ABSTRACT

A Soil Sustainability Index (SSI) is developed based on integration of Soil Degradation Rate (SDR), Soil Fertility Index (SFI), Soil Quality Index (SQI) and Soil Resilience Rate (SRR). SDI, SRR, SQI, and SFI resemble in being measurable from soil attributes that reveal the soil-environment functionality. This approach index was calculated based on four vertices, which are represented by the SDR and SRR exploring the inherent soil properties, SOI; capacity of the soil to function, and SFI; the presence of adequately available plant nutrients. The four studied indices were categorized as low, moderate and high classes with percentages of total area for the study area for SFI being: 4.01, 54.46, 31.21%; and for SQI: 19.26, 30.27, 40.15%; while for SDR: 34.00, 29.19, 26.48%; and SRR: 17.80, 56.99 and 14.89%. The SSI was calculated to assess the current state of the soil under the influence of different agricultural management practices. It depends on the area of the square where SQI, SFI, SDR and SRR are the four vertices of the square. The proposed SSI equation obtaining results of: 7.65, 41.88, and 40.15% of total area as low, moderate and high classes, respectively. This work obtained new formula and definition for soil sustainability.

摘要

土壤可持续性指数 (SSI) 是基于土壤退化率 (SDR)、土壤肥力指数 (SFI)、土壤质量指数 (SQI) 和土壤恢复率 (SRR) 的综合而开发的。SDI、SRR、SQI 和 SFI 类似于可从揭示土壤-环境功能的土壤属性中测量。该逼近指数是基于四个顶点计算的，分别以 SDR 和 SRR 为代表，探索土壤固有特性 SOI；土壤功能的能力和 SFI；存在充足的植物养分。四个研究指标分为低、中、高三个等级，SFI研究区域占总面积的百分比分别为：4.01、54.46、31.21%；SQI：19.26、30.27、40.15%；SDR：34.00、29.19、26.48%；和 SRR：17.80、56.99 和 14.89%。计算 SSI 是为了评估在不同农业管理实践影响下的土壤现状。它取决于正方形的面积，其中 SQI、SFI、SDR 和 SRR 是正方形的四个顶点。所提出的 SSI 方程获得的结果分别为：7.65、41.88 和 40.15% 的总面积分别为低、中和高等级。这项工作获得了土壤可持续性的新公式和定义。