Abstract—In total, 7444 fields with a total area of 857.9 thousand hectares were mapped on the territory of five eastern arid regions of the Stavropol krai. As of 2021, arable land occupies more than 55% of the study area and is located mainly in its western part. Winter crops occupy 4693 fields with a total area of more than 487 thousand hectares (56.9% of the total field area). Mapping of the contours of the fields was carried out on the basis of satellite images from Sentinel-2 (natural colors). The morphometric characteristics of the fields were calculated on the basis of the SRTM3 DEM. The mask of winter crops for the period 2011–2021 and weekly composites with data on the NDVI value for spring (March–May) were obtained using the VEGA-Science service. The areas of the fields identified according to remote sensing data are comparable with official statistics. The fields are located on lands with a steepness of up to 5°, the steepness of 1°–2° prevails (about 90% of the total area). Most fields have a predominant southern exposure, there are no fields with a northern exposure. There are 13 kinds of soils on the territory of the study area, chestnut deep soils are predominant. The average NDVI for March–May 2011–2021 shows the highest values in fields located on meadow soils, the lowest NDVI values are observed on salt flats and salt marshes. It was revealed that the NDVI value decreases with increasing field size, the optimal field size is up to 150 hectares. The highest NDVI values were found in fields with a steepness of 1°–2°, southern exposure and meadow, chestnut- and light-chestnut soils. The influence of annual precipitation amounts on the NDVI value is analyzed.

摘要：斯塔夫罗波尔边疆区东部五个干旱地区共绘制了 7444 块田地，总面积 85.79 万公顷。截至2021年，耕地面积占研究面积的55%以上，主要位于西部地区。冬季作物面积4693块，总面积48.7万多公顷（占总面积的56.9%）。田地轮廓的绘制是根据Sentinel-2的卫星图像（自然色）进行的。基于SRTM3 DEM计算了田地的形态特征。使用 VEGA-Science 服务获得了 2011-2021 年期间冬季作物的掩模以及春季（3 月至 5 月）NDVI 值数据的每周综合数据。根据遥感数据确定的田地面积与官方统计数据具有可比性。田地大多位于坡度达5°的土地上，以1°~2°的坡度为主（约占总面积的90%）。大多数油田主要朝南，没有朝北的油田。研究区境内有13种土壤，以板栗深层土为主。 2011年3月至2021年5月的平均NDVI值显示，位于草甸土壤的田地的NDVI值最高，而盐滩和盐沼的NDVI值最低。结果表明，NDVI值随着田地面积的增加而减小，最佳田地面积为150公顷。 NDVI 值最高出现在坡度为 1°–2°、朝南的田地以及草地、栗子土和浅栗子土中。分析了年降水量对NDVI值的影响。