DB21T+4469-2026主要針葉樹種立木含碳量相容性模型及碳計量

ICS65.020.20CCSB61212026-07-07發布DB21/T4469—2026本文件按照GB/T1.1—2020《標準化工作導則第1部分：標準化文件的結構和起草規則》的規定起請注意本文件的某些內容可能涉及專利。本文件的發布機構不承擔識別專利的責任。本文件由遼寧省林業和草原局提出并歸口。本文件起草單位：沈陽農業大學、遼寧省林業科學研究院、北票市林業和草原局、岫巖滿族自治縣自然資源事物服務中心、本溪市林業和草原局、彰武縣林業和草原局、寬甸滿族自治縣林業和草原局、國有清原滿族自治縣大孤家林場、本溪滿族自治縣清河城實驗林場。本文件主要起草人：高慧淋、殷有、孫云霞、呂海燕、鄭雪敏、張晏愷、單曉宇、白國華、隋炎佐、史秀舉、張亮、叢劍鋒、劉冰、王小星、連永剛、趙慶喜、于翔、胡延辰、劉家騰、佟藝玟、倪銘岐、鄒怡茜、劉芷岐、馬雪諾、閆慧鵬、程海嘉、程淇、邰浩宇、馬恩普。本文件發布實施后，任何單位和個人如有問題和意見建議，均可以通過來電和來函等方式進行反饋，我們將及時答復并認真處理，根據實際情況依法進行評估及復審。歸口管理部門通訊地址：遼寧省林業和草原局（遼寧省沈陽市和平區太原北街2號），聯系電話文件起草單位通訊地址：沈陽農業大學(遼寧省沈陽市沈河區東陵路120號)，聯系電話DB21/T4469—20261主要針葉樹種立木含碳量相容性模型及碳計量本文件規定了遼寧省落葉松（Larixgmelinii）、紅松（Pinuskoraiensis）、樟子松（Pinussylvestris）等8種針葉樹種立木樹干、樹枝、樹葉、樹根含碳量相容性模型數據調查及處理方法、相容性模型研建方法、參數估計方法、不同針葉樹種相容性模型的參數估計值。本文件適用于主要針葉樹種樹干、樹枝、樹葉、樹根含碳量的估算。2規范性引用文件下列文件中的內容通過文中的規范性引用而構成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有的修改單）適用于本文件。GB/T26424森林資源規劃設計調查技術規程GB/T43648主要樹種立木生物量模型與碳計量參數LY/T2188.2森林資源數據采集技術規范第2部分：森林資源規劃設計調查LY/T2258立木生物量建模方法技術規程3術語和定義下列術語和定義適用于本文件。3.1含水率watercontent樹木各器官中所含水分的重量和干重之比。[來源：LY/T2259—2014，3.2，有修改]3.2生物量biomass某一時刻單位面積內實際存活的有機物質（干重）總量。[來源：GB/T26424—2010，3.17，有修改]3.3含碳量相容性模型compatibilitycarbonstockmodel以立木總含碳量為基礎，總含碳量與樹干各組成部分的含碳量之和相等的非線性相容性模型。3.4碳計量carbonparameterDB21/T4469—20262相容性模型參數的估計結果。4外業調查4.1標準地設置選取具有代表性的林分設置標準地，標準地的形狀可為矩形或圓形，面積≥0.06hm2。4.2解析木的選取依據標準地調查的結果，所有樹木按照胸徑由大到小的順序排序，按照等斷面積劃分為5個組，分別在第1組、第3組和第5組選取1株平均木作為樣木進行解析。4.3樹干鮮重測定及樣品選擇將選取的優勢木、平均木、劣勢木伐倒去掉樹枝后，從樹根至樹梢按照1m的長度將樹干進行分段，上端不足1m的部分為梢頭。稱量所有區分段鮮重（kg），計算得到全樹干的鮮重。將樹木伐倒去掉樹枝后，從樹干基部到樹梢按照1m的長度將樹干進行切割，不足1m的部分確定為梢頭。為計算樹干含水率，在樹干每個區分段上端及0m、1.3m處截取厚度約為2cm的圓盤，在每個圓盤上截取楔形木塊作為樣品，記錄鮮重（g）。4.4枝條鮮重測定及樣品選擇將樹干上所有活枝條取下，稱量每一個帶葉枝條的鮮重（g）。將樹冠上、中、下層三層的標準枝條進行枝葉分離，分別記錄樹枝和樹葉的鮮重。為計算樹干含水率，將樹冠每層的樹枝取100g左右作為樣品，記錄鮮重（g）。4.5樹葉鮮重測定及樣品選擇將樹冠等分為長度相等的上、中、下三層，每層選取1個大小中等、健康的枝條作為標準枝條。將標準枝條進行枝葉分離，分別記錄樹枝和樹葉的鮮重（g），將樹冠每層的樹葉取100g左右作為樣品，記錄鮮重（g）。4.6樹根鮮重測定及樣品選擇將樹根全部挖出，將樹根按照大于5cm、2cm～5cm和小于2cm三個等級分組，分別測定每個組樹根的鮮重，將三個組的重量累計得到樹根鮮重（kg）。將樹根分為大于5cm、2cm～5cm和小于2cm三個等級，為計算樹干含水率，每個等級的樹根分別選取200g左右作為樣品，對其進行保鮮處理后，帶回實驗室，記錄鮮重（g）。5內業測定5.1生物量計算用干燥箱將選取的各樹木器官的所有樣品在85℃的條件下烘干至恒重，記錄各樣品干重，由各器官樣品的干重和鮮重的比例計算含水率，進而計算單木各器官的生物量。5.2含碳率測定將烘干后的樹木器官的樣品進行研磨，將研磨后的樣品重新在85℃的恒溫條件下進行烘干處理。