced the level of recovery in soil properties. The Pueblo Nuevo sites, with low to moderate disturbance levels, regained soil quality faster than the highly disturbed Xalapa site, despite better initial soil quality in the latter.

中文翻译：

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本地植树对热带山地云林土壤恢复的影响

山地热带云雾森林是地球上生物多样性最高的生态系统之一，也是人为干扰最严重的地区之一。这项研究评估了在东南部两个土壤类型和土地利用强度不同的退化热带山地云雾森林地区建立原生树种后，对土壤特性（有机碳，总氮，阳离子交换能力，容重）的时间影响。墨西哥。在普韦布洛，恰帕斯，松chiapensis和桤木属。分别在两个具有低和中度干扰水平的腐殖性尼替舒尔的地点建立。在哈拉帕，韦拉克鲁斯州，李子松（Podocarpus matudae），美国角树（Carpinus caroliniana），瓦哈卡核桃（在一片草皮覆盖的腐殖质Andosol上，建立了胡桃木（Juglans pyriformis Liebm。）和甜木（枫香）。16年后，土壤性质总体上有所改善，尽管在播种后的最初几年中，土壤含量有所下降，这表明由于树木生长过程中的干扰可能造成负面影响。建立树木之前的土地利用强度影响了土壤特性的恢复水平。具有低至中度扰动的Pueblo Nuevo站点比受到高度扰动的Xalapa站点更快地恢复了土壤质量，尽管后者的初始土壤质量更高。