真红树和半红树植物叶片氯含量及叶性状的比较

doi:10.17521/cjpe.2007.0062

摘要/Abstract

摘要：

依据红树植物在潮间带的分布,将其分为真红树植物和半红树植物两大类。但对一些过渡地带种类的归属问题一直存在争议。该研究选取国内大部分红树植物,比较其成熟叶片中的Cl含量、肉质化程度、比叶面积(SLA)、单位重量叶氮含量(N_mass)和单位面积叶氮含量(N_area),并对争议树种重新进行界定。结果表明:1)真红树植物叶片中Cl含量和肉质化程度远高于半红树植物;2)真红树植物具有低SLA和高N_area的特点,除水芫花(Pemphis acidula)外半红树植物具有高SLA和低N_area的特点。3)争议的7种红树植物中,银叶树(Heritiera littoralis)、海漆(Excoecaria agallocha)、卤蕨(Acrostichum aureum)和尖叶卤蕨(Acrostichum speciosum)归为半红树植物更合适;老鼠簕(Acanthus ilicifolius)和小花老鼠簕(Acanthus ebrecteatus)归为真红树植物。木果楝(Xylocarpus granatum)有待进一步研究。

关键词: 真红树植物, 半红树植物, 界定, 叶片氯含量, 叶性状

Abstract:

Aims Mangrove plants are usually categorized as true mangrove plants and semi-mangrove plants on the basis of their distribution in inter-tidal regions. However, the identification of some fringe mangrove species found mainly on the landward transitional zones is controversial. Specific leaf area (SLA, leaf area per unit dry mass) and mass- and area-based leaf nitrogen concentrations (N_mass and N_area) are important leaf traits for plants, but relevant comparative research on true and semi-mangrove plants is unavailable. Our objective was to determine differences between the two groups and to classify the controversial species according to their leaf traits. Ultimately, this will assist in the management, protection and utilization of mangrove forest.
Methods Three individuals in similar growth sites were chosen for each species from Hainan Island. Fully expanded mature leaves were sampled from the upper canopy of all plants. Succulence (water content per unit leaf area), SLA, N_mass and N_area of mature leaves were studied for 33 species, representing all but three of the mangrove species in China.
Important findings True mangrove plants accumulated more Cl and water per unit leaf area than semi-mangrove plants, except for Pemphis acidula, Hernandia sonora and Clerodendrum inerme. Cl and water content per unit leaf area of true mangrove plants were generally >2.5 mg·cm^-2 and >2.4 g·dm^-2, respectively. Cl concentrations were positively related to succulence for all mangrove species. True mangrove plants had low SLA (<100 cm ²·g^-1) and high N_area; however, semi-mangrove plants had high SLA (mean of 160.4 cm ²·g^-1). Pemphis acidula had much lower SLA than other semi-mangrove species. Our study suggested that there are significant differences between true mangrove plants and semi-mangrove plants in leaf Cl concentration, succulence, SLA, N_mass and N_area. Heritiera littoralis, Excoecaria agallocha, Acrostichum aureum and Acrostichum speciosum are better classified as semi-mangrove plants, while Acanthus ilicifolius and Acanthus ebrecteatus are classified as true mangrove plants, and Xylocarpus granatum needs further research.

Key words: true mangrove plants, semi-mangrove plants, identification, leaf chloride content, leaf traits

牟美蓉, 蒋巧兰, 王文卿. 真红树和半红树植物叶片氯含量及叶性状的比较. 植物生态学报, 2007, 31(3): 497-504. DOI: 10.17521/cjpe.2007.0062

MU Mei-Rong, JIANG Qiao-Lan, WANG Wen-Qing. COMPARISONS OF LEAF CHLORIDE CONTENT AND LEAF TRAITS BETWEEN TRUE MANGROVE PLANTS AND SEMI-MANGROVE PLANTS. Chinese Journal of Plant Ecology, 2007, 31(3): 497-504. DOI: 10.17521/cjpe.2007.0062

