It also stipulates that the total emission of heavy metals, total phosphorus (TP) and total nitrogen (TN) will be controlled in sensitive watersheds, coastal areas, and regions, although without a detailed quantitative target. Another important national policy is the national climate change policies and actions which was issued in November 2010, with a more ambitious objective of reducing the intensity of carbon
dioxide emissions per unit of GDP in 2020 by 40-45% compared
with the level of 2005 (Liu et al., 2012).