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1、生态学报2010,30(17):47654770ActaEcologicaSinica中国能源作物甜高粱的空间适宜分布及乙醇生产潜力1,21,*1,21,21,2张彩霞,谢高地,李士美,盖力强,祁悦(1.中国科学院地理科学与资源研究所,北京100101;2.中国科学院研究生院,北京100039)摘要:甜高粱作为能源作物在世界范围内广受关注,但目前对于甜高粱的空间分布及乙醇生产潜力尚缺乏专门的定量研究。依据气候、土壤、地形和土地利用等空间数据以及相关文献资料,探讨了甜高粱在中国的空间适宜分布。研究表明,我国大部分区42
2、域均可种植甜高粱;其中可种植的未利用地面积达5919.210hm,主要集中于新疆和内蒙古等省区;而最适宜甜高粱种植的42未利用地面积为286.710hm,主要分布在黑龙江、内蒙古、山东和吉林等地。中国未利用地甜高粱乙醇生产潜力较大,在不4考虑其它社会经济限制因素下,总乙醇生产潜力可达11838.510t以上。最适宜未利用地的甜高粱乙醇生产潜力为573.4444102637.810t,平均为1075.210t,可满足中国目前E20乙醇汽油84.8%的需求。如在适宜性较差和较适宜的未利用地种植甜高粱,应充分考虑开发成本和能源投
3、入等问题。关键词:甜高粱;生物乙醇;空间分布;乙醇生产潜力SpatialsuitabilityanditsbioethanolpotentialofsweetsorghuminChina1,21,*1,21,21,2ZHANGCaixia,XIEGaodi,LIShimei,GELiqiang,QIYue1InstituteofGeographicalSciences&NaturalResourcesResearch,ChineseAcademyofSciences,Beijing100101,China2Graduate
4、UniversityofChineseAcademyofSciences,Beijing100039,ChinaAbstract:Asoneofthemiportantbioenergycrops,sweetsorghum(Sorghumbicolor(Linn.)Moenchsubspbicolor)hasattractedtheattentionofscientificcommunityanddecisionmakersoftheworldsincedecades.However,insufficientstudyha
5、sbeendoneaboutthespatialsuitabilitydistributionandethanolpotentialofsweetsorghuminChina.Thispaperamistoinvestigateandevaluatesuitabilityofsweetsorghumacrossthecountry!sspatialscales.Datausedfortheanalysisincludethespatialdataofclmiate,soi,ltopography,andlanduse,and
6、literaturesrelevantforsweetsorghumstudies.Itisfoundfromthestudy,thatmostoftheprovincesinChinaaresuitableforsweetsorghumproduction.However,thesuitabilitylevelsforsweetsorghumproductionvaryamongtheregions.Takingunusedlandasanexample,atotalof59.19millionhaofunusedland
7、isavailableforsweetsorghumproduction,whichismainlylocatedinXinjiangUygurAutonomousRegionandInnerMongoliaAutonomousRegion.Themostsuitableareasfortheproductionisabout2.87millionha,thoseareasaremainlydistributedinInnerMongoliaAutonomousRegion,Heilongjiang,ShandongandJ
8、ilinprovinces,andcharacterizedwithappropriatenaturalconditionssuchasrainfal,lsoilfertilityandlandslopes.Thisstudyindicatesthattheethanolpotential
