| 宁波市水土保持区划研究 |
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| 引用本文： | 蓝雪春,程岚.宁波市水土保持区划研究[J].中国水土保持科学,2017(1):141-147. |
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| 作者姓名： | 蓝雪春 程岚 |
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| 作者单位： | 浙江省水利水电勘测设计院,310002,杭州 |
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| 基金项目： | 宁波市水利局专项经费项目“宁波市水土保持规划研究”(W1325541) |
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| 摘 要： | 宁波市的水土保持区划工作始于2000年.当时主要依据宁波市地形地貌特点的水土保持区划,已不能适应新时期水土保持工作的需求.为科学指导宁波市今后的水土保持工作,在全国水土保持三级区划的基础上,结合宁波市的自然条件、水土流失发生发展趋势和社会经济发展对水土保持的需求,有必要重新进行水土保持分区.作者采用叠图分析法,将全市划分为北部农田防护水质维护区、中部人居环境水质维护区、东南土壤保持水质维护区和西部水源涵养生态维护区等4个不同的水土保持分区.北部农田防护水质维护区,重点加强耕地、园地和林地等具有重要生态功能土地的保护,改善平原河网水质;中部人居环境水质维护区,重点加强城市开发建设中土石弃渣和泥浆处置的管理,构建生态走廊,改善人居环境和河湖水质;东南土壤保持水质维护区,重点改造治理低质林地,完善沿海防护林建设,对经济林园地实施保土耕作措施,提高土地利用综合效益;西部水源涵养生态维护区,重点采取封山育林措施,充分发挥植被拦截泥沙、调蓄径流、涵养水源和治理面源污染的能力.通过合理的区划,以期科学指导宁波市今后的水土保持工作.
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| 关 键 词： | 水土保持 区划 宁波市 |
Study on the regionalization of soil and water conservation in Ningbo City |
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| LAN Xuechun,CHENG Lan.Study on the regionalization of soil and water conservation in Ningbo City[J].Science of Soil and Water Conservation,2017(1):141-147. |
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| Authors: | LAN Xuechun CHENG Lan |
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| Abstract: | Background] Regionalization of soil and water conservation in Ningbo began in 2000.At that time,Ningbo was divided into three different regions of soil and water conservation:plains region of Center and North Ningbo,harbors and hills region of South-west Ningbo,and mountains region of West Ningbo,which has played a positive role to guide the soil and water conservation work in Ningbo.After more than 10 years of development,the regionalization based on topographical features of Ningbo cannot meet the demand of soil and water conservation work in the new era.In order to guide future period of soil and water conservation work in Ningbo,it is necessary to re-do the regionalization of soil and water conservation.Methods] We applied overlay-analysis to re-divide the regions based on the third-level regionalization of soil and water conservation in China,combining natural conditions,water and soil erosion trends,social-economic development demand for soil and water conservation with the maps of terrain slope classification,annual rainfall distribution,current land use,forest resources distribution,city and urban development,land use regionalization,water resources project,ecological protection plan,and current soil erosion.Results] We divided Ningbo City into 4 different regions as such:the farmland protection and water quality maintenance region of North Ningbo,the human habitat and water quality maintenance region of Center Ningbo,the soil conservation and water quality maintenance region of South-east Ningbo,and the water conservation and ecological protection region of West Ningbo.Moreover,the prevention and control strategies of water and soil erosion are proposed.Conclusions] In the farmland protection and water quality maintenance region of North Ningbo,the protection of cultivated lands,garden lands,and woodlands with important ecological functions should be enhanced,and the mid-low-yield lands should be ameliorated to be high quality prime farmland,and the water quality of plain river networks should be improved.In the human habitat and water quality maintenance region of Center Ningbo,the management of waste soil and residue as well as waste mud treatment from city construction should be strengthened,the ecological corridors should be built,and the environment for human habitat and the water quality of river and lake should be better shaped.In the soil conservation and water quality maintenance region of South-east Ningbo,focus is on the improvement of low-quality forest and construction of coastal protection forest,and the efficiency of comprehensively utilizing the land should be increased by implementing the measures of soil conservation on economic forest lands.In the water conservation and ecological protection region of West Ningbo,focuses are on the measures of enclosing forestland and more afforestation in order to play full capacity of vegetation in silt detention,runoff regulation,water conservation,and control non-point pollution. |
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| Keywords: | soil and water conservation regionalization Ningbo City |
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