中文摘要：

土壤性质上的耕种侵蚀的网效果将在土壤成分与空间变化被联系，因此在生态的农业起一个重要作用。我们由在 Yangtze 的二处斜坡风景(一个线性斜坡和复杂斜坡)没有降雨在一个时期期间锄地 15 次进行了连续耕种三个峡水库区域，在土壤化学药品性质检验在土壤侵蚀率和变化之间的关系并且在在线性、复杂的斜坡之间的 SOC 和营养素上比较土壤再分配的效果。在模仿的耕种以后，在土壤的 137Cs 库存的著名变化在线性斜坡上发生在顶点和 toeslope 位置，当在 137Cs 库存在有重要变化时凸并且建筑群上的凹面位置倾斜。分别地，土壤侧面由于没有土壤代替为线性、复杂的斜坡消失在顶点斜坡边界，与 16.0% 试验性的阴谋和 7.6% 的暴露区域。玷污器官的 C 和营养素完全在土壤 eroding 地区与土壤侧面的消失被弄空，而 SOC 的显著增加，全部的 N 和在全部的滋养的集中( P 和 K )的耕种以后的表面土壤和减少的可得到的滋养的集中在线性斜坡上在 depositional 地区被发现。为复杂斜坡，然而，在 SOC 和耕种以后的表面土壤的滋养的集中变化在线性斜坡上展出了与那不同的一个模式，它在 SOC 和全部的滋养的集中显示出显著减少但是在在 toeslope 位置的耕种以后的可得到的滋养的集中的细微增加。由于到斜坡的底部的从顶的土壤深度的渐渐的增加，在土壤侧面的 SOC 和滋养的库存显著地与再分配在两个上评估的土壤被相关线性、复杂的斜坡。耕种在表面土壤层和土壤侧面引起土壤化学药品性质的显著变化，并且为在陡峭地泼出风景下坡的土壤侧面增加 SOC 和滋养的库存。

英文摘要：

The net effect of tillage erosion on soil properties would be associated with the spatial variation in soil constituents,and therefore plays an important role in ecological agriculture.We conducted a consecutive tillage by hoeing 15 times during a period with no rainfall in the two slope landscapes（a linear slope and complex slope） of the Yangtze Three Gorges reservoir areas,to examine the relationship between soil erosion rates and the variations in soil chemical properties and compare the effects of soil redistribution on SOC and nutrients between the linear and complex slopes.After the simulated tillage,notable changes in 137 Cs inventories of the soil occurred in the summit and toeslope positions on the linear slope,while there were significant changes in 137 Cs inventories at convex and concave positions on the complex slope.Soil profile disappeared at the summit slope boundary,with the exposure area of 16.0% and 7.6% of the experimental plot,respectively,for the linear and complex slopes due to no soil replacement.Soil organic C and nutrients were completely depleted with the disappearance of soil profiles at soil eroding zones,whereas a remarkable increase in SOC,total N and available nutrient concentrations of the post-tillage surface soil and a decrease in total nutrient concentrations（P and K） were found at depositional zones on the linear slope.For the complex slope,however,changes in SOC and nutrient concentrations of the post-tillage surface soil exhibited a patterndifferent from that on the linear slope,which showed a remarkable decrease in SOC and total nutrient concentrations but a slight increase in available nutrient concentrations after tillage in the toeslope position.Due to the gradual increase in soil depth from top to bottom of the slope,SOC and nutrient inventories in the soil profiles were significantly correlated with soil redistribution rates on both the linear and complex slopes.Tillage causes remarkable changes of soil chemical properties in the surface soil layer and soil pro