所有樣品均分別取50mg左右的樣品，進行樣品含碳率的測定。DB21/T4469—202635.3含碳量計算利用各樹木器官的生物量乘以各器官的含碳率，計算樹木各器官的含碳量。6相容性模型構建6.1變量的選取以樹木胸徑為單一變量構建樹木器官一元相容性含碳量預估模型，以胸徑、樹高為變量構建二元相容性含碳量預估模型。6.2相容性模型構建一元相容性模型：式中：t——針葉樹全樹含碳量(kg);s——針葉樹樹干含碳量(kg);b——針葉樹樹枝含碳量(kg);l——針葉樹樹葉含碳量(kg);r——針葉樹樹根含碳量(kg);D——樹木胸徑(cm);二元相容性模型：式中：t——針葉樹全樹含碳量(kg);s——針葉樹樹干含碳量(kg);b——針葉樹樹枝含碳量(kg);l——針葉樹樹葉含碳量(kg);DB21/T4469—20264r——針葉樹樹根含碳量(kg);D——樹木胸徑(cm);H——樹高(m);b6.3參數估計所有針葉樹種的一元、二元立木含碳量相容性模型的參數均采用R語言聯立方程組的方法進行擬合。6.4模型的評價指標以調整后的決定系數（R以調整后的決定系數（Rdj）作為模型擬合優度的指標，公式如下：式中：n——樣本個數；p——參數個數。7碳計量方程基于6.3部分估計得出的相容性模型的參數結果，編制遼寧省主要針葉樹種一元立木含碳量相容性模型計量參數用表，按照附錄A執行；編制遼寧省主要針葉樹種二元立木含碳量相容性模型計量參數用表，按照附錄B執行。DB21/T4469—20265（規范性）主要針葉樹一元立木含碳量相容性模型計量參數遼寧省主要針葉樹種一元立木含碳量相容性模型計量參數按照表A.1執行。表A.1主要針葉樹一元立木含碳量相容性模型計量參數表kkk0.0245D2.7255Cs=1+2.6580D-1.0755+3.0004D-1.5083+0.1766D0.16550.0245×2.6580D(-1.0755+2.7255)Cb=1+2.6580D-1.0755+3.0004D-1.5083+0.1766D0.16550.0245×3.0004D(-1.5083+2.7255)Cl=1+2.6580D-1.0755+3.0004D-1.5083+0.1766D0.16550.0245×0.1766D(0.1655+2.7255)1+2.6580D-1.0755+3.0004D-1.5083+0.1766D0.16551+2.6580D-1.0755+3.0004D-1.5083+0.1766D0.16550.0384D2.5196Cs=1+0.0315D0.5499+0.1146D-0.0785+0.0540D0.58070.0384×0.0315D(0.5499+2.5196)Cb=1+0.0315D0.5499+0.1146D-0.0785+0.0540D0.58070.0384×0.1146D(-0.0785+2.5196)Cl=1+0.0315D0.5499+0.1146D-0.0785+0.0540D0.58070.0384×0.0540D(0.5807+2.5196)r1+0.0315D0.5499+0.1035D2.1529Cs=1+0.9827D-0.4280+2.7908D-1.1112+0.9955D-0.79360.1035×0.9827D(-0.4280+2.1529)Cb=1+0.9827D-0.4280+2.7908D-1.1112+0.9955D-0.79360.1035×2.7908D(-1.1112+2.1529)Cl=1+0.9827D-0.4280+2.7908D-1.1112+0.9955D-0.79360.1035×0.9955D(-0.7936+2.1529)Cr=1+0.9827D-0.4280Cr=0.3062D1.8452Cs=1+11.2183D-1.0215+0.7925D-0.9827+2.4683D-0.50690.3062×11.2183D(-1.0215+1.8452)Cb=1+11.2183D-1.0215+0.7925D-0.9827+2.4683D-0.50690.3062×0.7925D(-0.9827+1.8452)Cl=1+11.2183D-1.0215+0.7925D-0.9827+2.4683D-0.50690.3062×2.4683D(-0.5069+1.8452)Cr=1+11.2183D-1.0215Cr=DB21/T4469—20266表A.1主要針葉樹一元立木含碳量相容性模型計量參數表（續）bkkCs=Cb=Cl=Cr=0.5809D1.40911+2.7069D-0.8084+1.0892D-0.8144+1.5426D-0.31520.5809×2.7069D(-0.8084+1.4091)1+2.7069D-0.8084+1.0892D-0.8144+1.5426D-0.31520.5809×1.0892D(-0.8144+1.4091)1+2.7069D-0.8084+1.0892D-0.8144+1.5426D-0.31520.5809×1.5426D(-