ABSTRACT

Soil quality assessment is important for arable land, particularly in the vicinity of urban areas. The research was carried out to determine the quality of soil that has been farmed for different land uses. Geo-referenced 200 surface soil samples were collected from agriculture, horticulture, flower and plantation land-uses, and were analyzed for soil texture and nutrients, of which pH, OC, N, P₂O₅, K₂O, Mn, Cu, Ca, and dehydrogenase activity (DHA) were found statistically significant and were chosen for principal component analysis (PCA). Based on the level of significance from PCA only five variables (pH, K₂O, Cu, Ca, and DHA) were retained for minimum data set and linear scoring functions were used to provide unit-less scores for the selected data sets, which were then integrated into a soil quality index (SQI). Plantation land use had the lowest (SQI) of 0.51, whereas agriculture land use had the highest SQI (0.55) and was comparable to flower and horticultural land uses (0.53). The SQI of agriculture land was found better than the plantation land use in nearly all of the quality indicators evaluated. As a result, implementing management measures that improve soil quality, such as OC, is critical for sustainable agricultural production.

摘要

土壤质量评估对于耕地非常重要，特别是在城市地区附近。该研究的目的是确定不同土地用途耕种的土壤质量。从农业、园艺、花卉和种植园土地利用中收集了地理参考的 200 个表层土壤样本，并对土壤质地和养分进行了分析，其中 pH、OC、N、P 2 O 5 、K 2 O、Mn、Cu、Ca 和脱氢酶活性 (DHA) 被发现具有统计显着性，并被选择进行主_成分分析₍ PCA ₎。根据 PCA 的显着性水平，只有五个变量（pH、K ₂O、Cu、Ca 和 DHA）保留为最小数据集，并使用线性评分函数为所选数据集提供无单位分数，然后将其整合到土壤质量指数（SQI）中。种植园土地利用的 SQI 最低，为 0.51，而农业用地的 SQI 最高 (0.55)，与花卉和园艺用地利用 (0.53) 相当。在几乎所有评估的质量指标中，农业用地的 SQI 都优于种植园用地。因此，实施有机肥等改善土壤质量的管理措施对于可持续农业生产至关重要。