Few studies have comprehensively evaluated the effect of changing land use on the soil quality in the Ecuadorian Amazon region that is subject to continued deforestation processes. This study evaluated the influence of different types of land use on soil quality using an integrated soil quality index (SQI) with a minimum set of indicators, based on 140 soil samples from 7 land use types, in seven productive distinct landscapes in Pastaza Province, Ecuador. The land use type evaluated was Chakra_A, Chakra_B, Chakra_C, Cattle_A, Cattle_B, Cattle_C, and Forest. Land use type had significant effects on soil properties and thus on soil quality. SQI was developed by using, AP, Zn, TOC, BD, and LL; AP and Zn had highest weighting values (0.38), which indicated that these indicators contributed the most to final SQI. In general, the SQI varied significantly depending on the type of land use and two groups were established: the first categorized as of moderate quality with mean SQI values of 0.45, 0.44, and 0.41 for Chakra_A, Forest and Chakra_B, respectively; while the second group registered average SQI values of 0.33, 0.33, 0.32, and 0.30 for Chakra_C, Cattle_C, Cattle_A and Cattle_B, respectively, considered of low quality. The methods used are applicable to the study of changes in soil properties as functions of agroforestry systems, which are generated by changes in land use in similar landscape of the Ecuadorian Amazon.

中文翻译：

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厄瓜多尔的安第斯-亚马逊山麓丘陵的七个生产性景观的土壤质量指数

很少有研究全面评估改变土地使用对厄瓜多尔亚马逊地区土壤质量的影响，该地区遭受了持续的森林砍伐。这项研究基于帕斯塔萨省7个生产性景观中来自7种土地利用类型的140个土壤样本，使用具有最少指标集的综合土壤质量指数（SQI），评估了不同土地利用类型对土壤质量的影响，厄瓜多尔 评估的土地利用类型为Chakra_A，Chakra_B，Chakra_C，Cattle_A，Cattle_B，Cattle_C和森林。土地利用类型对土壤性质具有重要影响，因此对土壤质量也具有重要影响。通过使用AP，Zn，TOC，BD和LL开发SQI；AP和Zn的权重值最高（0.38），这表明这些指标对最终SQI的贡献最大。一般来说，SQI随土地利用类型的不同而有很大差异，并建立了两个类别：第一个类别为中等质量，Chakra_A，Forest和Chakra_B的平均SQI值分别为0.45、0.44和0.41；而第二组的Chakra_C，Cattle_C，Cattle_A和Cattle_B的平均SQI值分别为0.33、0.33、0.32和0.30，被认为是低质量的。所使用的方法适用于研究土壤性质随农林业系统变化的情况，这些变化是由厄瓜多尔亚马逊河类似景观中土地利用的变化产生的。而第二组的Chakra_C，Cattle_C，Cattle_A和Cattle_B的平均SQI值分别为0.33、0.33、0.32和0.30，被认为是低质量的。所使用的方法适用于研究土壤性质随农林业系统变化的情况，这些变化是由厄瓜多尔亚马逊河类似景观中土地利用的变化产生的。而第二组的Chakra_C，Cattle_C，Cattle_A和Cattle_B的平均SQI值分别为0.33、0.33、0.32和0.30，被认为是低质量的。所使用的方法适用于研究土壤性质随农林业系统变化的情况，这些变化是由厄瓜多尔亚马逊河类似景观中土地利用的变化产生的。