0.3152+1.4091)1+2.7069D-0.8084+1.0892D-0.8144+1.5426D-0.3152Cs=Cb=Cl=Cr=0.0865D2.16071+1.7199D-0.6478+0.3249D-0.3377+2.5066D-0.73310.0865×1.7199D(-0.6478+2.1607)1+1.7199D-0.6478+0.3249D-0.3377+2.5066D-0.73310.0865×0.3249D(-0.3377+2.1607)1+1.7199D-0.6478+0.3249D-0.3377+2.5066D-0.73310.0865×2.5066D(-0.7331+2.1607)1+1.7199D-0.6478+0.3249D-0.3377+2.5066D-0.7331Abiesfabri0.6209D1.6535Cs=1+10.5846D-1.1325+12.0344D-1.2039+3.7853D-1.02270.6209×10.5846D(-1.1325+1.6535)Cb=1+10.5846D-1.1325+12.0344D-1.2039+3.7853D-1.02270.6209×12.0344D(-1.2039+1.6535)Cl=1+10.5846D-1.1325+12.0344D-1.2039+3.7853D-1.02270.6209×3.7853D(-1.0227+1.6535)1+10.5846D-1.1325+12.0344D-1.2039+3.7853D-1.02271+10.5846D-1.1325+12.0344D-1.2039+3.7853D-1.02270.1205D2.0262Cs=1+0.1680D0.2188+0.5852D-0.5224+0.4553D-0.39390.1205×0.1680D(0.2188+2.0262)Cb=1+0.1680D0.2188+0.5852D-0.5224+0.4553D-0.39390.1205×0.5852D(-0.5224+2.0262)Cl=1+0.1680D0.2188+0.5852D-0.5224+0.4553D-0.39390.1205×0.4553D(-0.3939+2.0262)Cr=1+0.1680D0.2188+0.5852D-0.5224+0.4553D-0.3939DB21/T4469—20267（規范性）主要針葉樹二元立木含碳量相容性模型計量參數遼寧省主要針葉樹種二元立木含碳量相容性模型計量參數參照表B.1執行。表B.1主要針葉樹二元立木含碳量相容性模型計量參數表bkkk0.0161×D2×0.9665H0.9665Cs=1+6.7484D-2×0.4651H-0.4651+5.9725D-2×0.5845H-0.5845+0.2144D-2×0.0352H-0.03520.0161×6.7484D(-2×0.4651+2×0.9665)H(-0.4651+0.9665)Cb=1+6.7484D-2×0.4651H-0.4651+5.9725D-2×0.5845H-0.5845+0.2144D-2×0.0352H-0.03520.0161×5.9725D(-2×0.5845+2×0.9665)H(-0.5845+0.9665)Cl=1+6.7484D-2×0.4651H-0.4651+5.9725D-2×0.5845H-0.5845+0.2144D-2×0.0352H-0.03520.0161×0.2144D(-2×0.0352+2×0.9665)H(-0.0352+0.9665)Cr=1+6.7484D-2×0.4651H-0.4651+5.9725D-2×0.5845H-0.5845Cr=0.0096×D2×1.0285H1.0285Cs=1+0.0191D-2×0.1365H0.2462+0.1151D-2×0.4468H-0.0278+0.0384D-2×0.2095H0.24000.0096×0.0191D(-2×0.1365+2×1.0285)H(0.2462+1.0285)Cb=1+0.0191D-2×0.1365H0.2462+0.1151D-2×0.4468H-0.0278+0.0384D-2×0.2095H0.24000.0096×0.1151D(-2×0.4468+2×1.0285)H(-0.0278+1.0285)Cl=1+0.0191D-2×0.1365H0.2462+0.1151D-2×0.4468H-0.0278+0.0384D-2×0.2095H0.24000.0096×0.0384D(-2×0.2095+2×1.0285)H(0.2400+1.0285)r1+0.0191D-2×0.1365H0.2462+0.1151D-2×0.4468H-0.0278+0.0783×D2×0.8138H0.8138Cs=1+1.0100D-2×0.1573H-0.1573+3.7782D-2×0.4415H-0.4415+1.2225D-2×0.3139H-0.31390.