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| 土地整理中不同梯田空间配置的水土保持效应 | |
| 引用本文： | 刘世梁,王聪,张希来,杨珏婕,邱扬,王军. 土地整理中不同梯田空间配置的水土保持效应[J]. 水土保持学报, 2011, 25(4): 59-62,68 |
| 作者姓名： | 刘世梁 王聪 张希来 杨珏婕 邱扬 王军 |
| 作者单位： | 1. 北京师范大学环境学院水环境模拟国家重点实验室,北京,100875 2. 陕西省国家建设征地服务中心,西安,710054 3. 北京师范大学地理与遥感科学学院,北京,100875 4. 国土资源部土地整理中心,北京,100812 |
| 基金项目： | 国家科技支撑计划项目(2008BAB38B02); 国家自然科学基金项目(40871237,50939001); 中央高校基本科研业务费专项 |
| 摘 要： | 利用WEPP坡面土壤流失模型,基于典型区的土地整理项目状况,模拟不同坡度条件下,梯田空间配置的水土保持效应,通过对坡度、降雨量和梯田层次的设置,分析30种情景模式下,土壤流失量和产沙量的变化规律。结果表明,基于物理过程的WEPP机理模型能够较好地定量模拟土壤在坡面上的流失情况。总体上看,梯田建设对于土壤流失量和产沙量都具有明显的影响：对于土壤流失量来说,梯田调控了土壤在坡面上流失的空间特征,降低了土壤坡面流失情况;对于产沙量来说,梯田建设有效拦截了产沙过程,随着坡度从5°到25°,拦截率从20%上升到84%;对于梯田数量来看,梯田数目越多,土壤流失量越低,但是产沙量变化不大。对比不同坡度和降雨强度,坡度和降雨强度仍是决定性因子。 |
| 关 键 词： | 水土保持 土地整理 梯田建设 WEPP模型 |
Soil and Water Conservation Effect of Different Terrace Configurations in Land Consolidation Project |
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| LIU Shi-liang,WANG Cong,ZHANG Xi-lai,YANG Jue-jie,QIU Yang,WANG Jun. Soil and Water Conservation Effect of Different Terrace Configurations in Land Consolidation Project[J]. Journal of Soil and Water Conservation, 2011, 25(4): 59-62,68 | |
| Authors: | LIU Shi-liang WANG Cong ZHANG Xi-lai YANG Jue-jie QIU Yang WANG Jun |
| Affiliation: | LIU Shi-liang1,WANG Cong1,ZHANG Xi-lai2,YANG Jue-jie1,QIU Yang3,WANG Jun4(1.State Key Laboratory of Water Environment Simulation,School of Environment,Beijing Normal University,Beijing 100875,2.State Land Expropriation Services Center ofShannxi Province,Xi'an 710054,3.School of Geography,4.Land Consolidation and Rehabilitation Center of Land and Resources Ministry,Beijing 100812) |
| Abstract: | In this study,based on typical land consolidation project conditions,WEPP model was used to simulate the effects of different terrace configuration on soil and water conservation under different slopes and precipitation intensities.By the combination of different slopes,rainfalls and the terrace numbers,30 scenarios were set to model the soil loss and sediment yield.The results showed that WEPP model could quantitatively describe the loss of soil conditions on the slope with the mechanism of physical proces... |
| Keywords: | soil and water conservation land consolidation terrace construction WEPP model |
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