水土

The counter measures of solving these problems were suggested as follows: firstly, using water resources and fertilizer reasonably and choosing salt tolerance crops to control saltinization; secondly, choosing acid tolerance feed and using the chemical method to control acid rain; finally, soil erosion could be controlled by bioremediation.

对于三种生态环境问题，提出的控制对策如下：盐渍化的治理对策为合理用水、施肥，种植合适的耐盐作物；酸沉降治理对策为种植抗酸作物和采用化学调控方法降低降对作物的损害；水土流失使用生态恢复工程和生态重建工程进行治理。

Today's earth faces many a problem of environm en t and ecosystem:"greenhouse effect",chemical pollution,acid rain,sand dust dev il,went short of water wealth,water and soil bereave,soil fallen into desert,spe cies eradication,forest demolish,etc.

今天的地球面临着许许多多的环境和生态问题，"温室效应"、化学品污染、酸雨、沙尘暴、淡水资源匮泛、水土流失、土地沙漠化、物种灭绝、森林破坏等等。

Under the same conditions of illumination and the concentration of nutrition, copper chlorophyll has advantage of no-repollution, no-poison, better effect, long-time effect of restrain and so on, comparing with copper ion, and the mechanism that copper chlorophyll and copper sodium chlorophyllin have very strong influence to growth of microalga is analyzed in the theory.

同时，本文也研究了太湖底泥在不同水土比、好氧与厌氧条件下的N、P营养释放规律；太湖底泥粒径分布与其中的N、P、有机物分布之间的关系；模拟太湖的不同疏浚条件，探讨了水体生态系统的演变规律。

Clear-cutting large areas of forest at once and constructing steep switchback roads to harvest the timber have resulted in erosion and stream habitat destruction.

为了木材而大面积彻底砍伐森林以及修建陡峭的山路造成了水土流失和河流生态系统的破坏。

The mechanism of new soil erosion and other calamities casused by the mine of coalfield was also described.

如何合理开发这块"黑色宝库"，保护该区的生态环境，防治新的水土流失和土地沙化，使该区的社会经济与自然环境协调发展，是关系到该区地方经济振兴的大事。

So in the first place it is necessary to construe Baoweituan with the environment in Hebei Province .

在认识河北省地方保卫团之前，首先对天子脚下的这方水土做了简单的分析。

The restoring vegetation is the basic way to contral the soil erosion in the district.

恢复植被是该区域控制水土流失的根本出路。

The main environment geological question is: The earth"s crust where the faultage and earthquake are active is unstable; collapse , landslide, mud-rock flow and soil erosion ; The underground karst subsides, seepage question; Basic rock expand, expend and compress soil body, the salt deposit corrode out of shape and groundwater"s corrodent harm; The soft soil question of basin; The soft rock body, cracked rock and the weathering rock are relatively poor stability; High and cold regional highways and railways" frozen soils freeze and melt calamity problem; The around rock of tunnel are unstable because of the coal seam gas, spring water, underground developed area; Project cutting slopes, constructed abandon soil and reservoir, lake"s ecology geological environmental protection issue; Thedangerous shoal of the channel % submerged reef question; The problem of rebuilding channel project and dock etc.; And the problem of unstable ground and groundwater corrosivity during building airport; At the same time, with the international big pathways" implementation and completions of constructions, adjusting the cities and counties" constructions , the crowd occupy changing , the cultivated land distribute changing and the adjustments of structure, will cause local environmental geological issues outstanding; According to multiple statistical analysis , value calculate and integrated appraise result, in the northwest and southwest of Yunnan, the traffic relatively low density, traffic engineering is relatively weak impact on environment, It is the area where a environme

主要的环境地质问题是：活动性断裂、地震带的地壳不稳定；崩塌、滑坡、泥石流及水土流失；地下岩溶塌陷、渗漏问题；基础岩体膨胀、胀缩土体、含盐层侵蚀变形和地下水的腐蚀危害；盆地软土问题；软弱岩体、碎裂、风化岩体稳定性较差；高寒地带公路、铁路建设的冻土冻融灾害问题；煤层瓦斯、涌水、地下采空区等隧道围岩不稳定问题；工程切坡、施工弃土及水库、湖泊生态地质环境保护问题；航道险滩、暗礁问题；渠化工程、码头等库岸再造问题；以及机场建设中的不稳定地基及地下水腐蚀性问题；同时，随着大通道建设的实施和完成，城镇建设的调整、人群居落的变化和耕地分布及结构的调整组合，都可能造成局部环境地质问题的突出等等。经多元统计分析数值计算、综合评价结果，滇西北、滇西南地区交通密度较低，交通工程对环境的影响程度较弱，是环境地质状况好的区域；有主要高原湖泊分布区的，包括昆明、个旧、文山的滇东南区域，环境地质状况较好；大姚、楚雄、篙明及会泽、昭通一镇雄的区域，即滇中北部中生界红层和滇东北岩溶区，环境地质状况中等；而包括保山、德宏、大理、临沧的滇西地区及景东一墨江以东、双柏一石屏一河口以西及东川一寻甸一曲靖地段的滇中一滇东地区，环境地质状况较差。云南国际大通道建设涉及全省区域，如何利用地质环境、实现可持续发展，就必须依赖于国际大通道建设与地质环境之间良性关系的建立。应本着对区域地质环境客观存在的科学认识原则、建设过程中环境效益优先的可持续发展原则、法制性原则、对大通道建设中环境地质的因地制宜及其可防治性原则。并且从组织管理、不同类型大通道、不同环境地质问题类型等方面，提出了对策措施。最后，提出了建立国际大通道建设与环境地质良性关系的宏观建议。

As a part of "Outstanding Young Researcher project- Water Erosion Predicting model", the purpose of this study is to do research on the method for estimating Cover and Management Factor in China, to evaluate the effects of crop cover in different stages by estimating soil loss ratio of individual crop stage period, and to compare the effects of different land use patterns by their average annual value of C factor.

本研究作为杰出青年基金项目《土壤水蚀预报模型研究》的一部分，目的在于探讨我国覆盖与管理因子的计算方法，估计不同耕作制度下农地多年平均C值；通过估计不同农作期土壤流失率评价作物发育不同时期对土壤侵蚀的作用；通过估计多年平均覆盖与田间管理因子分析不同土地利用方式的水土保持效益。

It is reported that 70 percent of MPM has had a history of asbestos contact. There is a thin layer of crocidolite in the surface soil somewhere in Da Yao County of Yunnan province. Because the natives don"t know asbestos" hazard, clay containing asbestos was dug in order to make asbestos stoves, build roads, brush walls, combining the crusts destruction, much deforestation makes asbestos explosion .

云南省大姚县某些地区地表中夹着薄薄的一层青石棉，由于当地居民不知道其危害，大量开挖含青石棉的粘土做石棉炉、铺公路、刷墙等，地表破坏，以及大量砍伐森林，造成水土流失，石棉暴露，含棉岩自然风化，雨水冲刷成为天然污染源。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。