| 张涛,吴昭阳,周文龙.贵州荔波县耕地土壤质量地球化学等级划分及其分布特征[J].贵州地质,2020,37(4):463-470 |
| 贵州荔波县耕地土壤质量地球化学等级划分及其分布特征 |
| Geochemical Classification and Distribution Characteristics of Cultivated Soil Quality in Libo, Guizhou |
| 投稿时间：2020-03-20 |
| DOI： |
| 中文关键词: 荔波县 耕地 土壤质量 等级划分 分布特征 |
| 英文关键词:Libo Cultivated Land Soil Quality Gradation Distribution Characteristics |
| 基金项目:黔耕调2017-03、黔色耕调2017-03-33项目资助。 |
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| 摘要点击次数: 460 |
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| 中文摘要: |
| 荔波县开展1∶50000耕地采样分析后，在Arcgis平台以耕地赋值图斑为评价单元，运用地球化学元素等级划分标准，对荔波县耕地土壤质量地球化学进行评价。由耕地土壤养分综合等级、耕地土壤环境综合等级，形成耕地土壤质量地球化学综合等级。结果表明:优质耕地土壤面积为293万亩占949%；良好耕地土壤面积为411万亩占1329%；中等耕地土壤面积为2227万亩占7211%；差等耕地土壤面积为025万亩占081%。评价区耕地土壤质量地球化学等级以中等级良好级别为主，2638万亩，占比达8540%。其中朝阳镇、佳荣镇、茂兰镇、小七孔镇耕地土壤质量主要以中等以上为主。 |
| 英文摘要: |
| After 1∶50000 cultivated land sampling and analysis in Libo, On the platform of ArcGIS, the soil quality geochemistry of cultivated land inLibo county was evaluated by using the geochemical element classification standard, taking the cultivated land assignment map as the evaluation unit. The comprehensive grade of soil quality and geochemistry is formed by the comprehensive grade of soil nutrients and soil environment.The results show that: The high-quality cultivated soil area is 29 300 mu, accounting for 9.49%, the good cultivated soil area is 41 100 mu, accounting for 13.29%, the medium cultivated soil area is 222 700 mu, accounting for 72.11%, the poor cultivated soil area is 25 000 mu, accounting for 0.81%, the inferior cultivated soil area is 13 300 mu, accounting for 4.29%. The geochemical grade of cultivated soil quality in the evaluation area is mainly good grade, 263 800 mu, accounting for 85.40%. The cultivated land quality of Chaoyang, Jiarong, Maolan and xiaoqikong is mainly above medium level. The inferior cultivated land in the county is mainly distributed in the south of Yaoshan Yao nationality township and the middle of Limingguan Shui nationality. |
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