Detecting dynamic changes in mangrove forests in the Dandou Sea, Beibu Gulf

Abstract

Mangrove forests are significant ecosystems worldwide and play a crucial role in maintaining the biodiversity of intertidal zones in tropical and subtropical regions. However, most mangroves have experienced large-scale losses due to anthropogenic activities and natural stress from environmental factors. Here, the dynamic changes in mangroves in the Dandou Sea (DDS) of the Beibu Gulf between 1987 and 2021 were analyzed via multispectral satellite remote sensing data from the Google Earth Engine Platform. The results indicated that the area of mangroves in the DDS increased from 225.90 ha in 1987 to 451.76 ha in 2021. Throughout this period, the overall mangrove area in the DDS, as well as in its western and central parts, underwent a rapid growth phase from 1987 to 1996, followed by a slow growth phase from 1997 to 2011, and eventually entered a stagnation phase from 2013 to 2021. Moreover, due to the biological invasion caused by Spartina alterniflora, the mangrove forests in this area tended toward fragmentation. Moreover, S. alterniflora suppressed the spread of mangrove forests, accounting for up to 41.69% of the total loss. In a similar vein, the local high-intensity economic activities within the tidal flat accounted for 32.55% of the mangrove loss. Additionally, the expansion of aquaculture ponds and construction land directly accounted for 9.45% and 7.91% of the mangrove loss, respectively. Furthermore, the establishment of mangrove nature reserves played a positive role in the restoration and expansion of mangroves in the DDS. Our results also demonstrated that sea level rise had little impact on mangrove retreat.

Graphical abstract

Keywords

mangrove forests / human activities / sea level rise / Dandou Sea / Google Earth Engine

References

[1] Abdul Azeez S, Gnanappazham L, Muraleedharan K R, Revichandran C, Sebin J, Seena G, Jubin T (2022). Multi-decadal changes of mangrove forest and its response to the tidal dynamics of thane creek, Mumbai.J Sea Res, 180: 102162

[2] Afonso F, Palma C, Brito A C, Chainho P, de Lima R, Heumüller J A, Ribeiro F, Félix P M (2023). Metal and semimetal loadings in sediments and water from mangrove ecosystems: a preliminary assessment of anthropogenic enrichment in São Tomé island (central Africa).Chemosphere, 334: 138973

[3] Amani M, Ghorbanian A, Ahmadi S A, Kakooei M, Moghimi A, Mirmazloumi S M, Moghaddam S H A, Mahdavi S, Ghahremanloo M, Parsian S, Wu Q, Brisco B (2020). Google earth engine cloud computing platform for remote sensing big data applications: a comprehensive review.IEEE J Sel Top Appl Earth Obs Remote Sens, 13: 5326–5350

[4] Asbridge E, Lucas R, Rogers K, Accad A (2018). The extent of mangrove change and potential for recovery following severe Tropical Cyclone Yasi, Hinchinbrook Island, Queensland, Australia.Ecol Evol, 8(21): 10416–10434

[5] Baloloy A B, Blanco A C, Sta. Ana R R C S, Nadaoka K (2020). Development and application of a new mangrove vegetation index (MVI) for rapid and accurate mangrove mapping.ISPRS J Photogramm Remote Sens, 166: 95–117

[6] Bimrah K, Dasgupta R, Hashimoto S, Saizen I, Dhyani S (2022). Ecosystem services of mangroves: A systematic review and synthesis of contemporary scientific literature.Sustainability (Basel), 14(19): 12051

[7] Bunting P, Rosenqvist A, Hilarides L, Lucas R M, Thomas N, Tadono T, Worthington T A, Spalding M, Murray N J, Rebelo L M (2022). Global mangrove extent change 1996–2020: global mangrove watch version 3.0.Remote Sens (Basel), 14(15): 3657

[8] Chen Q, Ma K M (2015). Research overview and trend on biological invasion in mangrove forests.Acta Phytoecol Sin, 39(3): 283–299

[9] Darby S E, Hackney C R, Leyland J, Kummu M, Lauri H, Parsons D R, Best J L, Nicholas A P, Aalto R (2016). Fluvial sediment supply to a mega-delta reduced by shifting tropical-cyclone activity.Nature, 539(7628): 276–279

