| 1. | Problem on calculation of soil and water conservation benefit 浅谈水土保持效益计算中存在问题及解决途径 |
| 2. | Analysis on soil and water conservation benefit of level terrace under different rainfall condition in loess hilly region 黄土丘陵区不同降雨条件下水平梯田的减水减沙效益分析 |
| 3. | This component will develop grazing systems and rangeland conservation technology to demonstrate the production and conservation benefits planned grazing management 这个分项目要建立放牧制度和草场保护技术,示范在这个放牧管理制度下的生产和保护效益。 |
| 4. | This paper classifies the soil and water conservation benefit of the project into water conservation benefit by forest and soil erosion reducing benefit 本文将小水电代燃料生态保护工程的水土保持效益分为两类:一是保护森林,涵养水源的效益;二是减少土壤侵蚀的效益。 |
| 5. | " in newspaper columns opposing the canadian proposal last year , mr . munro said the american legislation had produced only modest conservation benefits , while costing thousands of logging jobs to save species like the spotted owl 去年,在反对加拿大的环保提案的报纸专栏文章中,芒罗先生说,美国的立法仅产生了有限的环保效益,而花费了几千个代木工作岗位的代价来保护像斑点猫头鹰这样的物种。 |
| 6. | Using cost - benefit analysis methods of environmental economics including the market valuation methods , opportunity cost methods , shadow engineering methods and restoration expenditure methods ; this paper evaluates the soil conservation benefit of ccfg in yuanzhou district of guyuan city 本文采用环境经济学中费用效益分析的市场价值法、机会成本法、恢复费用法、影子工程法等估算了固原市原州区退耕还林还草工程的土壤保持效益。 |
| 7. | And study the quantified methodology of self - restraint the source , the soil erosion reducing , the soil nutrient prediction and reservoir mud alluvial prediction , and applies the model count the water conservation benefit in lingchuan county magedang experimental unit in shanxi province 并分别探讨了涵养水源、减少土壤侵蚀、减少土壤养分流失及减少水库泥沙淤积的效益量化计算方法,以山西省陵川县马屹当小水电代燃料试点工程为例进行了水土保持效益的实例计算。 |
| 8. | The study outcomes show that the soil conservation benefit gained through typical conservation measures for the upper stream of miyun reservoir is 62 . 7 % and benefit of pollutant loss reduction between 25 % 40 % and ; the typical measures exert remarkable function on the aspects of area - source pollution control and water source protection 研究结果表明:水库上游典型水保措施的保土效益达62 . 7 % ,减少污染物流失效益在25 % ~ 40 %之间;典型水保措施在减少入库泥沙、减少进入水体的污染物等控制面源污染和保护水源方面发挥了显著的作用。 |