Abstract:Along with the development of human beings society and production construction, the problems of population, resources and ecological environment get more and more contradictory one another. Shanxi Province is one of the energy resources and heavy chemical industrial bases in China. For many yeasr, the waste solids and waste piles have been discarded at random during mining, constructing of traffic and electric power project, etc. It has damaged the vegetation and water resources, and has made a new serius loss of water and soil. Thus, the life of the people and the realization of four modernizations as well might be effected and endangered directly. At present, a lot of factories, mines have begun to pay attention to treat the waste piles and solids, and adopted engineering and biological measures to conserve soil and water. Synthetic utilization of waste piles and solids has gotten valuable experiences.

Abstract:Using the remote sensing technique, that is, by using false colour satellite image interpretation, we find out the present situation of soil and water conservation in Dabieshan mountains in Anhui Province and put for-ward the way to control the loss in policy and step. Especially, the forest for containing water should be planed in the upper area of six large reservoirs in Anhui Province in order to adjust the rainfall by nature and man-made ways. This benefits is preventing flood in reservoir area as well as strengthening agricultural reserve forces in Pi-Shi-Hang area, and obtaining social and ecological results on a grand scale.

Abstract:Now, some units and individuals defy the national statutes, do not adopt any measures of soil and water conservation, but for allowance, and destruct wildfully natural resources, resulting in heavy obnoxious tendencies. It is known from a rough investigation in 12 Municipality of Liaoning Province that the destructive activities include reclaiming land, in disorder exploiting mining, digging field for construct road and building house arbitrarily; planting ginseng from piedmont to hilltop; overstocking excessively; indiscriminately felling of trees; and management in plundered ways, etc.

Abstract:The government of Acheng City pays attention to adopting unified complete measures to prevent man-made destruction, including to conduct widely propaganda of "The Law of Soil and Water Conservation" and "The Detailed Regulaitions of Soil and Water Conservation", to strengthen people's legal idea,to deal with typical cases seriously,which causes man-made destructions,so as to consolidate and expand the victories in harness of soil and water; to adopt decisive and powerful measures to checkmate the events of destroying forest and land; to fully depend on laws and administrative decrees to supervise the perfect runing of the concrete policies; to strengthen building of complete organization of soil and water conservation and set up local rules and civil law; to coordinate everysides to prevent manmade destructions. In recent five years,they basically stop the evil trends of man-made destructions.

Abstract:Zhongtiaoshan nonferrous metallurgy company pays attention to conserving soil and water and protecting environment as hard as to production. Since the company was constructed, they do many good things for protecting environment in mining area. The company invested 30 million yuan for building four large and middle warehouses with total of 0.17 billion cubic metre for storing waste ore dregs, and has stored 40 million tons waste; They invested 0.4 million yuan and 0.2 million laboures for building farmland using the warehouses over time. They invested 10 millon yuan for building five stations of water purification and so on, it may save waste water 10 million tons per year; They built 15 floodproofing dams on main river in mining area,5 thousand metre guiding flood channel,1.5 thousand metre long dyke,and 18 bridge openings to form an effective floodproofing system.They afforested 56 thousand trees and built 0.2 millior, square metre lawn which occupies 83 percent land where needs to plant grass.

Abstract:Taiyuan Steel Corporation is a large integrated complex. A great deal waste ore dregs is excreted in it's product process.About 7.5 million cubic mete and 11.5 million ton waste ore dregs has been piled up like a little mountain since the steelworks was constructed 50 years ago. The dregs mountain affects on the regular excreting and it is a serious pollution resource to Taiyuan City. Since 1983, the company has comprehensively utilized the waste ore dregs, for several years hard work,they have utilized about 2/3 waste and taken on a new look for the corporation. In last four years, they didnot demand for one cent from goverment , but bring about 41.687 million yuan for the country by coomprehensive utilization of waste ore dregs. They yield notable results.

Abstract:The Lezhi county was used to be poor. But from 1982 on,this county's eco environment has beeimproved, the yield of agriculture has been stable and high, the contradictons among fertilizer, fodder and fuel have beesolved, the agricultural reserve forces have been strengthened, and people have enough food and daily necessities boverall planning, comprehensive harness, and centralized and successive managing the soil and water loss.

Abstract:In this paper, some analyses had been done by combining theory with practice based on a case study of a village which is located in Xi-Hai-Gu region, the very well-known poor region in our country.Soil and water loscaused by improper land use as usually saying, but why people do not use their land properly even today? The analysshow that. firstly the key problem refers to the population capacity of environment in an area; secondly, the central link is man-land relaticnship in land use, from which the equation, m_i=a_i×p_i can be summarized and it also predicates the population capacity of an area to be limited; and thirdly a perfect model of comprehensive controlling may be reached by two steps, the first is planting grasses, shrubs and trees and the second is controlling with engineering.

Abstract:A notable achievement has been made in the afforestation for soil and water conservation at the head of Dujiangyan irrigation since 1981. About 347 thousand trees have been afforested on 435 hectares. Besides the ability of conserving soil and water, part of the trees have been cut down, meanwhile make up excess the wood needs of local project. The afforestation initially shows economic, ecological and social benefits. The office of Dujiangyan afforestation has been elected as a model unit by the committee of Chengdu afforestation since 1982. Their experience is: the leaders take the matter seriously, and forest manage depends on law and mobilizing voluntary afforest, meanwhile, they pay attention to publicize the importance and strengthen of the afforestation result.

Abstract:The synthetical evaluation about that the Three Gorges Dam affects on the eco-environment of Yangtze Valley draws conclusions, they are, the unfavourable results are much more, the effects of disadvantages surpass the effects of benefits, no good result can be utilized until the project ended, but the disadvantageous effects will emerge immediately when the dam is built, however, some of them will be forever. At present, the ability of holding people has been beyond the limit in the Three Gorges area, besides that,if the big dam is built,so much effective land will be inundated, thousands of people would have to emigrate from the reservoir area. Certainly it can only be a disastrous event to have the Three Gorges Project.

Abstract:In the flood season of 1987, rockfal and landslide took place for 58 times in succession, but no one is harmed in Zigui county of Hubei Pro vince, which is a wonder created by the Party, the authorities and the masses in rushing to-deal with the emergency and fighting natural cala mities. It is thought that the reason of the collapsing and landsliding is mainly related to the effect of geological structure, topography and geo graphy, the damage of plantation, the intensive rainstorms, unadoptable excavation in construction and the unstable side slope immersed by watern e reservior of Guozhouba Dam, etc.

Abstract:In this paper the authors simply introduce the environmental-geological conditions and analyse the forming-mechanism of rock-fall hazard of Nanmenwan, and make a good suggestion for environmental improvement in this area.