| 基于GIS的黄淮海平原土壤盐分分布与管理研究 |
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| 引用本文： | 白由路、李保国、石元春.基于GIS的黄淮海平原土壤盐分分布与管理研究[J].资源科学,1999,21(4):66-70. |
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| 作者姓名： | 白由路、李保国、石元春 |
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| 作者单位： | 中国农业大学土壤和水科学系,北京,100094 |
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| 摘 要： | 本文通过GIS定位取样分析、Kriging插值和GIS处理，研究了黄淮海平原土壤盐分的空间分布，结果表明：黄淮海平原非盐渍土的面积为80.8%，轻度盐化土壤占17.0%，中度盐化占2.2%，重度盐化土壤的面积仅占0.04%。有7.2%的土壤表层(0∽10cm)虽无盐化现象，但20cm以下次土壤含盐量超0.1%；黄淮海平原盐渍化目前已主要分布于沿渤海湾低平原、河北省的衡水以北和山东南四湖地区，其它地区已无大面积盐渍土分布；从宏观而论，黄淮海平原的盐渍化程度正在减轻，土壤正向脱盐方向发展，大部分地区已经脱离了土壤盐渍化的困扰。但是，在上述三地区及周边地区，土壤盐渍化的治理与次生盐渍化的防治仍是近期农业管理所必须考虑的重要因素。
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| 关 键 词： | 土壤盐分 黄淮海 GIS |
| 文章编号： | 1007-7588(1999)04-0066-05 |
| 修稿时间： | 1999年4月8日 |
RESEARCH OF THE SOIL SALT CONTENT DISTRIBUTION AND MANAGEMENT IN HUANG-HUAI-HAI PLAIN BASED ON GIS |
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| BAI You-lu,LI Bao-guo,SHI Yuan-chun.RESEARCH OF THE SOIL SALT CONTENT DISTRIBUTION AND MANAGEMENT IN HUANG-HUAI-HAI PLAIN BASED ON GIS[J].Resources Science,1999,21(4):66-70. |
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| Authors: | BAI You-lu LI Bao-guo SHI Yuan-chun |
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| Abstract: | The spatial distribution of soil salt content was s tudied by means of GPS,GIS and Kriging method.The results indicated that non sa line soils,lightly saline soils,moderately saline soils and severely saline soil s cover 80.8%,17.0%,2.2%,and 0.04% of the Huang Huai Hai Plain respectively. T he area with soil salt content lower than 0.1% in a depth of 0 200 cm occupies 75% of the entire plain.The area with surface soil(0 10 cm)free from salinizati on but with salt content over 0.1% under 20 cm of sub layer makes up 7.2%.The r esults also indicated that the extent of salinization in the study area is light er nowadays than that in the past. At present,the salt affected soils in the Hu ang Huai Hai Plain are only distributed on the lower plain along the Bohai Gul f,northern Hengshui in Hebei Province and Nansihu region in Shandong Province.Th e entire plain has been basically free from soil salinization but in the three r egions mentioned above,the prevention and management of soil salinization and se condary salinization is essential in farming practice management. Irrigation sho uld satisfy the crop requirements and leaching soil salts in the regions with so il salt content lower than 0.1% in surface soil and more over the sub layers. |
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| Keywords: | Salt affected soil Huang Huai Hai Plain GI S |
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