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链接本文: https://www.plant-ecology.com/CN/10.17521/cjpe.2007.0062

https://www.plant-ecology.com/CN/Y2007/V31/I3/497

图/表 5

参考文献 27

[1]	Ball MC (1988). Salinity Tolerance in the Mangroves Aegiceras corniculatum and Avicennia marina. Ⅰ. Water use in relation to growth, carbon partitioning, and salt balance. Australian Journal of Plant Physiology, 15, 447-464.
[2]	Bazzaz FA (1997). Allocation of resources in plants: state of the science and critical questions. In: Bazzaz FA, Gracedds J eds. Plant Resource Allocation. Academic Press, New York, 1-37.
[3]	Fan HQ (范航清) (2000). Mangrove—Safeguard of Environment Protection (海岸环护卫士——红树林). Guangxi Science and Technology Press, Nanning, 18-23. (in Chinese)
[4]	Institute of Tropic Crop of South China (华南热带作物研究院) (1974). Measurement for nitrogen of latex by Nessler's reagent colorimetric method. Communication for Tropical Crop (热作科技通讯), (5), 12-13. (in Chinese)
[5]	Joshi GV, Pimplaskar M, Bhosale LJ (1972). Physiological studies in germination of mangroves. Botanica Marina, 45, 91-95.
[6]	Khan MA, Aziz I (2001). Salinity tolerance in some mangrove species from Pakistan. Wetlands Ecology and Management, 9, 219-223. DOI URL
[7]	Kørner C (1989). The nutrient use efficiency and fertility in forest ecosystems. Oecologia, 81, 379-391. DOI URL PMID
[8]	Kørner C (1991). Some overlooked plant characteristics as determinants of plant growth: a reconsideration. Functional Ecology, 5, 162-173. DOI URL
[9]	Levitt J (1980). Responses of Plant to Environmental Stress 2nd edn. Academic Press, New York, 365-488.
[10]	Li YL (李玉霖), Cui JY (崔建垣), Su YZ (苏永中) (2005). Specific leaf area and leaf dry matter content of some plants in different dune habitats. Acta Ecologica Sinica (生态学报), 25, 304-311. (in Chinese with English abstract)
[11]	Lin P (林鹏) (1987). Distribution of mangrove species. Scientia Silvae Sinicae (林业科学), 23, 481-490. (in Chinese with English abstract)
[12]	Lin P (林鹏) 1993. Species distribution and type of forest aspect of mangrove in China. In: Li ZJ (李振基) ed. Issue of Environment and Ecology (环境与生态论丛). Xiamen University Press, Xiamen, 74-79. (in Chinese with English abstract)
[13]	Lin P(林鹏), Fu Q(傅勤) (1995). Environmental Ecology and Economic Utilization of Mangroves in China (中国红树林环境生态及经济利用). Higher Education Press, Beijing, 23-31. (in Chinese)
[14]	Moorthy P, Kathiresan K (1997). Photosynthetic pigments in tropical mangroves: impacts of seasonal flux of UV-B radiation and other environmental attributes. Botanica Marina, 40, 341-349.
