幼龄红树生物量模型及幼林红树林碳储量研究*
*感谢惠州市林业局、惠东县林业局、惠东县自然资源局和惠东县好招楼湿地公园管理处对本研究的支持
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胡鑫(1993—), 男, 江西省吉安市人, 博士, 从事海洋生态学研究。email: huxinest@163.com |
Copy editor: 孙翠慈
收稿日期: 2024-07-18
修回日期: 2024-08-02
网络出版日期: 2024-09-03
基金资助
广东省自然资源厅科技项目(GDZRZYKJ2023002)
Study on biomass models of juvenile mangroves and carbon storage in young mangrove ecosystems*
Received date: 2024-07-18
Revised date: 2024-08-02
Online published: 2024-09-03
Supported by
Science and Technology Projects of Guangdong Provincial Department of Natural Resources(GDZRZYKJ2023002)
随着全球气候变化日益加剧, 红树林作为重要的滨海蓝碳生态系统备受关注。本研究旨在构建幼龄红树生物量模型, 评估广东考洲洋红树林碳储量, 为快速准确评估人工营造幼林红树林碳储量提供经验方法和科学依据。以考洲洋幼龄白骨壤(Avicennia marina)、红海榄(Rhizophora stylosa)、秋茄(Kandelia obovata)、木榄(Bruguiera gymnorhiza)和桐花树(Aegiceras corniculatum)为研究对象, 使用基径(basal diameter, D)和株高(height, H)及其派生的复合变量构建红树植物生物量与测树因子之间最佳拟合模型, 并进一步评估考洲洋幼林红树林生态系统碳储量。研究发现, 复合变量生物量模型优于单一变量生物量模型(桐花树地下生物量模型除外)。白骨壤、红海榄、木榄和桐花树最优生物量模型均为幂函数模型, 秋茄最优生物量模型为线性模型。考洲洋人工营造幼林红树林碳密度为(91.26±17.32)Mg C·hm-2, 碳储量约为35964.65Mg C, 土壤碳库占考洲洋幼林红树林碳库78.3%~98.5%。红树植物碳密度从大到小依次为桐花+秋茄群落、红海榄+白骨壤群落、白骨壤群落、木榄群落。本研究结果对广东乃至全国人工营造红树林碳储量评估和生态修复具有重要参考价值。
胡鑫 , 熊兰兰 , 陈顺洋 , 张黄琛 , 邹易阳 , 张吉超 , 刘东熙 , 何佳潞 , 吴于琪 , 朱振杰 . 幼龄红树生物量模型及幼林红树林碳储量研究*[J]. 热带海洋学报, 2025 , 44(4) : 187 -199 . DOI: 10.11978/2024141
As global climate change intensifies, mangroves—a vital coastal blue carbon ecosystem—have garnered increasing attention. This study aimed to develop biomass models for juvenile mangroves and assess the carbon storage of young mangrove ecosystems in Kaozhouyang Bay. The results provide empirical methods and a scientific basis for the rapid and accurate assessment of carbon stocks in artificially planted young mangroves. The study focuses on five artificially planted juvenile mangrove species in Kaozhouyang Bay: Avicennia marina, Rhizophora stylosa, Kandelia obovata, Bruguiera gymnorhiza, and Aegiceras corniculatum. Various factors derived from basal diameter (D) and tree height (H) were used to construct optimal allometric equations between biomass and dendrometric parameters. Furthermore, the best-performing biomass models were applied to estimate vegetation carbon storage and ecosystem carbon storage in the artificially planted mangroves of Kaozhouyang Bay. The findings indicated that multivariable models generally outperformed univariable models, except for the below-ground biomass model of Aegiceras corniculatum. The optimal biomass models for Avicennia marina, Rhizophora stylosa, Bruguiera gymnorhiza, and Aegiceras corniculatum were power function models, whereas linear models best fit Kandelia obovata. The carbon density of the artificially planted young mangrove ecosystems in Kaozhouyang Bay was (91.26±17.32) Mg C·hm-2, with a total carbon stock of approximately 35964.65 Mg C. Soil carbon constituted 78.3% to 98.5% of the total carbon stock in these ecosystems. Among the different mangrove communities, vegetation carbon density ranked as follows (from highest to lowest): Aegiceras corniculatum + Kandelia obovata communities, Rhizophora stylosa + Avicennia marina communities, Avicennia marina community, and Bruguiera gymnorhiza community. These results offer valuable insights for assessing carbon storage and guiding ecological restoration efforts in artificially planted mangroves in Guangdong Province and nationwide.
