關鍵詞:碳儲量;時空演變;PLUS-InVEST模型;土地利用變化;博斯騰湖流域中圖分類號:X171.1 文獻標志碼:A 文章編號:2095-6819(2025)05-1267-10 doi:10.13254/j.jare.2024.0736
Spatial and temporal evolution and prediction of carbon stock in Bosten Lake basin based onPLUS-InVEST model
LI Daqiang1,ZHANG Feiyun1\",LI Qian2,34,ZHOU Hongtao1,LIJianqiang1,ZHOU Xinying1
(1.SchoolofPublicAdministration(LawSchol),XijngAgriculturalUniversityUrumqi83oo52China;2.XinjiangIsiutef EcologyandGeographyhineseAcademyofSienes,Urumqi8301hina;3.XinjangKeyLaboratoryofWaterCycleandWater UtilizationinAridRegios,Urumqi8Ol1,China;4XinjangIstituteofFeldSientificObservationofTianshanSowAvalas, Xinyuan , China)
Abstract:Itisimportantoexploretheimpactoflandusechangeoncarbonstockinthewatershedsofaridzoneswithfragileolgical environments,hichisimportantforthantenancefologicalalanceadthevelpmentofosstemservics.issudalyd andsimulatedthespatialandtemporalchangesofcarbonstock in BostenLakebasinbycouplingPLUSandInVESTmodels,usingfour periodsoflandusedatain1990,2o0,2010and2020,andbysimulating thelandusechangesin2030undernaturaldevelopment scenario,sustainabledevelopmentsenarioandeconomicdevelopmentsenario.Theesultsshowedthatfrom990toO2,thecarbon stockinBostenLakebasin increasedlinearlyatarateof4.85 % ,withanincrease of1.79x1Ot.Theincreaseofcultivated land area was the mainreasonfortheriseofcarbonstockinBostenLakebasin.Froml990to2O20,theareaswithhighcarbonstockinBostenLakebasinwere mainlylocatedinthewest,thenorth,andthenorthwesternTienShan MountainRangeandaroundtheKaiduRiver.Higerelevation areasandcultivatedlandof879-1299mand grassareasof2600-3300min BostenLakeandsouth-centralpartofthebasin,and graduallexpanddtoigherelevatioareas;lowvalueareasofcarbostockwereconentratedinthebareareasof879-OmnYanqi basin,oasisplainsndeacockiverreainthentral,otheastendouthwestenartofteasinndgaduallysakabon stockintearaboe3sodareasg.I3,thtscearisofbotcksstillsodniceasingtrdiha rise of SD(sustainable development scenario) gt; BAU(natural development scenario) gt; ED(economic development scenario);the trend of carbonstockchangesintheaeaabove35OOmintestudyareamaintainedtecharacteristicsofthechangesinO2O.Teindiecffect of snow and ice on the increase of carbon stock should not be ignored.
KeyWords:carbonstock;spatialand temporal evolution; PLUS-InVESTmodel; land use change; Bosten Lake basin
20世紀中后期以后,人類活動范圍擴張,溫室氣體大量排放,IPCC(政府間氣候變化專門委員會)第六次評估報告已經證實全球氣候變暖的趨勢仍在繼續。我國作為全球 CO2 排放量大的國家之一,明確提出“雙碳”目標,并將其納入“十四五\"規劃。土地利用變化是碳排放的第二大來源。陸地生態系統碳儲量(CS)變化對調節區域氣候[5、緩解溫室效應和維系區域碳循環等發揮著重要作用。因此,通過探究區域碳儲量時空變化,對實現土地資源合理利用與管理、促進可持續健康發展和生態保護有重要作用。
近年來,國內外學者對于CS及多情景預測的研究成果極為豐富。從研究方法上看,MCE-CA-Markov[7-8]、FLUS-GeoSOS[9-10]、PLUS[11-13]等是目前應用較為廣泛的土地利用多情景預測模型。其中,PLUS模型在模擬精度上要高于傳統模型,符合復雜景觀格局的要求。InVEST模型是CS評估的重要方式[4]。從研究區域看,目前對CS的研究主要集中在環境穩定區域,如南京市[、長江流域等;部分學者也對環境脆弱的干旱區CS進行預測和評估,如呼和浩特市[12]、天山北坡[3等,并得出生態保護措施有利于提高區域CS的結論,但僅關注總體CS的變化,較少對區域內不同景觀、水資源供給條件下CS的變化進行分析。水資源是干旱區發展的重要限制因素,干旱區水資源的發源、消耗和消散區的山區,綠洲和荒漠地區CS存在較大差異。從數據源看,大多數學者選擇中科院6類土地利用類型[15-16],較少考慮冰雪對CS的影響?!?br>