[15]	Mukherjee AK, Acharya LK, Mattagajasingh I, Panda PC, Mohapatra T, Das P (2003). Molecular characterization of three Heritiera species using AFLP markers. Biologia Plantarum, 47, 445-448. DOI URL
[16]	Naidoo G, Tuffers AV, von Willert DJ (2002). Changes in gas exchange and chlorophyll fluorescence characteristics of two mangroves and a mangrove associate in response to salinity in the natural environment. Trees, 16, 140-146. DOI URL
[17]	Paliyavuth C, Clough B, Patanaponpaiboon P (2004). Salt uptake and shoot water relations in mangroves. Aquatic Botany, 78, 349-360. DOI URL
[18]	Poorter H, de Jong JR (1999). A comparison of specific leaf area, chemical composition and leaf construction costs of field plants from 15 habitats differing in productivity. New Phytologist, 143, 163-176. DOI URL
[19]	Scholander PF (1968). How mangrove desalinate seawater. Physiologia Plantarum, 21, 251-256. DOI URL
[20]	Tomlinson PB (1999). The Botany of Mangroves. Cambridge University Press, Cambridge, 26-30, 374-381, 237-242.
[21]	Wang BS (王伯荪), Zhang WY (张炜银), Zan QJ (昝启杰), Liang SC(梁士楚) (2003). Annotation of mangrove plant. Acta Scientiarum Naturalium Universitatis Sunyatseni (中山大学学报(自然科学版)), 42(3), 42-46. (in Chinese with English abstract)
[22]	Wang BS, Liang SC, Zhang WY, Zan QJ (2003a). Mangrove Flora of the World. Acta Botanica Sinica (植物学报), 45, 644-653.
[23]	Wang WQ, Wang M, Lin P (2003b). Seasonal changes in element levels in mangrove leaves and element retranslocation during leaf senescence. Plant and Soil, 252, 187-193. DOI URL
[24]	Wilson PJ, Thompson K, Hodgson J (1999). Specific leaf area and leaf dry matter content as alternative predictors of plant strategies. New Phytologist, 143, 155-162. DOI URL
[25]	Zhao Y (赵亚), Guo YW (郭跃伟) (2004). The proceeding of chemical constituents and pharmacological activities of mangrove. Chinese Journal of Natural Medicines (中国天然药物), 2, 135-140. (in Chinese with English abstract)
[26]	Zhao KF (赵可夫), Feng LT (冯立田), Lu YF (卢元芳), Fan H (范海) (1999). The osmotica and their contributions to the osmotic adjustment in two mangrove species—Avicennia marina (Forsk) Vierh and Kandelia candel (L.) Druce growing in the Fujian Jiulongjia River Estuary of China. Oceanologia et Limonolgia Sinica (海洋与湖沼), 17, 58-61.
[27]	Zheng DZ (郑德璋), Zheng SF (郑松发), Liao BW (廖宝文) (1995). The Dynamic Studies on Mangrove of Qinglan Harbour in Hainan Island (海南岛清澜港红树林发展动态研究). Guangdong Science and Technology Press, Guangzhou, 133-137. (in Chinese)