[10] De Almeida L T, Olímpio J L S, Pantalena A F, De Almeida B S, De Oliveira Soares M (2016). Evaluating ten years of management effectiveness in a mangrove protected area.Ocean Coast Manage, 125: 29–37

[11] Deng Z F, Xie X L, Wang Z S, An S Q (2010). Effects of substrate and water level on the growth of invasive species Spartina alterniflora.Chinese J Eco, 29(02): 256–260

[12] Donato D C, Kauffman J B, Murdiyarso D, Kurnianto S, Stidham M, Kanninen M (2011). Mangroves among the most carbon-rich forests in the tropics.Nat Geosci, 4(5): 293–297

[13] Du C, Khan S, Ke Y, Zhou D (2023). Assessment of spatiotemporal dynamics of mangrove in five typical mangrove reserve wetlands in Asia, Africa and Oceania.Diversity (Basel), 15(2): 148

[14] Duke N C, Meynecke J O, Dittmann S, Ellison A M, Anger K, Berger U, Cannicci S, Diele K, Ewel K C, Field C D, Koedam N, Lee S Y, Marchand C, Nordhaus I, Dahdouh-Guebas F (2007). A world without mangroves.Science, 317(5834): 41–42

[15] Feller I C, Lovelock C E, Berger U, McKee K L, Joye S B, Ball M C (2010). Biocomplexity in mangrove ecosystems.Annu Rev Mar Sci, 2(1): 395–417

[16] Feng Z, Tan G, Xia J, Shu C, Chen P, Wu M, Wu X (2020). Dynamics of mangrove forests in Shenzhen Bay in response to natural and anthropogenic factors from 1988 to 2017.J Hydrol (Amst), 591: 125271

[17] Gao G F, Li P F, Shen Z J, Qin Y Y, Zhang X M, Ghoto K, Zhu X Y, Zheng H L (2018). Exotic Spartina alterniflora invasion increases CH₄ while reduces CO₂ emissions from mangrove wetland soils in southeastern China.Sci Rep, 8(1): 9243

[18] Getzner M, Islam M S (2020). Ecosystem services of mangrove forests: Results of a meta-analysis of economic values.Int J Environ Res Public Health, 17(16): 5830

[19] Gilani H, Naz H I, Arshad M, Nazim K, Akram U, Abrar A, Asif M (2021). Evaluating mangrove conservation and sustainability through spatiotemporal (1990–2020) mangrove cover change analysis in Pakistan.Estuar Coast Shelf Sci, 249: 107128

[20] Giri C, Pengra B, Zhu Z, Singh A, Tieszen L L (2007). Monitoring mangrove forest dynamics of the Sundarbans in Bangladesh and India using multi-temporal satellite data from 1973 to 2000.Estuar Coast Shelf Sci, 73(1−2): 91–100

[21] Gitau P N, Duvail S, Verschuren D (2023). Evaluating the combined impacts of hydrological change, coastal dynamics and human activity on mangrove cover and health in the Tana River delta, Kenya.Regional Studies in Marine Science, 61: 102898

[22] Gorelick N, Hancher M, Dixon M, Ilyushchenko S, Thau D, Moore R (2017). Google Earth Engine: planetary-scale geospatial analysis for everyone.Remote Sens Environ, 202: 18–27

[23] Hauser L T, Nguyen Vu G, Nguyen B A, Dade E, Nguyen H M, Nguyen T T Q, Le T Q, Vu L H, Tong A T H, Pham H V (2017). Uncovering the spatio-temporal dynamics of land cover change and fragmentation of mangroves in the Ca Mau peninsula, Vietnam using multi-temporal SPOT satellite imagery (2004–2013).Appl Geogr, 86: 197–207

[24] He Q F, Fan H Q, Mo Z C, Wang X, Shen W H (2012). Impacts of digging Phascolosoma esculenta on the growth of mangrove Avicennia marina seedlings: a simulation study.Chinese J App Eco, 23(04): 947–952

[25] Huang X, Yuan J J, Wang X P, Yue K K, Zhang Q (2022). Dynamics of mangrove change: insights from 30-year observations of Maowei Sea.J Mar Sci, 40(03): 132–141

