| 1. | Summarization about mechanism and mathematics simulation of soil erosion and sediment yield on slope surface
坡面土壤侵蚀产沙机理及数学模拟研究综述 |
| 2. | A primary discussion of soil erosion and sediment yield models of small watershed in lizikou of jialingjiang river
嘉陵江李子口小流域侵蚀产沙模型初探 |
| 3. | Soil erosion and sediment yield models based on the networks of runoff and sediment transport between plots in small basins in the hilly loess region
基于地块间水沙运移的黄土丘陵沟壑区小流域侵蚀产沙模型 |
| 4. | And it is the research hotspot as to the scientists of soil and water conservation that the law of soil erosion and sediment yield and the development trend prediction of soil and water loss of small watershed
小流域是我国生态环境恢复重建与水土流失综合治理的基本单元，其侵蚀产沙规律及发展趋势预报一直为土壤侵蚀与水土保持学界研究热点。 |
| 5. | Therefore , nowadays major problem is how to reduce the slope cultivated land ' s soil erosion and sediment concentration transporting to three gorges reservoir in order to prolong the three gorges engineering ' s use time and protect the safety of the middle and lower reaches channel of yangtze river
因此当前的主要问题是如何臧轻坡耕地土壤侵蚀，减少进入三峡库区的泥沙量，延长三峡工程的运转时间，保障长江中下游河道的安全。另外，按土壤平均厚度78 。 |
| 6. | In the late part of the active developing period , the temporal variation of sediment concentration and sediment transport ratio of each rainfall can be expressed by exponent function and the variation presents quadratic polynomial function in the stable developing period . the spatial variation character of sediment yields with space of the experimental watershed model . the active position of soil erosion and sediment yield of the experimental watershed model changes from the downside to the upside with the developing process of the watershed model
流域模型侵蚀产沙空间变化特征侵蚀产沙的活跃部位随流域模型发育过程呈现由流域模型下部逐渐向上部发展特征，其中流域模型下中部为发育初期时段和发育活跃时段侵蚀产沙的活跃部位，流域模型上部是发育稳定时段侵蚀产沙的活跃部位。 |
| 7. | In the early developing period and active developing period , the downside and middle part of the experimental watershed model are the active positions of soil erosion and sediment yield respectively , and the upside of the experimental watershed model in stable developing period of the watershed model . the main gully plays dominant role in the sediment yield process of the experimental watershed model
主沟在流域模型侵蚀产沙过程中居于主导地位，主沟的产沙量占流域模型总产沙量比例保持在48 . 7 - 66 . 6之间，在主沟的泥沙沉积量所占流域模型总泥沙沉积量的比例也保持在64 . 9 - 99 . 4之间。 |
| 8. | Understanding the feedbacks and dominant controlling mechanisms among vegetation , hydrology , erosion , and nutrient dynamics is the key to scaling research results at multiple scales integration of landscape ecophysiological processes and hydrological processes in spatially distributed , physically - based hydrological modeling is the key to understanding the vegetation - hydrology - soil erosion and sediment yield processes
同时，作为有效的研究工具，今后水文模型的发展应更加注重耦合植被生理生态过程以及景观生态过程，从流域径流泥沙对多尺度植被变化水文响应的过程与机制入手，为植被恢复与重建、改善流域水资源状况和流域生态环境奠定基础。 |
| 9. | The topographic feature is one of the main factors that influence the process of soil erosion and sediment yield of small watershed . the quantitative parameters of small watershed topographic feature are average watershed slope , average slope length , gully density and so on , which are based on the quantitative method of slope character and do not reflect the essential character of the small watershed topographic feature , which are complex
地貌形态是影响小流域侵蚀产沙的主要下垫面因素之一，其量化参数一般继承坡面地貌特征量化方法(如坡度、坡长因子)而采用平均坡度、平均坡长及沟壑密度等参数，这些参数仅是对流域地貌形态的概化和单因子表达，没有真正反映流域地貌形态复杂的本质特征和相互联系。 |
| 10. | Knowledge and conclusions educed from the study are following : firstly , actual behaviors of soil erosion on affecting soil quality have been described . comparisons of landform measurements on the spots , and results of physical and chemical analyzing indicated that micro - iandform , proportions of soil particles sizes , and contents of soil carbon and nutrient have differences of spatial distribution under different conditions of fertilization development , cultivation , slope , and soil erosion management , which are closely related to intensities of soil erosion and sediment deposition
研究中，在前人基础上紧跟研究前沿，主要得出如下成果和创新点：一、明确了侵蚀作用影响土壤碳和养分含量的具体表现：经过实地测量、采样颗粒分析和养分分析，结果表明，在不同培肥、不同耕作、不同坡度以及不同侵蚀控制条件下，受侵蚀及堆积作用强弱的影响，微地形形态、土壤颗粒组成、碳和养分含量在空间上都可能出现较大的分布差异。 |
