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Sandy area along the Great Wall in Yulin sand-fixing forest structure and effectiveness studies

Author: GaoChengXiong
Tutor: ZhuShouJun
School: Northwest University of Science and Technology
Course: Utilization of Agricultural Resources
Keywords: Windbreak and sand fixation Structure Eco-efficiency Mu Us Sandland
CLC: S727.23
Type: Master's thesis
Year: 2008
Downloads: 100
Quote: 0
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Abstract


Landscape ecology , systems engineering and sustainable development theory, through the investigation of regional standards combined with the location test , the individual technologies and comprehensive combination of technical measures , positioning comparative observational and experimental analysis of the combination , the application of mathematical analysis and computer technology , the system studied along the Great Wall in northern Shaanxi Yulin Desert sand-fixing structural configuration and its ecological benefits, proposed to adapt to different site types of shelterbelts and optimized allocation of reasonable structure type model for scientific guidance for anti-desertification projects smooth implementation provides a theoretical basis and technical support , the regional ecological environment has an important and realistic significance. Main conclusions are: ( 1 ) site conditions Yulin area can be divided into an area with three Category 5 16 kinds of types of site conditions , site conditions suitable for the growth of large-scale afforestation and can be planted bushes and grass plants are mainly camphor Son Song, co- Young , flower sticks , riding Lang, Amorpha , Caragana , Salix , sea buckthorn , Artemisia , adsurgens more than 10 species . ( 2 ) District Yulin sand-fixing forest planting density should be controlled at a reasonable 3000 ~ 3500 cluster / hm ~ 2 is appropriate, the forest cover was maintained at about 0.33 to 0.55 . Windbreak and sand fixation structure type shrubs and grasses mixed type should be used to build three-dimensional protective structure , you can get better protection benefits. ( 3 ) fixing forest shrubs Yulin area has a significant eco-efficiency can reduce wind speed and reduce the sediment load , increase soil organic matter, total nitrogen, available phosphorus and other nutrients, thus improving the local environment is important.

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CLC: > Agricultural Sciences > Forestry > Silviculture, tree breeding and afforestation techniques > Tree species, various types of special areas of afforestation > Shelterbelts > Sandbreak Forest
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