Ecosystem services supply and consumption——A case in Yellow River watershed,China
This study analyzed the relationship between the supply and consumption of ecosystem services of the food and fuelwood supply in the Yellow River watershed based on the lands use data and statistics data in county-level.The temporal and spatial differences of the food and fuelwood supply and consumption were also discussed.The results showed that there was an upward trend of food supply services in the Yellow River watershed from 1995 to 2008.The grain,oil and meat production increased by 1408×104 tons,112×104 tons and 140×104 tons respectively.The proportions of counties of which production increased accounted for 69.9 %,54.7% and 68.3% for the whole watershed.The increase of productivity was a key factor for this trend.The satisfaction state of provincial food supply and consumption was improved,and ratio of the surplus area was more than half.There were differences between the spatial patterns of the three kinds of food.The grain production failed to satisfy the consumption in some parts of Qinghai and Sichuan provinces.The oil and meat supply failed to satisfy the requirements of nutrient consumption.During 1995-2000,there were no huge changes of spatial pattern of firewood supply in the region.The total fuelwood supply decreased by 2.08%.However,due to the reduced fuelwood consumption,the consumption remained satisfiable at relatively high level;67% of the counties had a surplus supply of fuelwood.Through the analysis of relationships of regional ecosystem services supply and consumption and the temporary and spatial pattern,the research will promote the rational consumption pattern of ecosystem services for the locals,and provide a scientific basis for the policy makers to improve human well-being.
ecosystem services consumptionfood supplyfuelwood supplyYellow River watershed
NETL
NSTL
万方数据
维普
