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Mu Us Desert Sand Burnet ecological economical Shelterbelt System

Author: YangWei
Tutor: DuDeYu
School: Northwest University of Science and Technology
Course: Forestry
Keywords: Mu Us Sandland Yulin District Ecological Economy Shelterbelt
CLC: S727.2
Type: Master's thesis
Year: 2009
Downloads: 52
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Abstract


In this paper, ecological economics, 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 combined application of mathematical analysis methods and computer technology, systematic study of the Mu Us Sandland Burnet Desert ecological economical Shelterbelt structural configuration mode, and the establishment of ecological and economic Shelterbelt System integrated ecological benefit evaluation index system, a comprehensive ecological benefits proposed shelter from the ecological to the economic transformation of technical methods for scientific guidance for the smooth implementation of anti-desertification project provides a theoretical basis and technical support, the regional ecological environment construction and sand areas and economic development has important practical significance. Main conclusions are: (1) In this paper, the C language programming, establish a dynamic simulation model to simulate the Mu Us Sandland districts based industrial structure and the industrial sector structure prediction of various industry trends. Meanwhile, forestry internal structural adjustment, based on the use of quantitative methods affect the forest species ecological, economic factors were analyzed, according to site structure proposed windbreak and sand fixation optimal allocation of type 21, shelterbelts 20, timber 8, the waters shelter 9, protection forests 11, retaining Mullin 1. (2) using the analytic hierarchy process, combined with expert information, both quantitative and qualitative combining solid sarin determine the weight of eco-efficiency indicators, the establishment of judgment matrix, an important eco-efficiency indicators derived values ??descending order: sand-fixing efficiency ( 0.42080) light use efficiency (0.2149), water use efficiency (0.1858), kind of community dominance (0.0905), soil improvement benefits (0.0576), a small climate benefits (0.0314); determining the weights in the index and data normalized basis on the ecological benefits of each species calculated index value, Amorpha (0.61), Hedysarum (0.47), Salix (0.39), there is good windbreak and sand-effective, high system productivity and water use efficiency. (3) difficult site without afforestation in semi-arid saline irrigation and drainage conditions, soil salinity content of 0.24-0.91%; abandoned lands salinization of soil salinity 2.79-16.573%, two saline water and salt movement in saline class law: In each monthly evaporation than precipitation, soil salt accumulation has been in a state of salt accumulation and strong; alternating wet and dry season during the year, resulting in a seasonal soil salt accumulation and desalination; micro-topographic position height exposed area, including High salt.

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