表1 红树植物样本基本因子统计量Tab. 1 Basic parameter statistics of mangrove plant samples |
| 树种 | 基径/cm | 株高/m | 树龄/a | 地上生物量/kg | 地下生物量/kg | 地上碳密度系数/% | 地下碳密度系数/% |
|---|---|---|---|---|---|---|---|
| 红海榄 | 1.05~4.14 | 0.46~1.73 | 1~5 | 0.012~1.416 | 0.002~1.069 | 43.79~44.66 | 31.66~40.61 |
| 白骨壤 | 0.70~3.60 | 0.36~1.63 | 1~5 | 0.004~1.531 | 0.001~0.570 | 41.87~44.55 | 35.47~38.79 |
| 桐花树 | 0.60~3.30 | 0.32~0.91 | 1~3 | 0.002~0.326 | 0.001~0.104 | 36.67~40.39 | 35.96~42.20 |
| 木榄 | 0.96~3.76 | 0.32~1.03 | 1~3 | 0.006~0.437 | 0.001~0.131 | 43.06~43.93 | 31.28~37.26 |
| 秋茄 | 0.65~14.32 | 0.36~2.15 | 1~5 | 0.006~3.822 | 0.003~2.215 | 39.28~46.54 | 32.45~40.60 |
表2 幼龄红树植物生物量模型构建Tab. 2 Biomass model development for juvenile mangrove plants |
| 树种 | 自变量 | 因变量 | R2 | P | 回归模型 | RSS | AIC | RMSE |
|---|---|---|---|---|---|---|---|---|
| 红海榄地上 生物量模型 | D | Wt | 0.88 | <0.01 | Wt = 0.0094×D3.0878 | 0.62 | -114.33 | 0.14 |
| Wt | 0.53 | <0.01 | Wt = 0.2358×D-0.3383 | 0.88 | -103.79 | 0.17 | ||
| H | Wt | 0.61 | <0.01 | Wt = 0.1037×H3.072 | 0.84 | -105.40 | 0.17 | |
| Wt | 0.54 | <0.01 | Wt = 0.6918×H-0.493 | 0.86 | -104.52 | 0.17 | ||
| DH | Wt | 0.88 | <0.01 | Wt = 0.0269×(DH)1.8155 | 0.28 | -135.97 | 0.10 | |
| Wt | 0.77 | <0.01 | Wt = 0.1608×(DH)-0.1843 | 0.44 | -122.53 | 0.12 | ||
| D2H | Wt | 0.90 | <0.01 | Wt = 0.0175×(D2H)1.1779 | 0.23 | -136.10 | 0.11 | |
| Wt | 0.83 | <0.01 | Wt = 0.0388×(D2H)-0.0554 | 0.33 | -131.72 | 0.10 | ||
| DH2 | Wt | 0.82 | <0.01 | Wt = 0.0434×(DH2)1.197 | 0.34 | -130.33 | 0.11 | |
| Wt | 0.89 | <0.01 | Wt = 0.1037×(DH2)-0.0841 | 0.29 | -136.58 | 0.11 | ||
| 红海榄地下 生物量模型 | D | Wd | 0.88 | <0.01 | Wd = 0.0022×D3.4548 | 0.61 | -115.09 | 0.14 |
| Wd | 0.41 | <0.01 | Wd = 0.1651×D-0.2747 | 0.63 | -113.83 | 0.15 | ||
| H | Wd | 0.56 | <0.01 | Wd = 0.0356×H2.4809 | 0.88 | -103.94 | 0.17 | |
| Wd | 0.34 | <0.01 | Wd = 0.3549×H-0.2487 | 0.70 | -110.59 | 0.15 | ||
| DH | Wd | 0.84 | <0.01 | Wd = 0.0097×(DH)1.752 | 0.59 | -113.90 | 0.14 | |
| Wd | 0.62 | <0.01 | Wd = 0.108×(DH)-0.1492 | 0.71 | -124.90 | 0.12 | ||
| D2H | Wd | 0.90 | <0.01 | Wd = 0.0056×(D2H)1.2153 | 0.53 | -146.91 | 0.13 | |
| Wd | 0.76 | <0.01 | Wd = 0.0289×(D2H)-0.0791 | 0.75 | -139.11 | 0.09 | ||
| DH2 | Wd | 0.76 | <0.01 | Wd = 0.0164×(DH2)0.7605 | 0.93 | -100.30 | 0.18 | |
