Study On The Assessment Of Regional Eco-environmental Quality With Aided Analysis Of 3S Technique

In recent years, with rapid development of highway construction, some problems about highway pollution and the impact of the highway on the ecology environment etc. are increasing quickly. Therefore, what methods will be used to reduce and eliminate environmental pollution to the highway and how to restore the ecological damage are important problems .The impact of highway project on construction of the road is identified, predicted, and assessed, and then the measures for removing and minimizing the bad infuence are proposed. The highway construction environmental assessment includes: Social, ecology, Conservation of water and soil, landscape, atmospheric, as well as noise. Eco-environmental quality assessment is the key content of highway construction project's environmental impact assessment.3S technology as an aided analysis means to comprehensively and systematicly study the ecological environmental quality assessment of the highway construction, which isn't commonly used in China. Studying this issue is of strategic importance for the coordinate development of highway construction and environmental protection. Using the 3S technology as a complementary mean, the study interprets the remote sensing image about the land-use types within the 4km on both sides of the highway of Neixiang-Xiping along in Nanyang city of Henan Province by 1:5 million topographic base maps. Then, it certificates the interpreted results from field investigation. And finally, it assesses the quality of the ecological environment along the highway based on the Nation environment monitoring terminus promulgated "ecological quality evaluation methods" in 2003. From calculation and analysis, it's shown that regional ecological environment along the road is fine in quality, good in vegetation cover, rich in water resources, very rich in biodiversity. Ecosystem functions are integral, stable and sustainable in development. In the highway construction process, the stability of the entire ecosystem along the highway will not be impacted seriously, as long as the necessary environmental protection measures and some ecological rehabilitation measures are taken.