类别 Groups	物种名 Plant species	单位叶面积Cl含量 Cl content per unit leaf area	肉质化程度 Succulence	取样地及分布潮滩 Site and tide	土壤Cl含量 Cl content of soil
真红树植物 True mangrove plants	1. 红海榄 Rhizophora stylosa	0.65±0.04	5.03±0.02	东寨港(中潮滩) Dongzhai Harbour (Meso-tide bank)	8.36
	2. 正红树R. apiculata	0.57±0.06	4.68±0.27	清澜港(中高潮滩) Qianglan Harbour (Meso- and high-tide bank)	8.23
	3. 木榄 Bruguiera gymnorhiza	0.57±0.12	3.48±0.71	东寨港(中高潮滩) Dongzhai Harbour (Meso- and high-tide bank)	10.04
	4. 海莲 B. sexangula	0.31±0.02	2.41±0.30	东寨港(中高潮滩) Dongzhai Harbour (Meso- and high-tide bank)	15.56
	5. 尖瓣海莲 B. sexangula var. rhynchopetala	0.29±0.02	2.53±0.27	东寨港(中高潮滩) Dongzhai Harbour (Meso- and high-tide bank)	13.04
	6. 秋茄 Kandelia obovata	0.26±0.03	3.43±0.08	东寨港(中潮滩) Dongzhai Harbour (Meso-tide bank)	6.6
	7. 角果木 Ceriops tagal	0.47±0.16	4.39±1.37	东寨港(高潮滩) Dongzhai Harbour (High-tide bank)	8.82
	8. 瓶花木 Scyphiphora hydrophyllacea	0.66±0.04	4.58±0.19	清澜港(中高潮滩) Qianglan Harbour (Meso- and high-tide bank)	9.20
	9. 榄李 Lumnitzera racemosa	0.62±0.10	4.82±0.85	清澜港(中高潮滩) Qianglan Harbour (Meso- and high-tide bank)	9.20
	10. 红榄李 L. littorea	0.63±0.05	4.73±0.29	铁炉港(高潮滩) Tielu Harbour (High-tide bank)	5.34
	11. 海桑 Sonneratia caeseolaris	0.44±0.04	4.65±0.36	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	5.81
	12. 拟海桑 S. × gulngai	0.35±0.10	3.59±0.39	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	6.75
	13. 杯萼海桑 S. alba	0.43±0.14	4.15±0.58	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	6.32
	14. 卵叶海桑 S. ovata	0.44±0.01	4.28±0.07	东寨港(高潮滩) Dongzhai Harbour (High-tide Bank)	5.11
	15. 白骨壤 Avicennia marina	0.28±0.04	2.82±0.19	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	7.07
	16. 桐花树 Aegiceras corniculatum	0.25±0.03	2.81±0.05	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	8.15
	平均值 Average	0.45±0.15	3.90±0.89		8.35±2.78
半红树植物 Semi-mangrove plants	17. 黄槿 Hibiscus tiliaceus	0.04±0.00	1.70±0.18	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	0.59
	18. 水黄皮 Pongamia pinnata	0.02±0.00	0.81±0.11	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	1.02
	19. 杨叶肖槿 Thespesia populnea	0.09±0.01	1.59±0.02	东寨港(高潮滩) Dongzhai Harbour (High-tide bank)	1.57
	20. 海滨猫尾木Dolichandrone spathaceae	0.03	1.38	清澜港(特大高潮滩) Qinglan Harbour (Megalo-tide bank)	0.50
	21. 阔苞菊 Pluchea indica	0.09±0.01	2.26±0.20	东寨港(特大高潮滩) Dongzhai Harbour (Megalo-tide bank)	2.00
	22. 玉蕊 Barringtonia racemosa	0.06±0.01	2.65±0.13	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	1.57
	23. 海芒果 Cerbera manghas	0.036	3.23	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	0.58
	24. 莲叶桐 Hernandia sonora	0.26	3.58	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	-
类别 Groups	物种名 Plant species	单位叶面积Cl含量 Cl content per unit leaf area	肉质化程度 Succulence	取样地及分布潮滩 Site and tide	土壤Cl含量 Cl content of soil
	25. 许树 Clerodendrum inerme	0.39±0.12	3.75±0.93	东寨港(高潮滩) Qinglan Harbour (High-tide bank)	2.98
	26. 水芫花 Pemphis acidula	1.32	6.99	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	-
	平均值Average	0.23±0.40	2.79±1.77		1.35±0.86
争议物种 Controversial species	27. 银叶树 Heritiera littoralis	0.06±0.00	1.88±0.19	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	5.19
	28. 卤蕨 Acrostichum aureum	0.15±0.03	2.23±0.12	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	2.97
	29. 尖叶卤蕨 A. speciosum	0.15±0.02	2.26±0.10	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	1.77
	30. 海漆 Excoecaria agallocha	0.15±0.06	2.25±0.38	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	2.82
	31. 木果楝 Xylocarpus granatum	0.29±0.03	2.72±0.12	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	3.40
	32. 老鼠簕Acanthus ilicifolius	0.44	4.47	东寨港(高潮滩) Dongzhai Harbour (High-tide bank)	7.58
	33. 小花老鼠簕A. ebrecteatus	0.42	4.58	东寨港(高潮滩) Dongzhai Harbour (High-tide bank)	4.70
	样品总体平均值 Average in total	0.34±0.27	3.36±1.33		6.02±4.08

