| 长期施肥下黄壤旱地磷对水环境的影响及其风险评价 |
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| 引用本文： | 刘方,黄昌勇,何腾兵,钱晓刚,刘元生,罗海波.长期施肥下黄壤旱地磷对水环境的影响及其风险评价[J].土壤学报,2003,40(6):838-844. |
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| 作者姓名： | 刘方 黄昌勇 何腾兵 钱晓刚 刘元生 罗海波 |
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| 作者单位： | 1. 浙江大学环境与资源学院,杭州,310029
2. 贵州大学农学院,贵阳,550025 |
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| 基金项目： | 国家重点科技攻关计划西部专项(2000-K01-04-06)资助 |
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| 摘 要： | 通过对贵州中部黄壤旱坡地进行采样以及采用无界径流小区法收集地表径流样品 ,探讨长期施肥下旱地磷素水平与地表径流磷浓度的变化及其对水环境的影响。结果表明 :长期施肥下黄壤旱地的磷素水平不断提高 ,CaCl2 浸提磷 (溶解态活性磷 )和NaOH浸提磷 (藻类可利用的土壤总磷 )与土壤全磷或有效磷之间存在显著的相关性 ,土壤富磷化的同时 ,旱地磷对水环境影响的潜能明显提高。黄壤旱坡地中CaCl2 浸提磷、Olsen P、NaOH浸提磷、土壤磷吸持指数、土壤磷饱和度与地表径流中颗粒态磷、生物有效性磷和溶解态活性磷之间的相关性均达显著水平 ,以这些参数作为评价指标 ,初步将黄壤旱地磷对水环境的潜在影响程度分为 3个等级
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| 关 键 词： | 黄壤旱地 土壤磷素 地表径流磷 环境影响评价 |
| 收稿时间： | 2002/6/10 0:00:00 |
| 修稿时间： | 2002年6月10日 |
THE ENVIRONMENTAL IMPACT OF PHOSPHORUS ON WATER BY A LONG-TERM APPLYING FERTILIZER P IN THE UPLAND FIELDS OF YELLOW SOIL AREAS AND ITS RISKS EVALUATION |
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| Liu Fang,Huang Chang-yong,He Teng-bing,Qian Xiao-gang,Liu Yuan-sheng and Luo Hai-bo.THE ENVIRONMENTAL IMPACT OF PHOSPHORUS ON WATER BY A LONG-TERM APPLYING FERTILIZER P IN THE UPLAND FIELDS OF YELLOW SOIL AREAS AND ITS RISKS EVALUATION[J].Acta Pedologica Sinica,2003,40(6):838-844. |
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| Authors: | Liu Fang Huang Chang-yong He Teng-bing Qian Xiao-gang Liu Yuan-sheng and Luo Hai-bo |
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| Affiliation: | Liu Fang 1 Huang Chang-yong 1 He Teng-bing 2 Qian Xiao-gang 2 Liu Yuan-sheng 2 Luo Hai-bo 2 |
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| Abstract: | The environmental impact of phosphorus on surface water quality by a long-term applying fertilizer P in the upland fields of yellow soil areas and its risks evaluation was studied in Guizhou province. The results showed that the contents of algae-available P (NaOH-extractable P) and labile P (CaCl 2-extractable P) in the soils correlated significantly with the quantities of Olsen-P or total P in the soils,while P application increased both soil P and its corresponding potential of P loss from soil to water bodies at the same time. The results also showed that the contents of CaCl 2-extractable P,Olsen-P,NaOH-extractable P in the soils and the phosphorus sorption of index (PSI) or the degree of soil saturation with phosphorus (DSSP) correlated significantly with the concentrations of dissolved active P,particulate P and bio-available P in runoff,respectively. CaCl 2-extractable P,Olsen-P,NaOH-extractable P,PSI and DSSP were used as indices to estimate agriculture P impacting on surface water quality. As a result,three environmental risk groups were constructed in the upland fields from yellow soil area. |
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| Keywords: | Yellow soil Soil phosphorus P concentration of runoff Environmental risks evaluation |
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