中国矿业
中國礦業
중국광업
CHINA MINING MAGAZINE
2013年
z1期
45-49
,共5页
向量自回归%动力煤进口规模%脉冲相应函数
嚮量自迴歸%動力煤進口規模%脈遲相應函數
향량자회귀%동력매진구규모%맥충상응함수
VAR model%thermal coal import%impulse responses function
煤炭是我国能源主体,动力煤又是煤炭的主体。然而2006年以来动力煤进口规模不断加大,2009年成为净进口国,对我国国内煤炭生产造成严重冲击。本文运用格兰杰因果检验,协整分析及VAR模型研究影响我国动力煤进口主要因素,发现表明国内经济增长、国内市场供应、国内外价格比、国际航运价格以及出口退税均是我国动力煤进口规模的格兰杰原因,而进口关税并不是进口规模的格兰杰原因。6个变量间有长期的均衡关系,能对短期的偏移进行修正。动力煤进口规模增加属于“价格驱动型”,国内外动力煤价格比对贡献度最大,达到49.98%。其次是出口退税率,贡献度为11.02%。经济增长,国际航运价格与国内市场供应的贡献度依次为3.59%,1.86%和0.65%。最后就提高动力煤价格竞争力及调整动力煤贸易政策角度提出相应建议。
煤炭是我國能源主體,動力煤又是煤炭的主體。然而2006年以來動力煤進口規模不斷加大,2009年成為淨進口國,對我國國內煤炭生產造成嚴重遲擊。本文運用格蘭傑因果檢驗,協整分析及VAR模型研究影響我國動力煤進口主要因素,髮現錶明國內經濟增長、國內市場供應、國內外價格比、國際航運價格以及齣口退稅均是我國動力煤進口規模的格蘭傑原因,而進口關稅併不是進口規模的格蘭傑原因。6箇變量間有長期的均衡關繫,能對短期的偏移進行脩正。動力煤進口規模增加屬于“價格驅動型”,國內外動力煤價格比對貢獻度最大,達到49.98%。其次是齣口退稅率,貢獻度為11.02%。經濟增長,國際航運價格與國內市場供應的貢獻度依次為3.59%,1.86%和0.65%。最後就提高動力煤價格競爭力及調整動力煤貿易政策角度提齣相應建議。
매탄시아국능원주체,동력매우시매탄적주체。연이2006년이래동력매진구규모불단가대,2009년성위정진구국,대아국국내매탄생산조성엄중충격。본문운용격란걸인과검험,협정분석급VAR모형연구영향아국동력매진구주요인소,발현표명국내경제증장、국내시장공응、국내외개격비、국제항운개격이급출구퇴세균시아국동력매진구규모적격란걸원인,이진구관세병불시진구규모적격란걸원인。6개변량간유장기적균형관계,능대단기적편이진행수정。동력매진구규모증가속우“개격구동형”,국내외동력매개격비대공헌도최대,체도49.98%。기차시출구퇴세솔,공헌도위11.02%。경제증장,국제항운개격여국내시장공응적공헌도의차위3.59%,1.86%화0.65%。최후취제고동력매개격경쟁력급조정동력매무역정책각도제출상응건의。
Thermal coal is the main body of coal ,which is major energy source in China .However ,the scale of thermal coal import continued to increase since 2006 .China became a net importer at 2009 .This had a severe impact on domestic coal production .Based on cointegration test ,VAR model and impulse responses function ,It showed that domestic economic growth ,market supply ,prices ratio ,international shipping prices and export refunds were Granger cause of thermal coal import scale ,but import duties was not .There was a long-term equilibrium relationship between six factors .Price ratio contributes most part to the scale of import ,reaching 49 .98% ,followed by export tax rebate rate (11 .02% ) .The contribution of economic growth ,international shipping price and market supply were respectively 3 .59% ,1 .86% and 0 .65% .Fianlly the paper makes recommendations accordingly in term of improving price competitiveness and adjusting trade policy of thermal coal .