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1、应用生态学报2004年9月第15卷第9期CHINESEJOURNALOFAPPLIEDECOLOGY,Sep.2004,15(9)B1507~1511辽宁西部低山丘陵区植被恢复研究:基于演替*理论和生态系统退化程度1,2**23杜晓军姜凤岐焦志华12(中国科学院植物研究所植被数量生态学重点实验室,北京100093;中国科学院沈阳应用生态研究所,沈阳110016;3中国矿业大学北京校区,北京100083)=摘要>在对辽宁西部地区植被演替分析的基础上,选用不同演替阶段的生境指标,应用聚类分析方法,定量确定了辽宁西部低山丘陵区退化生态系统的退化程度.在辽宁西部地区,
2、南刘杖子林场的天然栎林、天然油松林、杨栎林、牛河梁和欺天林场坡地的人工油松林与天然松栎林的平均相异系数分别为01655、01665、21029、31919,综合反映了其在生态系统演替/退化中的相对位置.研究表明,辽宁西部低山丘陵区现有油松林(阴坡)立地大多已退化到灌木林和先锋乔木林之间的演替阶段,并且接近于先锋乔木林阶段;建议在现有人工林经营改造或营造混交林时,应适当增大灌木树种和先锋乔木树种的比重.关键词退化生态系统退化程度演替理论植被恢复油松辽宁西部文章编号1001-9332(2004)09-1507-05中图分类号S718文献标识码AVegetation
3、restorationinwesternLiaoninghillyregion:Astudybasedonsuccessiontheoryanddegradationde-1,2231greeofecosystem.DUXiaojun,JIANGFengqi,JIAOZhihua(LaboratoryofQuantitativeVegetationEcol-2ogy,InstituteofBotany,ChineseAcademyofSciences,Beijing100093,China;InstituteofAppliedEcology,3ChineseA
4、cademyofSciences,Shenyang110016,China;ChinaUniversityofMiningandTechnology,Beijing100083,China).-Chin.J.Appl.Ecol.,2004,15(9):1507~1511.BasedontheanalysisofvegetationsuccessioninwesternLiaoninghillyregion,andbythemethodofClusterAnalysiswithsomehabitatindexesofdifferentsuccessionstag
5、e,thispaperquantitativelymeasuredthedegrada-tiondegreeofdegradedecosystemsinthisregion.Theresultsshowedthattheaveragedissimilaritiesbetweennat-uralQuercusforest,naturalChinesepine(Pinustabulaeformis)forestandPopulus-QuercusforestinNanl-iuzhangziforestrycentreandChinesepineplantation
6、sinNiuheliangregionandQitianforestrycentrewere01655,01665,21029and31919,respectively,andasawhole,thedissimilaritiesrepresentedtheplacesoftheforestsintheprocessofecosystemsuccession/degradation.Itwasalsoshowedthatmosthabitatsweredegradedtothestagebetweenshrubberyandpioneerarborforest
7、,andclosertothesuccessionstageofpioneerarborforest.Somesuggestionsweremadeforthemanagementoftheexistingplantationandtheconstructionofmixedforest,e.g.,toincreasetheproportionofshrubberyandpioneerarborspecies,especiallythatofnitrogenfixationtreespecies.Theplantspecieslistofseveralmain
8、vegetationtypesinwe
