CAJ | 학술논문

长春市玉米种植面积约占全市粮食种植面积的60%。通过对长春市1998-2008年玉米虚拟水量的计算与分析,探讨其时空分异规律,为长春市玉米生产的可持续发展提供科学依据。11年来长春市玉米虚拟水量呈现不断波动趋势,分别在1999年、2004年和2007年出现高峰值,2003年呈现最低值。对比分析1998年、2004年和2008年五县市区玉米虚拟水量的空间分布,1998年五县市区虚拟水量只分为四个等级,没有达到第五等级;2004年农安县达到第五等级,位居首位,榆树市虚拟水量仍然为第三等级,排名第2,德惠市和九台市均由第一等级上升为第二等级,排名第三,市区位于第一等级,排名最末。到2008年,榆树市由第三等级上升到第四等级,九台市由第二等级下降到第一等级,其他各县市区虚拟水量等级没有变化。
장춘시옥미충식면적약점전시양식충식면적적60%。통과대장춘시1998-2008년옥미허의수량적계산여분석,탐토기시공분이규률,위장춘시옥미생산적가지속발전제공과학의거。11년래장춘시옥미허의수량정현불단파동추세,분별재1999년、2004년화2007년출현고봉치,2003년정현최저치。대비분석1998년、2004년화2008년오현시구옥미허의수량적공간분포,1998년오현시구허의수량지분위사개등급,몰유체도제오등급;2004년농안현체도제오등급,위거수위,유수시허의수량잉연위제삼등급,배명제2,덕혜시화구태시균유제일등급상승위제이등급,배명제삼,시구위우제일등급,배명최말。도2008년,유수시유제삼등급상승도제사등급,구태시유제이등급하강도제일등급,기타각현시구허의수량등급몰유변화。
The corn planting area accounts for 60% of the crop in Changchun city.The high utilization of corn planting area is very important to the sustainable development of corn industry in Changchun city.The corn virtual water from 1998 to 2008 is calculated to study the spatial-temporal distribution rules which presented continuously fluctuated trend.The peaks of corn virtual water appeared in 1999,2004 and 2007 and at the lowest in 2003.Compared with the spatial distribution of corn virtual water content in 1998,2004 and 2007 in five counties,the changes was great.In 1998,the corn virtual water was divided into five levels and did not meet the fifth level.In 2004,Nong＇an County reached the fifth level,Yushu County still on the third level,Dehui County and Jiutai County reached the second level,while the urban districts were on the first level.In 2008,Yushu County promoted to the fourth level from the third level,Jiutai County decreased to the first level and other counties remained unchanged.