类别 Groups	物种名 Plant species	单位叶面积Cl含量 Cl content per unit leaf area	肉质化程度 Succulence	取样地及分布潮滩 Site and tide	土壤Cl含量 Cl content of soil
真红树植物 True mangrove plants	1. 红海榄 Rhizophora stylosa	0.65±0.04	5.03±0.02	东寨港(中潮滩) Dongzhai Harbour (Meso-tide bank)	8.36
	2. 正红树R. apiculata	0.57±0.06	4.68±0.27	清澜港(中高潮滩) Qianglan Harbour (Meso- and high-tide bank)	8.23
	3. 木榄 Bruguiera gymnorhiza	0.57±0.12	3.48±0.71	东寨港(中高潮滩) Dongzhai Harbour (Meso- and high-tide bank)	10.04
	4. 海莲 B. sexangula	0.31±0.02	2.41±0.30	东寨港(中高潮滩) Dongzhai Harbour (Meso- and high-tide bank)	15.56
	5. 尖瓣海莲 B. sexangula var. rhynchopetala	0.29±0.02	2.53±0.27	东寨港(中高潮滩) Dongzhai Harbour (Meso- and high-tide bank)	13.04
	6. 秋茄 Kandelia obovata	0.26±0.03	3.43±0.08	东寨港(中潮滩) Dongzhai Harbour (Meso-tide bank)	6.6
	7. 角果木 Ceriops tagal	0.47±0.16	4.39±1.37	东寨港(高潮滩) Dongzhai Harbour (High-tide bank)	8.82
	8. 瓶花木 Scyphiphora hydrophyllacea	0.66±0.04	4.58±0.19	清澜港(中高潮滩) Qianglan Harbour (Meso- and high-tide bank)	9.20
	9. 榄李 Lumnitzera racemosa	0.62±0.10	4.82±0.85	清澜港(中高潮滩) Qianglan Harbour (Meso- and high-tide bank)	9.20
	10. 红榄李 L. littorea	0.63±0.05	4.73±0.29	铁炉港(高潮滩) Tielu Harbour (High-tide bank)	5.34
	11. 海桑 Sonneratia caeseolaris	0.44±0.04	4.65±0.36	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	5.81
	12. 拟海桑 S. × gulngai	0.35±0.10	3.59±0.39	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	6.75
	13. 杯萼海桑 S. alba	0.43±0.14	4.15±0.58	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	6.32
	14. 卵叶海桑 S. ovata	0.44±0.01	4.28±0.07	东寨港(高潮滩) Dongzhai Harbour (High-tide Bank)	5.11
	15. 白骨壤 Avicennia marina	0.28±0.04	2.82±0.19	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	7.07
	16. 桐花树 Aegiceras corniculatum	0.25±0.03	2.81±0.05	东寨港(中低潮滩) Dongzhai Harbour (Meso- and low-tide Bank)	8.15
	平均值 Average	0.45±0.15	3.90±0.89		8.35±2.78
半红树植物 Semi-mangrove plants	17. 黄槿 Hibiscus tiliaceus	0.04±0.00	1.70±0.18	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	0.59
	18. 水黄皮 Pongamia pinnata	0.02±0.00	0.81±0.11	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	1.02
	19. 杨叶肖槿 Thespesia populnea	0.09±0.01	1.59±0.02	东寨港(高潮滩) Dongzhai Harbour (High-tide bank)	1.57
	20. 海滨猫尾木Dolichandrone spathaceae	0.03	1.38	清澜港(特大高潮滩) Qinglan Harbour (Megalo-tide bank)	0.50
	21. 阔苞菊 Pluchea indica	0.09±0.01	2.26±0.20	东寨港(特大高潮滩) Dongzhai Harbour (Megalo-tide bank)	2.00
	22. 玉蕊 Barringtonia racemosa	0.06±0.01	2.65±0.13	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	1.57
	23. 海芒果 Cerbera manghas	0.036	3.23	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	0.58
	24. 莲叶桐 Hernandia sonora	0.26	3.58	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	-
类别 Groups	物种名 Plant species	单位叶面积Cl含量 Cl content per unit leaf area	肉质化程度 Succulence	取样地及分布潮滩 Site and tide	土壤Cl含量 Cl content of soil
	25. 许树 Clerodendrum inerme	0.39±0.12	3.75±0.93	东寨港(高潮滩) Qinglan Harbour (High-tide bank)	2.98
	26. 水芫花 Pemphis acidula	1.32	6.99	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	-
	平均值Average	0.23±0.40	2.79±1.77		1.35±0.86
争议物种 Controversial species	27. 银叶树 Heritiera littoralis	0.06±0.00	1.88±0.19	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	5.19
	28. 卤蕨 Acrostichum aureum	0.15±0.03	2.23±0.12	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	2.97
	29. 尖叶卤蕨 A. speciosum	0.15±0.02	2.26±0.10	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	1.77
	30. 海漆 Excoecaria agallocha	0.15±0.06	2.25±0.38	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	2.82
	31. 木果楝 Xylocarpus granatum	0.29±0.03	2.72±0.12	清澜港(高潮滩) Qinglan Harbour (High-tide bank)	3.40
	32. 老鼠簕Acanthus ilicifolius	0.44	4.47	东寨港(高潮滩) Dongzhai Harbour (High-tide bank)	7.58
	33. 小花老鼠簕A. ebrecteatus	0.42	4.58	东寨港(高潮滩) Dongzhai Harbour (High-tide bank)	4.70
	样品总体平均值 Average in total	0.34±0.27	3.36±1.33		6.02±4.08

