用于学校专业课程实习，需要数据完成相关实习内容，所以申请数据。

因为在论文阅读过程中对中国土地利用分类数据了解比较模糊，想进一步了解论文中方法的详细操作

本科论文使用计算土壤侵蚀中的水土保持措施因子P

完成课程作业中对于ArcGIS的分析需要

用于ArcGIS应用与实践课程考核的样例数据。

Paper title：Assessment of soil salinization risk in Northwestern China using the information value‒random forest coupled model Paper abstract：The objective of our study was to develop a model to improve the risk prediction of soil salinization, one of the most severe forms of soil degradation, under different influencing factors. Soil salinization and non-salinization points were identified in Northwestern China using Sentinel-2 remote sensing images and were randomly divided into two groups of training (70%) and testing (30%) datasets. Information value (IV) was used to conduct correlation analyses between the influencing factors and the occurrence of soil salinization, and a high-precision IV‒RF (random forest) coupled model was established. The direct and indirect effects of different factors on soil salinization were evaluated using a structural equation model (SEM). The results showed that soil salinization mainly occurs on slopes of 0‒6.6°, precipitation < 240.21 mm, evaporation capacity of 1945.26‒2298.64 mm, normalized difference vegetation index (NDVI) of 0.43‒0.61, and on farmland among the land use types, with standardized influence size being −0.31, −0.74, 0.41, −0.17 and 0.07, respectively. IV‒RF model (Area under curve [AUC] = 0.95, Accuracy =0.77, Recall = 0.99, F-score= 0.78) was superior to decision tree (DT), IV‒DT and RF models. The IV-RF calculation results shows that 47.23% of the whole region will experience very high risk of salinization in the future, and these high risk areas are mainly located in Xinjiang, Gansu and Ningxia provinces. These results indicated that the IV‒RF model can be widely used in the prediction of soil salinization, and it might provide a very good service for formulating strategies to prevent and manage land degradation from macro-perspectives. Paper type：Research Article Tutor叶伟林

本项目用于科研课题研究，西北地区（新疆省）干旱区研究与生态环境变化监测，需要用到土地利用数据用来分析GIS空间变化。麻烦通过谢谢！

Paper title：还没确定 Paper abstract：做抚河vic模型 Paper type：硕士论文 Tutor：傅春

用于arcgis练手，提高技能应用能力，

用于论文中研究区概况图绘制及日常的数据积累