. China Ecosystem Services and Poverty Alleviation Situation Analysis and Research Strategy - Final Report to the ESPA Programme. ESPA China Consortium, CAAS, Beijing, China. Section A: Status of poverty and ecosystems in China of China act as a net carbon source, with a loss of Pg (Xie et al, 2007). Large regional discrepancies exist, however, with eastern and southern China acting as a carbon sink, whilst northwest China is a major source; the northeast and southwest to a lesser extent. The highest SOC losses were experienced on the QTP. Disease and pest regulation There is little avail
. China Ecosystem Services and Poverty Alleviation Situation Analysis and Research Strategy - Final Report to the ESPA Programme. ESPA China Consortium, CAAS, Beijing, China. Section A: Status of poverty and ecosystems in China of China act as a net carbon source, with a loss of Pg (Xie et al, 2007). Large regional discrepancies exist, however, with eastern and southern China acting as a carbon sink, whilst northwest China is a major source; the northeast and southwest to a lesser extent. The highest SOC losses were experienced on the QTP. Disease and pest regulation There is little available information on the role of ecosystems in regulating disease in China. However, water run-off that ensures fast flowing rivers has been suggested to be a factor in the regulation of schistomisoasis, and there are concerns that the increase of dams in China to control flooding will cause an increase in the incidence of this parasite (Chen et al, 2004). Research has suggested that the number of malaria cases is significantly reduced if rice paddies are stocked with edible fish and nitrate levels kept low. Rice paddies are also a breeding ground for Japanese encephalitis (MA, 2005). Similarly, there is little available information on the role of ecosystems in regulating pests in China. However, it has been suggested that changes in forest composition have been partly responsible for insect infestations that have caused the loss of more than 10 million m3 timber (Li, 2004). Supporting services Supporting ecosystem services are those that are necessary for the production of all other types of ecosystem services, and include photosynthesis, nutrient cycling and soil formation. They can also be called ecosystem processes. Whilst their functioning largely determines the status of all other ecosystem servicesthey have received very little attention relative to their fundamental importance to China and the Chinese economy. NPP&NEP The total Net Primary Production (NPP) of China's
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