| Wd | 0.78 | <0.01 | Wd = 0.0718×(D2H)-0.0876 | 0.74 | -141.31 | 0.09 | ||
| 白骨壤地上 生物量模型 | D | Wt | 0.92 | <0.01 | Wt = 0.0182×D3.7886 | 2.35 | -74.44 | 0.28 |
| Wt | 0.68 | <0.01 | Wt = 0.4464×D-0.4502 | 1.56 | -86.62 | 0.23 | ||
| H | Wt | 0.74 | <0.01 | Wt = 0.2047×H3.722 | 0.87 | -104.18 | 0.17 | |
| Wt | 0.73 | <0.01 | Wt = 0.9049×H-0.4899 | 1.30 | -92.09 | 0.21 | ||
| DH | Wt | 0.93 | <0.01 | Wt = 0.0595×(DH)2.1007 | 1.12 | -94.54 | 0.19 | |
| Wt | 0.88 | <0.01 | Wt = 0.28×(DH)-0.1703 | 0.59 | -113.80 | 0.14 | ||
| D2H | Wt | 0.95 | <0.01 | Wt = 0.0383×(D2H)1.3822 | 0.71 | -131.98 | 0.14 | |
| Wt | 0.84 | <0.01 | Wt = 0.0844×(D2H)-0.0159 | 0.75 | -106.71 | 0.16 | ||
| DH2 | Wt | 0.89 | <0.01 | Wt = 0.0931×(DH2)1.3826 | 0.63 | -112.00 | 0.14 | |
| Wt | 0.91 | <0.01 | Wt = 0.1705×(DH2)-0.0315 | 0.43 | -123.03 | 0.12 | ||
| 白骨壤地下 生物量模型 | D | Wd | 0.93 | <0.01 | Wd = 0.01×D3.145 | 0.20 | -148.92 | 0.08 |
| Wd | 0.61 | <0.01 | Wd = 0.1179×D-0.0983 | 0.17 | -152.36 | 0.08 | ||
| H | Wd | 0.80 | <0.01 | Wd = 0.1062×H3.4719 | 0.18 | -176.96 | 0.05 | |
| Wd | 0.75 | <0.01 | Wd = 0.2913×H-0.1313 | 0.11 | -165.76 | 0.06 | ||
| DH | Wd | 0.93 | <0.01 | Wd = 0.031×(DH)1.7634 | 0.14 | -156.55 | 0.07 | |
| Wd | 0.79 | <0.01 | Wd = 0.0803×(DH)-0.0281 | 0.10 | -168.47 | 0.06 | ||
| D2H | Wd | 0.94 | <0.01 | Wd = 0.0206×(D2H)1.144 | 0.12 | -163.05 | 0.09 | |
| Wd | 0.74 | <0.01 | Wd =0.0239×(D2H)+0.0099 | 0.12 | -162.04 | 0.06 | ||
| DH2 | Wd | 0.90 | <0.01 | Wd = 0.0473×(DH2)1.1905 | 0.17 | -150.86 | 0.08 | |
| Wd | 0.83 | <0.01 | Wd =0.0526×(D2H)+0.0067 | 0.08 | -175.10 | 0.05 | ||
| 桐花树地上 生物量模型 | D | Wt | 0.90 | <0.01 | Wt = 0.011×D2.3301 | 0.03 | -208.12 | 0.03 |
| Wt | 0.57 | <0.01 | Wt = 0.0704×D-0.0731 | 0.04 | -196.34 | 0.04 | ||
| H | Wt | 0.33 | <0.01 | Wt = 0.1184×H2.1268 | 0.07 | -179.13 | 0.05 | |
| Wt | 0.24 | <0.01 | Wt = 0.1877×H-0.0587 | 0.13 | -161.70 | 0.07 | ||
| 桐花树地上 生物量模型 | DH | Wt | 0.84 | <0.01 | Wt = 0.0378×(DH)1.5403 | 0.02 | -210.19 | 0.03 |
| Wt | 0.67 | <0.01 | Wt = 0.0825×(DH)-0.0402 | 0.03 | -202.75 | 0.03 | ||
| D2H | Wt | 0.90 | <0.01 | Wt = 0.0227×(D2H)0.9647 | 0.02 | -214.66 | 0.03 | |
| Wt | 0.84 | <0.01 | Wt = 0.0275×(D2H)-0.0109 | 0.02 | -203.74 | 0.02 | ||
| DH2 | Wt | 0.71 | <0.01 | Wt = 0.065×(DH2)1.0197 | 0.03 | -199.39 | 0.03 | |
