| 基于GIS的江淮丘陵地区典型县域土壤质量评价 |
| |
| 引用本文： | 郜敏,黄安东,李德成,张兆冬,王莉莉,赵明松.基于GIS的江淮丘陵地区典型县域土壤质量评价[J].土壤通报,2021,52(1):16-24. |
| |
| 作者姓名： | 郜敏 黄安东 李德成 张兆冬 王莉莉 赵明松 |
| |
| 作者单位： | 1.安徽理工大学空间信息与测绘工程学院，安徽 淮南 232001 |
| |
| 基金项目： | 国家自然科学基金（41501226）、安徽省高校自然科学研究项目（kj2015a034）、土壤与农业可持续发展国家重点实验室开放基金项目（Y412201431）、安徽理工大学人才引进项目（zy020）资助 |
| |
| 摘 要： | 以安徽省江淮丘陵地区的定远县为例，自1401个土壤样本点获取土壤有机质、全氮、速效磷、速效钾、土壤侵蚀程度、耕层厚度共六项指标，利用GIS空间插值方法，使用隶属度函数，构建土壤质量综合评价模型，对该县土壤质量进行评价。研究结果表明:（1）研究区平均土壤质量指数为0.56，采用等间距法将土壤质量划分为5级，其中三等地占总面积的59.54%，二等地占31.4%，一等地和四等地分别为1.53%、7.52%，研究区内没有五等地；（2）土壤质量在空间分布上呈现出东南方向至西北方向下降的趋势，平原地区的土壤养分含量高于丘陵岗地、质量相对较好；（3）不同土地利用类型土壤中水田土壤质量略高于旱地、草地和林地。土壤质量的评价结果对于研究区改善土壤质量、合理配置农业土地资源有一定参考价值。
|
| 关 键 词： | 土壤质量评价 克里格插值 隶属度函数 相关系数 |
| 收稿时间： | 2020-04-07 |
Soil Quality Evaluation in a Typical County of Jianghuai Hilly Region Based on GIS |
| |
| Abstract: | About 1401 soil samples were taken from Dingyuan, Anhui Province, and six evaluation indicators, including soil organic matter (SOM), available phosphorus (AP), available potassium (AK), total nitrogen (TN), soil erosion degree, and soil thickness were selected. Using GIS spatial interpolation analysis method and the membership function, a comprehensive soil quality evaluation model was constructed to evaluate soil quality in the study area. The results showed that: (1) The soil quality index in Dingyuan was on average 0.56. Soil quality was classified 5 grades by equal interval method. The second-class, third-class, first-class and fourth-class areas accounted for 31.4%, 59.54%, 1.53% and 7.52% of the total area of Dingyuan, respectively; (2) The spatial distribution of soil quality showed a downward trend from southeast to northwest. The soil nutrient content in the plain area was higher than that in the hilly area, and the soil quality was relatively better; (3) The soil quality of paddy field was slightly higher than that of dry land, grassland and woodland. The evaluation results of soil quality in the study area were helpful for improving soil quality and allocating agricultural land resources rationally. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《土壤通报》浏览原始摘要信息 |
| 点击此处可从《土壤通报》下载免费的PDF全文 |
|