类别 Groups	物种 Plant species	单位重量叶氮含量 N_mass(mg·g^-1)	单位面积叶氮含量 N_area(g·m^-2)
真红树植物 True mangrove plants	1. 红海榄Rhizophora stylosa	14.22±1.35	2.83±0.03
	2. 正红树 Rhizophora apiculata	12.13±2.30	2.77±0.04
	3. 木榄 Bruguiera gymnorhiza	15.11±2.04	2.17±0.00
	4. 海莲 B. sexangula	13.19±0.44	1.98±0.04
	5. 尖瓣海莲 B. sexangula var. rhynchopetala	13.92±1.17	1.66±0.02
	6. 秋茄 Kandelia obovata	18.96±1.58	2.96±0.03
	7. 角果木 Ceriops tagal	8.56±0.93	2.12±0.05
	8. 瓶花木 Scyphiphora hydrophyllacea	10.06±1.43	1.24±0.02
	9. 榄李 Lumnitzera racemosa	14.03±1.67	1.51±0.01
	10. 红榄李 L. littorea	9.56±0.84	1.57±0.01
	11. 海桑 Sonneratia caeseolaris	26.66±0.92	3.04±0.04
	12. 拟海桑 S. × gulngai	24.99±2.89	2.69±0.06
	13. 杯萼海桑 S. alba	30.89±1.53	4.10±0.03
	14. 卵叶海桑 S. ovata	13.00±0.97	1.73±0.01
	15. 白骨壤 Avicennia marina	22.86±1.37	3.14±0.02
	16. 桐花树 Aegiceras corniculatum	13.35±0.51	2.02±0.01
	平均值 Average	16.34±6.60	2.35±0.77
半红树植物 Semi-mangrove plants	17. 黄槿 Hibiscus tiliaceus	25.95±1.74	2.02±0.01
	18. 水黄皮 Pongamia pinnata	36.07±6.41	1.81±0.03
	19. 杨叶肖槿 Thespesia populnea	15.93±1.81	1.11±0.00
	20. 海滨猫尾木Dolichandrone spathaceae	29.02	1.36
	21. 阔苞菊 Pluchea indica	30.22±3.41	1.74±0.01
	22. 玉蕊 Barringtonia racemosa	23.69±1.18	1.64±0.01
	23. 海芒果 Cerbera manghas	36.46	1.6
	24. 莲叶桐 Hernandia sonora	24.94	1.86
	25. 许树 Clerodendrum inerme	24.58±2.81	1.60±0.03
	26. 水芫花 Pemphis acidula	15.93	1.78
	平均值 Average	26.28±7.06	1.51±0.54
争议树种 Controversial species	27. 银叶树 Heritiera littoralis	16.68±0.62	2.36±0.04
	28. 卤蕨 Acrostichum aureum	16.14±1.32	1.52±0.05
	29. 尖叶卤蕨 A. speciosum	22.24±2.03	1.55±0.01
	30. 海漆 Excoecaria agallocha	23.14±2.06	1.80±0.03
	31. 木果楝 Xylocarpus granatum	22.82±1.43	1.82±0.02
	32. 老鼠 Acanthus ilicifolius	21.96	2.21
	33. 小花老鼠 A. ebrecteatus	18.93	1.74
	样品总体平均值 Average in total	20.19±7.42	1.99±0.72

