摘要
本文运用LMDI方法将中国用水量变化的影响因素分解为人口效应、区域人口分布效应、区域经济发达效应、区域产业结构效应和区域技术进步效应。研究发现,技术进步和产业结构调整都是抑制用水量上升的影响因素,但是技术进步更加显著。产业结构效应在各省份第一产业内部影响最大,而技术进步效应却存在较大差异;经济增长是用水量上升的主要推动力,中部最显著;人口规模扩大促进了用水量上升,但是影响较小,而人口分布(流动)变化促进中国用水量上升比较显著。另外,区域经济份额相对变动对用水量的下降起到正向作用,但是各省份之间存在较大差异,东部地区经济份额提高促进了用水量上升。因此,各省份需要加强节水技术创新,更加重视农业节水;优化升级产业结构,由耗水强度大的农业向耗水强度小的第二、三产业转移;东部发达地区加大对中西部欠发达地区资金、技术等支持。
The LMDI method was used to decompose the factors influencing water use in China into a population effect,regional population distribution effect,regional economic development effect,regional industrial structure effect and regional technical progress effect. We found that technical progress and industrial structural adjustment are two factors inhibiting the increase in water use,especially technical progress. Industrial structural effect of primary industry is the most significant factor in all provinces,but technical progress effect varies across provinces. Economic growth is the main impulse for rising water use which can be seen as the most manifested phenomenon in medium regions. An extended population promotes water use,however little effect working out;population distribution（folw） develops water use in China. Changes in regional economic share exert great influence on decreasing water use,but there is a significant difference between provinces. The rise of the economic share of the eastern region promotes increasing water consumption and proper measures should be taken to solve this unbalanced situation. Provinces should cement water- saving technical innovation and put high value on agricultural water saving.The country should optimize and upgrade industrial structure,transferring agriculture that consumes large sums of water to secondary and tertiary industries with relatively low water use.The eastern region needs to reinforce the financial and technical support towards the lesser developed central and western regions.
出处
《资源科学》
CSSCI
CSCD
北大核心
2016年第7期1308-1322,共15页
Resources Science
基金
水利部中央分成水资源费项目(1261320212020)
关键词
用水量
区域异质性
人口分布
LMDI
中国
water use
heterogeneity of the regionals
population distribution
LMDI
China