| Wt | 0.68 | <0.01 | Wt = 0.0881×(DH2)-0.0127 | 0.03 | -203.57 | 0.03 | ||
| 桐花树地下 生物量模型 | D | Wd | 0.90 | <0.01 | Wd = 0.0038×D2.4588 | 0.00 | -299.13 | 0.01 |
| Wd | 0.65 | <0.01 | Wd = 0.0241×D-0.0234 | 0.00 | -269.91 | 0.01 | ||
| H | Wd | 0.36 | <0.01 | Wd = 0.0462×H2.2983 | 0.00 | -250.07 | 0.01 | |
| Wd | 0.31 | <0.01 | Wd = 0.0662×H-0.0201 | 0.00 | -249.42 | 0.02 | ||
| DH | Wd | 0.84 | <0.01 | Wd = 0.0143×(DH)1.5553 | 0.00 | -288.83 | 0.01 | |
| Wd | 0.74 | <0.01 | Wd = 0.0272×(DH)-0.0104 | 0.00 | -276.19 | 0.01 | ||
| D2H | Wd | 0.88 | <0.01 | Wd = 0.0084×(D2H)0.9858 | 0.00 | -296.93 | 0.01 | |
| Wd | 0.88 | <0.01 | Wd = 0.009×(D2H)-0.0008 | 0.00 | -299.49 | 0.01 | ||
| DH2 | Wd | 0.70 | <0.01 | Wd = 0.0247×(DH2)1.0295 | 0.00 | -275.08 | 0.01 | |
| Wd | 0.74 | <0.01 | Wd = 0.0293×(D2H)-0.0017 | 0.00 | -276.52 | 0.01 | ||
| 木榄地上 生物量模型 | D | Wt | 0.73 | <0.01 | Wt = 0.0043×D3.6814 | 0.05 | -191.85 | 0.04 |
| Wt | 0.87 | <0.01 | Wt = 0.1475×D-0.1976 | 0.04 | -199.76 | 0.03 | ||
| H | Wt | 0.86 | <0.01 | Wt = 0.2561×H3.4544 | 0.12 | -164.76 | 0.06 | |
| Wt | 0.58 | <0.01 | Wt = 0.3593×H-0.1392 | 0.12 | -163.59 | 0.06 | ||
| DH | Wt | 0.95 | <0.01 | Wt = 0.0353×(DH)2.1235 | 0.04 | -199.35 | 0.04 | |
| Wt | 0.88 | <0.01 | Wt = 0.1151×(DH)-0.0631 | 0.04 | -198.12 | 0.03 | ||
| D2H | Wt | 0.91 | <0.01 | Wt = 0.0158×(D2H)1.413 | 0.06 | -184.64 | 0.04 | |
| Wt | 0.93 | <0.01 | Wt = 0.0333×(D2H)-0.0128 | 0.06 | -200.10 | 0.03 | ||
| DH2 | Wt | 0.95 | <0.01 | Wt = 0.0767×(DH2)1.3609 | 0.06 | -184.47 | 0.04 | |
| Wt | 0.83 | <0.01 | Wt = 0.1054×(DH2)-0.0152 | 0.05 | -188.28 | 0.04 | ||
| 木榄地下 生物量模型 | D | Wd | 0.57 | <0.01 | Wd = 0.0013×D3.8032 | 0.01 | -228.58 | 0.02 |
| Wd | 0.78 | <0.01 | Wd = 0.0452×D-0.0568 | 0.01 | -249.71 | 0.02 | ||
| H | Wd | 0.92 | <0.01 | Wd = 0.1168×H4.2022 | 0.01 | -226.94 | 0.02 | |
| Wd | 0.67 | <0.01 | Wd = 0.1263×H-0.049 | 0.01 | -238.25 | 0.02 | ||
| DH | Wd | 0.88 | <0.01 | Wd = 0.0106×(DH)2.4009 | 0.02 | -216.43 | 0.03 | |
| Wd | 0.84 | <0.01 | Wd = 0.0369×(DH)-0.0177 | 0.00 | -258.62 | 0.01 | ||
| D2H | Wd | 0.80 | <0.01 | Wd = 0.0044×(D2H)1.5536 | 0.02 | -213.67 | 0.03 | |
| Wd | 0.83 | <0.01 | Wd = 0.0102×(D2H)-0.0004 | 0.01 | -255.70 | 0.01 | ||
