|
In the study of changes in vegetation in Baoji City, Shaanxi Province, the new-generation computer, within the research span between 2005 and 2019, applies MODIS remote sensing image data is processed and analyzed with the technical support of next-generation computers for processing and analyzing, calculates the surface vegetation index, dissects changes and characteristics of vegetation in Baoji City, extracts the change distribution types, and outputs a complete thematic remote sensing image map. Fast response to types of changes in the vegetation area and the distribution of vegetation changes and characteristics, which can quickly visually reflect and present the true ecological status of the vegetation in the surface area of Baoji City, thus satisfying the ecological environment monitoring of Baoji City for surface ecology and laying the foundation for the construction and development of Baoji City's surface ecological monitoring network in recent years. Research outcomes proved a trend of substantial improvement in surface vegetation coverage in Baoji City in 2019 compared with that in 2005. Very few cities and regions registered large areas of vegetation degradation. In January 2019, compared with January 2005, the vegetation in more than half of the area showed obvious improvements in moderate degradation; Compared with April 2005, in April 2019, due to the construction of urban infrastructure or other public facilities, 4.97% of the vegetation coverage in some areas showed moderate degradation; Compared with July 2005, in July 2019, the moderately degraded vegetation coverage in nearly half of the areas remained basically unchanged, and 7.09% of the regional degraded coverage area had significantly improved vegetation coverage; Compared with October 2005, in October 2019, the area of some areas where vegetation degradation coverage remained basically unchanged accounted for 38.04%. Although the area of some areas where vegetation coverage showed moderate degradation and improvement accounted for 47.60%, it was still only 3.66% of the area. Area vegetation coverage showed significant improvement. Accelerated industrial and urbanization construction in Baoji City, the southern part of Fengxiang County in Anhui Province, the central part of Baoji County, the central part of Qishan County, most of Fufeng County and the northern part of Emei County in Sichuan came with striking vegetation degradation. Other counties showed no obvious improvement in vegetation coverage at all.
|
