| 吉林省德惠—农安地区土地质量地球化学评估 |
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| 引用本文： | 孙淑梅,张连志,闫冬.吉林省德惠—农安地区土地质量地球化学评估[J].现代地质,2008,22(6). |
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| 作者姓名： | 孙淑梅 张连志 闫冬 |
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| 作者单位： | 1. 吉林省地质调查院,吉林,长春,130061
2. 吉林省辉南县农业机械化技术推广站,吉林,辉南,135100 |
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| 基金项目： | 中国地质调查局国土资源大调查项目
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| 摘 要： | 土地质量的好坏直接影响到农牧业生产效益和人们的生活质量。土地资源数量、质量、生态管护协调管理是未来土地资源管理的方向,土地质量评估是土地资源优化配置和持续利用、社会经济持续发展的需要。吉林省正在开展的多目标区域地球化学调查为土地质量评估提供了丰富的地球化学数据。利用吉林省德惠—农安地区的1∶25万多目标区域地球化学调查数据,进行土地质量地球化学评估的试验研究。结果表明:研究区土地质量总体东部优于西部,黑土地质量最好,但已有7.97%的黑土已成为中等或差等土地,黑钙土有43%属于中低产田,黑土地退化严重;轻度沙化土地仍保持较好的土地质量,加强沙化治理与耕地保护,仍可发挥其生产潜力。依据土地质量因地制宜地利用土地,将促进区域生态农业的良性循环。
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| 关 键 词： | 土地质量 地球化学评估 土壤肥力 土壤环境 |
Experimental Study on Method and Technique of Land Quality Geochemical Assessment |
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| SUN Shu-mei,ZHANG Lian-zhi,YAN Dong.Experimental Study on Method and Technique of Land Quality Geochemical Assessment[J].Geoscience——Journal of Graduate School,China University of Geosciences,2008,22(6). |
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| Authors: | SUN Shu-mei ZHANG Lian-zhi YAN Dong |
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| Abstract: | Agriculture and livestock production efficiency and human living quality are impacted directly by the land quality.Quantity and quality of land resource and coordination management of ecological protection were the direction of land resource management.It was necessary to evaluate the land quality for optimized allocation and sustainable use of land resource and sustainable development of social economy.Abundant geochemical data were obtained by the multi-objective regional geochemical survey of Jilin Province.The geochemical assessment(1∶250,000)of land quality in Dehui-Nongan district,the western and middle Jilin Province was taken.The results indicate that the land quality in the east is better than that in the west.The quality of black soil was best,but 7.97 percent of phaeozem had been changed into middle grade or low grade land.43 percent of chernozem belonged to middle and low product field,thus the black soil degenerated seriously.Since slightly sand soil kept better land quality,the soil might be exploited through intensification of sand regulation and farmland protection.Optimal cycle of regional eco-agriculture would be promoted by the rational land-use mode taken according to land quality. |
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| Keywords: | land quality geochemical assessment soil fertilization soil environment |
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