0783×1.0100D(-2×0.1573+2×0.8138)H(-0.1573+0.8138)Cb=1+1.0100D-2×0.1573H-0.1573+3.7782D-2×0.4415H-0.4415+1.2225D-2×0.3139H-0.31390.0783×3.7782D(-2×0.4415+2×0.8138)H(-0.4415+0.8138)Cl=1+1.0100D-2×0.1573H-0.1573+3.7782D-2×0.4415H-0.4415+1.2225D-2×0.3139H-0.31390.0783×1.2225D(-2×0.3139+2×0.8138)H(-0.3139+0.8138)r1+1.0100D-2×0.1573H-0.1573+3.7782D-2×0.4415H-0.4415+1.20.1843×D2×0.7120H0.7120Cs=1+31.0080D-2×0.4831H-0.4831+1.8873D-2×0.4503H-0.4503+3.7083D-2×0.2272H-0.22720.1843×31.0080D(-2×0.4831+2×0.7120)H(-0.4831+0.7120)Cb=1+31.0080D-2×0.4831H-0.4831+1.8873D-2×0.4503H-0.4503+3.7083D-2×0.2272H-0.22720.1843×1.8873D(-2×0.4503+2×0.7120)H(-0.4503+0.7120)Cl=1+31.0080D-2×0.4831H-0.4831+1.8873D-2×0.4503H-0.4503+3.7083D-2×0.2272H-0.22720.1843×3.7083D(-2×0.2272+2×0.7120)H(-0.2272+0.7120)r1+31.0080D-2×0.4831H-0.4831+1.8873D-2×0.4503H-0.4503+表B.1主要針葉樹二元立木含碳量相容性模型計量參數表（續）bkkkDB21/T4469—202680.4129×D2×0.5830H0.5830Cs=1+3.6153D-2×0.3511H-0.3511+1.4116D-2×0.3479H-0.3479+1.9590D-2×0.1591H-0.15910.4129×3.6153D(-2×0.3511+2×0.5830)H(-0.3511+0.5830)Cb=1+3.6153D-2×0.3511H-0.3511+1.4116D-2×0.3479H-0.3479+1.9590D-2×0.1591H-0.15910.4129×1.4116D(-2×0.3479+2×0.5830)H(-0.3479+0.5830)Cl=1+3.6153D-2×0.3511H-0.3511+1.4116D-2×0.3479H-0.3479+1.9590D-2×0.1591H-0.15910.4129×1.9590D(-2×0.1591+2×0.5830)H(-0.1591+0.5830)Cr=1+3.6153D-2×0.3511H-0.3511+1.4116D-2×0.3479H-0.3479+1.9590D-2×0.1591H-0.15910.1057×D2×0.7702H0.7702Cs=1+1.9121D-2×0.2518H-0.2518+0.3844D-2×0.1455H-0.1455+3.7514D-2×0.3244H-0.32440.1057×1.9121D(-2×0.2518+2×0.7702)H(-0.2518+0.7702)Cb=1+1.9121D-2×0.2518H-0.2518+0.3844D-2×0.1455H-0.1455+3.7514D-2×0.3244H-0.32440.1057×0.3844D(-2×0.1455+2×0.7702)H(-0.1455+0.7702)Cl=1+1.9121D-2×0.2518H-0.2518+0.3844D-2×0.1455H-0.1455+3.7514D-2×0.3244H-0.32440.1057×3.7514D(-2×0.3244+2×0.7702)H(-0.3244+0.7702)Cr=1+1.9121D-2×0.2518H-0.2518+0.3844D-2×0.1455H-0.1455Cr=Abiesfabri0.3337×D2×0.6469H0.6469Cs=1+34.4468D-2×0.5265H-0.5265+33.9541D-2×0.5341H-0.5341+18.2061D-2×0.5364H-0.53640.3337×34.4468D(-2×0.5265+2×0.6469)H(-0.5265+0.6469)Cb=1+34.4468D-2×0.5265H-0.5265+33.9541D-2×0.5341H-0.5341+18.2061D-2×0.5364H-0.53640.3337×33.9541D(-2×0.5341+2×0.6469)H(-0.5341+0.6469)Cl=1+34