类别 Groups	物种 Plant species	单位重量叶氮含量 N_mass(mg·g^-1)	单位面积叶氮含量 N_area(g·m^-2)
真红树植物 True mangrove plants	1. 红海榄Rhizophora stylosa	14.22±1.35	2.83±0.03
	2. 正红树 Rhizophora apiculata	12.13±2.30	2.77±0.04
	3. 木榄 Bruguiera gymnorhiza	15.11±2.04	2.17±0.00
	4. 海莲 B. sexangula	13.19±0.44	1.98±0.04
	5. 尖瓣海莲 B. sexangula var. rhynchopetala	13.92±1.17	1.66±0.02
	6. 秋茄 Kandelia obovata	18.96±1.58	2.96±0.03
	7. 角果木 Ceriops tagal	8.56±0.93	2.12±0.05
	8. 瓶花木 Scyphiphora hydrophyllacea	10.06±1.43	1.24±0.02
	9. 榄李 Lumnitzera racemosa	14.03±1.67	1.51±0.01
	10. 红榄李 L. littorea	9.56±0.84	1.57±0.01
	11. 海桑 Sonneratia caeseolaris	26.66±0.92	3.04±0.04
	12. 拟海桑 S. × gulngai	24.99±2.89	2.69±0.06
	13. 杯萼海桑 S. alba	30.89±1.53	4.10±0.03
	14. 卵叶海桑 S. ovata	13.00±0.97	1.73±0.01
	15. 白骨壤 Avicennia marina	22.86±1.37	3.14±0.02
	16. 桐花树 Aegiceras corniculatum	13.35±0.51	2.02±0.01
	平均值 Average	16.34±6.60	2.35±0.77
半红树植物 Semi-mangrove plants	17. 黄槿 Hibiscus tiliaceus	25.95±1.74	2.02±0.01
	18. 水黄皮 Pongamia pinnata	36.07±6.41	1.81±0.03
	19. 杨叶肖槿 Thespesia populnea	15.93±1.81	1.11±0.00
	20. 海滨猫尾木Dolichandrone spathaceae	29.02	1.36
	21. 阔苞菊 Pluchea indica	30.22±3.41	1.74±0.01
	22. 玉蕊 Barringtonia racemosa	23.69±1.18	1.64±0.01
	23. 海芒果 Cerbera manghas	36.46	1.6
	24. 莲叶桐 Hernandia sonora	24.94	1.86
	25. 许树 Clerodendrum inerme	24.58±2.81	1.60±0.03
	26. 水芫花 Pemphis acidula	15.93	1.78
	平均值 Average	26.28±7.06	1.51±0.54
争议树种 Controversial species	27. 银叶树 Heritiera littoralis	16.68±0.62	2.36±0.04
	28. 卤蕨 Acrostichum aureum	16.14±1.32	1.52±0.05
	29. 尖叶卤蕨 A. speciosum	22.24±2.03	1.55±0.01
	30. 海漆 Excoecaria agallocha	23.14±2.06	1.80±0.03
	31. 木果楝 Xylocarpus granatum	22.82±1.43	1.82±0.02
	32. 老鼠 Acanthus ilicifolius	21.96	2.21
	33. 小花老鼠 A. ebrecteatus	18.93	1.74
	样品总体平均值 Average in total	20.19±7.42	1.99±0.72