Observations of atmospheric methane-sulfonic acid(MSA) and non-sea-salt sulfate(nss-SO42-) from December 2010 to November 2011 at Zhongshan Station are presented in this paper. MSA and nss-SO42- average concentrations were 24.2 ± 37.9 ng·m-3(0.5–158.3 ng·m-3) and 53.0 ± 82.6 ng·m-3(not detected [n.d.]) – 395.4 ng·m-3), respectively. Strong seasonal variations of MSA and nss-SO42-, with maxima in austral summer and minima in winter, were examined. The high concentrations of sulfur compounds in December may be attributed the dimethyl sulfide(DMS) emissions from the marginal ice zone, when open water near the sampling site was important in impacting the sulfur species of January and February at Zhongshan Station. In austral winter, there was almost no phytoplanktonic activity in offshore waters, and atmospheric sulfur compounds likely had long-range transport sources.
Taking a typical active export-oriented region Zhejiang as an example, this paper tries to evaluate its Coordinated Development Degree (CDD) form 1997, focusing on the characteristics of its export-oriented economy and regional environment. The results show that Zhejiang's CDD has kept increasing steadily after its slight drop in 1998. Finally, four measurements are proposed to promote sustainable development, including increasing and equalizing region's environmental investment, changing pollution-intensive export structure to avoid restricting the whole industrial structure, restricting simple spatial translocation of high-material consumption, high-energy consumption and high-pollution industries, etc.
