Data for: Soil site suitability analysis using geo-statistical and visualization techniques for selected winter crops in Sagar Island, India

The data set contains tables and figures on landuse land cover pattern, distribution of soil properties collected from 251 grid cells with resolution of 1 km by 1 km, and as well as soil suitability analysis of winter crops (Sunflower, Chilli, potato and mustard) in the Sagar Island. Table 1 and figure 1 represent area and percent of total geographical area under different landuse land covers derived from satellite images. Tables 2 and 3 represent variation in soil properties and the estimated soil suitability index values for the winter crops in the Island. Figures 2, 3 and 4 represent percent area under different classes and variation of soil properties (pH, SOC, EC, particle size distribution, macro-nutrients NPK percent distribution) while figure 5 represents variation in soil suitability index across the Island. We also supplied row data on LULC classes (with pixel numbers), measured soil properties, classes of soil properties and in detail the methodology we adopted in estimation of soil quality indices for the four above mentioned different crops in excel sheets.

本数据集包含萨加尔岛（Sagar Island）的土地利用/土地覆被（Land Use/Land Cover, LULC）格局、土壤属性分布相关的表格与图件，数据采集自251个1km×1km分辨率的网格单元；同时涵盖该岛越冬作物（向日葵、辣椒、马铃薯与芥菜）的土壤适宜性分析成果。表1与图1展示了通过卫星影像提取的各类土地利用/土地覆被类型的面积及其占总地理面积的百分比。表2与表3分别呈现了该岛土壤属性的变化特征，以及各越冬作物的估算土壤适宜性指数值。图2、3、4展示了不同等级下的面积占比，以及土壤属性（pH值、土壤有机碳（Soil Organic Carbon, SOC）、电导率（Electrical Conductivity, EC）、粒径分布、大量营养素NPK的百分比分布）的变化规律；图5则呈现了全岛范围内土壤适宜性指数的空间变异特征。此外，我们还在Excel工作表中提供了土地利用/土地覆被类型的原始数据（含像元数）、实测土壤属性数据、土壤属性分级信息，以及针对上述四种作物估算土壤质量指数的详细方法。