流水侵蚀

由于全新世气候的波动变化，以及人类活动的影响，运城盆地洪积扇地表出现过4个比较明显的面状流水侵蚀-堆积作用阶段，时间分别在11500-11000aB.P。

Because of the fluctuation and change of the Holocene climate the four sheet rainwash erosional-depositional phases happened approximately in 11500-11000a B.P.

流水侵蚀过程对气候变化响应趋势的初步研究&以黄土高原北缘气候过渡带为例

A PRELIMINARY STUDY ON WATER EROSION RESPONSIVE TO CLIMATIC CHANGE & Taking Climatic Transitional Zone on the Northern Fringe of Loess Plateau as an Example

开始气候干旱，人类活动强烈地影响着当地的生态环境，加速了面状流水侵蚀沉积；

, the climate became dryer , but the human activities affected strongly the local ecology and environment , and accelerated the sheet rainwash erosion-redepositions .

自夏商时代以来，农业耕垦活动影响古洪积扇地表，促进了坡面流水侵蚀堆积过程，发生了面状流水侵蚀；

Since Xia and Shang dynasties , the human agricultural cultivation activities affected the surface of pluvial-alluvial fan and promoted the slope runoff erosion and deposit process .

利用方向边缘检测、方向数学形态学方法和拟态流水侵蚀法得到了较好的完整图形闭合外边界。

By using this method consisting of directional edge detection , directional mathematical morphological method and mimesis watering corrosion method , a better close outside boundary was obtained .

其原因可能有4个：一是粉尘堆积速率不同，二是受流水侵蚀，三是物质来源有别，四是局地的成壤条件差异。

It may be caused by ( 1 ) different rate of dust accumulation ,( 2 ) water erosion ,( 3 ) different source materials and ( 4 ) variation in local soil forming conditions .

由于北大山冰川遗迹中的节理裂隙，受到冰川和流水侵蚀，特别是长期强烈的寒冻风化及风蚀等外动力作用，逐渐形成了现今独特的花岗岩石林。

Due to those joints within glacial remains were eroded by glacier and running water action , especial exogenous process of frost weathering and wind abrasion for a long time , the unique granite forest was gradually formed nowadays .

同时也有证据证明整个狮身人面像受到过流水的侵蚀。

There is also evidence of water erosion over the Sphinx .

形成机制是流水溯源侵蚀岩石块体崩塌谷坡后退。

The formation mechanism is the flowing water trace to the source erosion-rock collapse-ancient slope withdrawal .

流水能侵蚀砂石雕像，多个世纪以来一直是个威胁。

Running water , which can damage sandstone carvings , has been a danger for centuries .

河流或流水的侵蚀淤积是改造地质环境的最重要因素之一。

The erosion and deposition process of river or flowing water is one of the most important factors for changing the geological environment .

流水是土壤侵蚀的主因之一。

Running water is one of the principal causes of soil erosion .

附近的双窟也有一座塔，不过它的基座因为洞穴底部以前充盈的流水而遭侵蚀。

A nearby twin cave also has a pagoda , though its base has been eroded by water that once filled the bottom of the cave .

在中部黄土丘陵和山地区，流水的面状侵蚀分布广泛，但沟谷侵蚀、重力侵蚀强度大；

2 , In central loess hilly and mountain district , sheet erosion with water has wide area and the great erosion intensity ;