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Analysis Of The Relationship Between Landscape Pattern Change And Climatic Factors In Karamay Plantation Area

Posted on:2011-09-07Degree:MasterType:Thesis
Country:ChinaCandidate:C HuangFull Text:PDF
GTID:2143360305987940Subject:Environmental Science
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To promote urban transformation and improve the living environment, Karamay City set up an reforestation base 20km away from the city in 2001 and began large-scale afforestation, tree planting area is nearly 3,000 hectares. To carry out large-scale farmland around the same time, the development of large-scale farming. Such a large-scale plantation land reclamation activities lead to a substantial increase in regional vegetation cover, bound to have a certain influence on regional climate. This paper is that the study area as a typical plantation Karamay explore large areas of plantation area construction-induced climate change characteristics. Main tasks:(1)Select TM remote sensing image in 1993, 2000, 2006.Based on 3S technology, complete the image registration, correction, cutting, etc., by visual interpretation method, and extract the classified information, the landscape during the thematic map, lay the foundation for the later work.(2)In ArcGIS9.3 environment, through statistical analysis of the changes in landscape characteristics of the period, while the transfer matrix through the establishment of landscape pattern analysis between the landscape transformation, the results show that the 1993-2006 year, farmland, woodland, wetlands area increased significantly. Forest area in which to reduce early and late as afforestation, forest area has increased rapidly. Grassland landscape area continued to decrease in performance for the degradation of early senescence is plantation, farmland replaced by degradation of abating.(3)Based on years of research 1981-2006 monthly temperature and precipitation data, climate change research area for many years the overall trend analysis, and analysis of phase change, and discusses the characteristics of planting trees around the changes of climate change, the results show that over the years, Karamay climate shows Trend, afforestation, land reclamation, significantly reduced the rate of temperature increase, significant increase in regional precipitation. (4)Based on meteorological data and monthly NDVI over the years that matches the data on meteorological factors and NDVI were the international monthly, seasonal and interannual scales of the occasion had lagged correlation analysis, results show that vegetation change Karamay lag response of the climate response to law precipitation than temperature on the response of NDVI is more significant inter-annual vegetation change on the impact of precipitation in the winter precipitation is more significant in the embodiment.
Keywords/Search Tags:Landscape change, Climate change, NDVI, Hysteresis
PDF Full Text Request
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