The Assessment of Soil Quality on the Arable Land in Yellow River Delta Combined with Remote Sensing Technology

• 作者: Haibo Ma Hanjie Hao Jingbo An Linlin Guo Qian Sun Yanghua Liu Zhao Yang
• 来源期刊: 世界工程和技术(英文)
• 学科: 医学
• 关键词: NDVI REMOTE SENSING Technology SOIL QUALITY INDEXING SOIL QUALITY INDICATORS
• 年，卷（期）: 2017,（5）
• 页码范围: 18-26
• 页数: 9页
• 分类号: R73

摘要

Soil quality assessment is essential to improve the understanding of soil quality and make proper agricultural practices. However, soil quality assessments are extremely difficult to implement in a large-scale area, since they are time and labor consuming. Remote sensing technique gained more attention in plant and soil information monitoring recently for its high effi-ciency and convenience. But seldom studies tested the applicability of remote sensing techniques before implementing. This study conducted the soil quality assessment in a typical agricultural county in the Yellow River delta (Kenli). We found the soil quality in Kenli was dominantly in the low grade (71.85%), with deficient nutrient (SOM and TN), poor structure (high BD) and high EC. Salinity is the primary limiting factor for soil quality in Kenli, and adjustment of soil salinization through suitable farming practices such as organic fertilizers application, irrigation for leaching, and salt-tolerant crop planting is the key point for soil quality improvement. We obtained the normalized difference vegetation index (NDVI) of the study area by remote sensing technique, and found the high correlation between NDVI and soil quality indicator (SOM, TN and EC) and yield. The NDVI can help to study the soil conditions as a soil quality assessment indicator. More studies about the ap-plication of remote sensing technique on soil quality detecting are expected.