摘要
Background:Monitoringthechangingpatternofvegetationacrossdiverselandscapesthroughremotesensingisinstrumentalinunderstandingtheinteractionsofhumanactivitiesandtheecologicalenvironment.LandusepatterninthestateofHimachalPradeshintheIndianWesternHimalayashasbeenundergoingrapidmodificationsduetochangingcroppingpatterns,risinganthropogenicpressureonforestsandgovernmentpolicies.WestudiedlandusechangeinSolanForestDivisionofHimachalPradeshtoassessspecieswiseareachangesintheforestsoftheregion.Methods:Thesupervisedclassification(Maximumlikelihood)ontwodatesofIRS(LISSIII)satellitedatawasperformedtoassesslandusechangeovertheperiod1998–2010.Results:Sevenlandusecategorieswereidentifiednamely,chirpine(Pinusroxburghii)forest,broadleavedforest,bamboo(Dendrocalamusstrictus)forest,banoak(Quercusleucotrichophora)forest,khair(Acaciacatechu)forest,culturableblankandcultivation.Theareaunderchirpine,cultivationandkhairforestsincreasedby191ha(4.55%),129ha(13.81%)and77ha(23.40%),whereastheareaunderbanoak,broadleaved,culturableblankandbamboodecreasedby181ha(16.58%),152ha(6.30%),71ha(2.72%)and7ha(0.47%),respectively.Conclusions:Thestudyrevealedadecreaseintheareaunderforestandculturableblankcategoriesandasimultaneousincreaseintheareaundercultivationprimarilyduetothelargescaleintroductionofhorticulturalcashcropsinthestate.Thecompositionofforestsalsoexhibitedsomemajorchanges,withanincreaseintheareaofcommerciallyimportantmonocultureplantationspeciessuchaspineandkhair,andadeclineintheareaofoak,broadleavedandbamboowhicharefacingahighanthropogenicpressureinmeetingthelivelihooddemandsofforestdependentcommunities.Intimedeforestation,forestdegradationandecologicalimbalancesduetothechangingforestspeciescompositionmayinflictirreversibledamagesuponunstableandfragilemountainzonessuchastheIndianH
出版日期
2015年04月14日（中国期刊网平台首次上网日期，不代表论文的发表时间）
