两种效应共同决定了土壤矿质氮素的地表流失量。
These two distinct factors codetermined the total runoff loss of soil mineral nitrogen.
一个主要的问题是，退化的土壤变得密实，造成吸水量减少，从而导致水从地表流失并将表土带走。
One major problem is that degraded soils become compacted and so absorb less water, which then tends to run off the surface, taking topsoil with it.
农田地表秸秆覆盖是防止水土流失的一项主要措施，研究秸秆覆盖度与土壤风蚀、水蚀的定量关系对农田采取合理的覆盖形式有重要的指导意义。
The soil straw cover of farmland is a main method to prevent the soil and water erosion, it is very important to research the relation between the straw cover and the wind erosion.
在分析南方水土流失特征的基础上，对贴地表覆被保持水土效益作了系统评价。
The article analyzed the feature of soil and water loss in southern region, and appraised systematically the effects of furring mulches on controlling soil and water losing.
在库区实地的研究结果表明，在新开垦的坡耕地幼龄果园里，若果树间地表无其它作物覆盖时，有32.6％以上的降雨以地表径流的形式流失；
Results indicated that over 32.6% rainfall will loss by pathway, if crop doesn't cover with the earth's surface of orchard.
径流液中各形态氮、磷浓度远高于渗漏液，而两种流失方式下排水量差异不显著，故地表径流是该条件下氮素和磷素流失的主要方式。
The concentrations of nitrogen and phosphorus in runoff water is higher than that in infiltrated water. Surface runoff is the main way of nitrogen and phosphorus losses under the condition.
本文根据地表径流中溶质流失的流动特征和物理规律，基于矢量合成概念，建立了二层解析模型，描述从降雨开始径流使水溶质在地表的流失过程。
A simple two-layer analytical model was developed to describe the process of dissolved chemical loss in surface runoff from the beginning of runoff occurrence.
对水体流失过程中氮化物对地表水体污染模式进行了探讨，对其流失过程建立了预测模型，并对结果进行了验证．。
In this paper, the model for predicting the losses of nitrogen from watersheds is built, and the result of the model is verified.
玉米秸秆覆盖是利用作物秸秆覆盖地表，解决保土、培肥和控制水土流失的一项旱作农业耕作措施。
The research was conducted to investigate the effect of stubble and straw mulch on soil and water erosion on loess slope land by field test and rainfall simulation experiment in lab.
矿业开发破坏地表植被，扰动岩石结构，常造成严重的人为水土流失。
Mine exploitation could destroy the vegetation and disturb the rock structure, of earth surface. It could result serious soil and water loss.
因此，要想从植被覆盖的角度来控制土壤有机碳的流失，则应该将地表植被覆盖度维持在66%及其以上。
It meant that losses of organic carbon of soil suddenly decent when the vegetation coverage amounted to 66% or so.
严重的水土流失不但可以导致生态环境恶化，而且对地表土层的破坏，会使土地的生产能力下降，影响农业生产。
The water and soil loss not only bring on entironment worsement, but also reduced the capacity of ground yield by destroy surface layer of soil.
一方面，农村生活及农业生产严重缺水，另一方面，强烈的水土流失又使得大量地表径流流失。
It is serious water shortage in agricultural production and rural development in one hand; seriously water and soil erosion has caused the losses of plenty of surface runoff in another hand.
地表初始溶质浓度是影响溶质流失量的关键，也是模拟径流溶质流失的重要参数。
Surface effects of the initial solute concentration were the key to solute loss, also an important parameter of the simulated runoff solute loss.
一方面农村生活及农业生产严重缺水，另一方面强烈的水土流失又使得大量地表径流流失。
Soil erosion that on the other hand the village life and agriculture produce to be short of water seriously, on the other hand the mightiness again make in large quantity watch flow run off.
川中丘陵区地表以紫色沙页岩风化形成的紫色土壤为主，基岩风化剥蚀过程与流失过程交替进行。该区垦殖率高，植被盖度低，地形破碎，土地利用结构复杂，土壤侵蚀严重。
Soil in hilly regions in the middle of Sichuan Province is mainly a type of purple soil which has been developed from the purple shale rock.
川中丘陵区地表以紫色沙页岩风化形成的紫色土壤为主，基岩风化剥蚀过程与流失过程交替进行。该区垦殖率高，植被盖度低，地形破碎，土地利用结构复杂，土壤侵蚀严重。
Soil in hilly regions in the middle of Sichuan Province is mainly a type of purple soil which has been developed from the purple shale rock.
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