Biotechnological Management of Resources Network, Institute of Ecology A. C., Xalapa, Veracruz, Mexico.
Biotechnological Management of Resources Network, Institute of Ecology A. C., Xalapa, Veracruz, Mexico; Facultad de Biología, Universidad del Bosque, No 131 A, Ak. 9 #131a2, Bogotá, Colombia.
Sci Total Environ. 2020 Nov 1;741:140276. doi: 10.1016/j.scitotenv.2020.140276. Epub 2020 Jun 17.
The aim of this study was to quantify carbon stocks and the emission of the greenhouse gases (NO and CH) in mangrove forests with different vegetation assemblies in coastal lagoons of Veracruz Mexico. The vegetation included: black mangrove BM, dominated by Avicennia germinans, white mangrove WM, dominated by Laguncularia. racemose, red mangrove RM, dominated by Rhizophora mangle and mixed mangrove MM, dominated by the three species. Soil C stocks ranged 187-671 Mg C ha without significant (p = 0.149) differences among the mangroves with different vegetation. Significantly (p = 0.049) higher tree biomass C stock was observed in RM (127 Mg ha) than in MM (24.23 Mg ha). Methane emissions in RM (0.58-6.03 mg m min) were significantly higher (p < 0.05) than in MM. (0.0035-0.07 mg m min), in WM (-0.0026-0.029 mg m min) and in BM (0.0054-0.0097 mg m min),during rainy, windy and dry season.RM had the longest period of inundation, the highest soil carbon concentration, and the lowest salinity. CH emissions showed a significantly positive correlation with soils carbon concentration, water level and water pH and, negative correlation with water salinity and Cl concentration in soil and water. Emissions of NO (0.04-3.25 μg m min) were not significantly different among the mangroves with different vegetation, but they showed seasonal variations, with higher emissions during windy and dry seasons. NO emissions showed significantly positive correlations with soil nitrate concentration and soil temperature. Results of this research are useful for mangrove conservation and restoration strategies to maximize carbon storage and mitigate greenhouse gas emissions.
本研究的目的是量化墨西哥韦拉克鲁斯沿海泻湖不同植被组合红树林中的碳储量和温室气体（NO 和 CH）的排放。植被包括：黑树（Avicennia germinans）占优势的黑红树林（BM）、叶林（Laguncularia racemose）占优势的白树（WM）、红树（Rhizophora mangle）占优势的红树（RM）和三种树占优势的混合红树林（MM）。土壤 C 储量在 187-671 Mg C ha 之间，不同植被的红树林之间没有显著差异（p = 0.149）。RM 的树木生物量 C 储量（127 Mg ha）明显高于 MM（24.23 Mg ha）（p = 0.049）。RM 的甲烷排放（0.58-6.03 mg m min）明显高于 MM（0.0035-0.07 mg m min）、WM（-0.0026-0.029 mg m min）和 BM（0.0054-0.0097 mg m min），在雨季、有风季节和旱季。RM 有最长的淹没期、最高的土壤碳浓度和最低的盐度。CH 排放与土壤碳浓度、水位和水 pH 值呈显著正相关，与水盐度和土壤及水中的 Cl 浓度呈负相关。NO 排放（0.04-3.25 μg m min）在不同植被的红树林之间没有显著差异，但表现出季节性变化，在有风季节和旱季排放较高。NO 排放与土壤硝酸盐浓度和土壤温度呈显著正相关。本研究的结果对于最大限度地储存碳和减少温室气体排放的红树林保护和恢复策略是有用的。