| DH2 | Wd | 0.93 | <0.01 | Wd = 0.026×(DH2)1.5795 | 0.02 | -251.75 | 0.02 | |
| Wd | 0.80 | <0.01 | Wd =0.0338×(D2H)-0.0025 | 0.01 | -251.02 | 0.01 | ||
| 秋茄地上 生物量模型 | D | Wt | 0.91 | <0.01 | Wt = 0.0243×D2.0144 | 4.83 | -52.82 | 0.40 |
| Wt | 0.82 | <0.01 | Wt = 0.274×D-0.4659 | 3.23 | -64.85 | 0.33 | ||
| H | Wt | 0.87 | <0.01 | Wt = 0.2833×H3.4024 | 6.38 | -44.44 | 0.46 | |
| Wt | 0.66 | <0.01 | Wt = 1.7532×H-1.1884 | 6.51 | -43.82 | 0.47 | ||
| DH | Wt | 0.95 | <0.01 | Wt = 0.0569×(DH)1.3385 | 1.21 | -92.22 | 0.20 | |
| Wt | 0.96 | <0.01 | Wt = 0.1588×(DH)-0.1618 | 0.83 | -103.62 | 0.17 | ||
| D2H | Wt | 0.94 | <0.01 | Wt = 0.04×(D2H)0.8104 | 2.54 | -70.04 | 0.29 | |
| Wt | 0.84 | <0.01 | Wt = 0.011×(D2H)+0.1818 | 3.03 | -64.78 | 0.32 | ||
| DH2 | Wt | 0.95 | <0.01 | Wt = 0.0882×(DH2)0.9796 | 0.58 | -114.47 | 0.14 | |
| Wt | 0.97 | <0.01 | Wt = 0.085×(DH2) + 0.0237 | 0.54 | -116.38 | 0.13 | ||
| 秋茄地下 生物量模型 | D | Wd | 0.95 | <0.01 | Wd = 0.0073×D2.3728 | 4.02 | -58.33 | 0.37 |
| Wd | 0.87 | <0.01 | Wd = 0.1571×D-0.2736 | 0.80 | -106.59 | 0.16 | ||
| H | Wd | 0.85 | <0.01 | Wd = 0.1209×H3.8117 | 2.58 | -71.63 | 0.29 | |
| Wd | 0.60 | <0.01 | Wd = 0.9006×H-0.5968 | 2.38 | -74.00 | 0.28 | ||
| DH | Wd | 0.96 | <0.01 | Wd = 0.0202×(DH)1.5373 | 0.71 | -108.20 | 0.15 | |
| Wd | 0.97 | <0.01 | Wd = 0.0887×(DH)-0.1029 | 0.20 | -146.39 | 0.08 | ||
| D2H | Wd | 0.96 | <0.01 | Wd = 0.0134×(D2H)0.9392 | 1.80 | -80.48 | 0.24 | |
| Wd | 0.89 | <0.01 | Wd = 0.0063×(D2H)-0.0678 | 1.20 | -92.60 | 0.20 | ||
| DH2 | Wd | 0.94 | <0.01 | Wd = 0.0334×(DH2)1.1147 | 0.20 | -146.77 | 0.08 | |
| Wd | 0.98 | <0.01 | Wd = 0.0473×(D2H)-0.0102 | 0.14 | -156.31 | 0.07 |
注: W t和Wd分别表示地上植物生物量和地下植物生物量, 单位为kg; 桐花树生物量为分枝生物量, 单株桐花树生物量应将所有分枝生物量相加计算 |
表3 调查站位红树林群落特征Tab. 3 Mangrove community characteristics across sampling stations |
| 站位 | 物种 | 密度/(ind·hm-2) | 基径/cm | 株高/m |
|---|---|---|---|---|
| C1 | 白骨壤 | 11067 | 3.17±0.54 | 1.34±0.26 |
| 红海榄 | 12667 | 2.41±0.58 | 0.70±0.24 | |
| C2 | 木榄 | 10667 | 2.46±1.14 | 1.02±0.37 |
| C3 | 桐花树 | 11200 | 2.43±0.51 | 0.87±0.11 |
| 秋茄 | 3600 | 3.80±2.90 | 0.85±0.45 | |
| C4 | 白骨壤 | 26000 | 2.08±0.80 | 1.09±0.19 |
| C5 | 白骨壤 | 11200 | 2.49±0.38 | 0.77±0.11 |
| 红海榄 | 22000 | 2.09±0.42 | 0.77±0.08 |
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