白龙江高山林线木本植物组成与地被物和土壤持水特性.pdfVIP免费

第５１卷第２期２０２３年６月贵州林业科技GuizhouForestryScienceandTechnologyVol􀆰５１,No􀆰２Jun．,２０２３白龙江高山林线木本植物组成与地被物和土壤持水特性黄旭东１,２,杨永红１,２∗,曹秀文１,２,刘锦乾１,２,王飞１,２(１􀆰甘肃省白龙江林业科学研究所,甘肃兰州７３００７０;２􀆰甘肃白龙江森林生态系统国家定位观测研究站,甘肃舟曲７４６３００)摘要:高山林线是植被生态脆弱区,也是植被过度敏感区,对高山林线的研究一直是众多学者研究的焦点之一,因研究的地域、海拔、环境、气候、对象等的不同,导致不同高山林线区域物种组成,水源涵养功能等差距较大.本研究以甘肃省白龙江高山林线为研究对象,通过对该区域木本植物组成与地被物和土壤持水特性分析,结果显示:高山林线不同海拔区域物种组成不同,随着海拔的升高,物种组成呈增加的趋势;高山林线不同区域土壤和地被物持水特性不同.关键词:高山林线;木本植物;地被物;土壤;持水特性中图分类号:S７１４文献标识码:AWoodyplantscompositionandwater－holdingcharacteristicsofgroundcoverandsoilinthealpinetimberlineofBailongRiverHUANGXudong１,２,YANGYonghong１,２∗,CAOXiuwen１,２,LIUJinqian１,２,WANGFei１,２(１􀆰InstituteofforestryScience,BailongjiangForestryManagementBureauofGansuProvince,Lanzhou７３００７０,China;２􀆰GansuBailongjiangNationalForestEcosystemResearchStation,Zhouqu７４６３００,China)Abstract:Alpinetimberlineisoneofthemostecologicalfragileandoverlysensitiveareasinthevegetationcoverages􀆰However,mostpreviousresearchofalpinetimberlinecanvarygreatlyintheregion,altitude,environment,andclimate􀆰TakingtheBailongRiverinGansualpinetimberlineastheresearchobject,thisstudyaimstoexploretheregionalwoodyplantscompositionandwater－holdingcharacteristicsofgroundcoverandsoilmoisture􀆰Theresultsshowthatthespeciescompositionwasdifferentatthevariouselevationsofthealpinetimberline􀆰Specifically,thespeciescompositionwasenhancedsignificantlywiththeincreaseintheelevation􀆰Soilandgroundcoveralsosharedthedifferentwater－holdingcharacteristicsinthedifferentregionsofthealpinetimberline．Keywords:alpinetimberline;woodyplants;groundcover;soil;waterfeature高山林线(alpinetimberline)是山地垂直带高山植被的分...