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economic ecological forest
相关语句
  相似匹配句对
     Ecological Effect and Economic Development
     发展经济与生态效益
短句来源
     Economic Explanation of Ecological Compensation
     生态补偿的经济学解释
短句来源
     Economic vigour in forestry ecological engineeirng
     关于我国林业生态工程建设中经济活力问题的思考
短句来源
     Ecological and Economic Significances of Closed Forest
     封山育林的生态经济作用
短句来源
     Ecological and Economic Forest and Sustainable Development
     生态经济林与可持续发展
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By means of the documentary method,the field-investigating method, and the method for synthetical analysis, we investigated the staus quo of land use in Pinggu District of Beijing in line with the land use map in 2002 and the 1:10000 remote sensing image in May 2000, synthetically analyzing the feasibility of sustainable and effective land using mode in mountain areas and discussing its ecological environmental impact. The results show that both the mode of effectively sightseeing economic forests...

By means of the documentary method,the field-investigating method, and the method for synthetical analysis, we investigated the staus quo of land use in Pinggu District of Beijing in line with the land use map in 2002 and the 1:10000 remote sensing image in May 2000, synthetically analyzing the feasibility of sustainable and effective land using mode in mountain areas and discussing its ecological environmental impact. The results show that both the mode of effectively sightseeing economic forests and the mode of economic ecological forests are better ones,and that it is very necessary to carry out EEIA for land use reconstruction in mountain areas.Therefore, in this process we should change natural secondary shrubbery in lower mountains into economic ecological forests by plant grafting for reducing soil and water loss,by building rain-collecting projects to make up for the shortage of water during drought, popularizing water-saving irrigation to use water effectively, as well as optimizing the structure of land use in mountain areas and taking ecological measures to prevent agricultural non-point pollution,etc.

通过系统查阅有关文献资料,结合平谷区2002年土地利用现状图和2000年5月1∶1万遥感影像图,对北京市平谷山区土地利用现状进行野外调查,综合分析山区土地资源持续高效利用的可行性,认为发展高效观光型经济林和经济型生态防护林是两种较好的山区土地利用模式.并对山区土地利用模式重建的生态环境影响进行了评价,提出了在山区土地利用模式重建过程中采用植物嫁接技术使低山区天然次生酸枣灌丛转化为经济型生态林;在山前修筑集雨工程以涝补旱,大力推广节水灌溉,保证水资源高效利用;优化山地土地利用结构,采用生物防治法以防止农业面源污染扩大等措施.

This paper had a primary discussion on the ecological and economic benefits of Returning Farmland to Forest Demonstration Area in Karst Gorge in Guizhou,in respect of water conservation,soil-fixation and fertility preservation,carbon sequestration and oxygen production,and the productivity of the economic-ecological forests.

从坡耕地退耕还林后的水源涵养、固土保肥、纳碳制氧、生态经济林产值等4方面入手,对花江喀斯特退耕还林示范区生态经济效益进行了初步评价。

 
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