[26] Jayanthi M, Samynathan M, Thirumurthy S, Duraismay M, Kabiraj S, Vijayakumar S, Panigrahi A, Kumaran M, Muralidhar M (2022). Is aquaculture development responsible for mangrove conversion in India?-A geospatial study to assess the influence of natural and anthropogenic factors on mangroves in the last three decades.Aquaculture, 561: 738696

[27] Jia M, Wang Z, Zhang Y, Ren C, Song K (2015). Landsat-based estimation of mangrove forest loss and restoration in Guangxi province, China, influenced by human and natural factors.IEEE J Sel Top Appl Earth Obs Remote Sens, 8(1): 311–323

[28] Jiang X H, Xie L J, Ye S Y, Zhou P, Pei L X, Chen H, Zhao L H (2022). Responses of photosynthetic charactristics of Phragmites australis and Spartina alterniflora to the simulated warming in Jiangsu coastal wetlands.Acta Ecol Sin, 42(19): 7760–7772

[29] Kirwan M L, Megonigal J P (2013). Tidal wetland stability in the face of human impacts and sea-level rise.Nature, 504(7478): 53–60

[30] Krauss K W, From A S, Doyle T W, Doyle T J, Barry M J (2011). Sea-level rise and landscape change influence mangrove encroachment onto marsh in the Ten Thousand Islands region of Florida, USA.J Coast Conserv, 15(4): 629–638

[31] Le Minor M, Bartzke G, Zimmer M, Gillis L, Helfer V, Huhn K (2019). Numerical modelling of hydraulics and sediment dynamics around mangrove seedlings: Implications for mangrove establishment and reforestation.Estuar Coast Shelf Sci, 217: 81–95

[32] Lee S Y, Hamilton S, Barbier E B, Primavera J, Lewis R R III (2019). Better restoration policies are needed to conserve mangrove ecosystems.Nat Ecol Evol, 3(6): 870–872

[33] Li S, Dai Z, Ge Z, Xie H, Huang H (2014). Research on the changes of the ecological environment disasters along the northern Beibu Gulf.J Catastroph, 29(4): 43–47

[34] Liu H Y, Zhou Y, Guo Z R, Dai L J, Wang C, Wang G, Li Y F (2021). A conceptual ecological model for large-scale salt marsh restoration: a case study of Yancheng.Chinese J Eco, 40(01): 278–291

[35] Liu M, Mao D, Wang Z, Li L, Man W, Jia M, Ren C, Zhang Y (2018). Rapid invasion of Spartina alterniflora in the coastal zone of mainland China: new observations from Landsat OLI images.Remote Sens (Basel), 10(12): 1933

[36] Liu T, Tao Y, Liu Y (2017). Mangrove swamp expansion controlled by climate since 1988: a case study in the Nanliu River Estuary, Guangxi, Southwest China.Acta Oceanol Sin, 36(12): 11–17

[37] Long C, Dai Z, Wang R, Lou Y, Zhou X, Li S, Nie Y (2022). Dynamic changes in mangroves of the largest delta in northern Beibu Gulf, China: reasons and causes.For Ecol Manage, 504: 119855

[38] Long C, Dai Z, Zhou X, Mei X, Mai Van C (2021). Mapping mangrove forests in the Red River Delta, Vietnam.For Ecol Manage, 483: 118910

[39] Long J, Giri C, Primavera J, Trivedi M (2016). Damage and recovery assessment of the Philippines’ mangroves following Super Typhoon Haiyan.Mar Pollut Bull, 109(2): 734–743

[40] López-Medellín X, Ezcurra E, González-Abraham C, Hak J, Santiago L S, Sickman J O (2011). Oceanographic anomalies and sea‐level rise drive mangroves inland in the Pacific coast of Mexico.J Veg Sci, 22(1): 143–151

[41] Lovelock C E, Feller I C, Reef R, Hickey S, Ball M C (2017). Mangrove dieback during fluctuating sea levels.Sci Rep, 7(1): 1680

[42] Lu C, Li L, Wang Z, Su Y, Su Y, Huang Y, Jia M, Mao D (2022). The national nature reserves in China: are they effective in conserving mangroves.Ecol Indic, 142: 109265

[43] Lu C, Liu J, Jia M, Liu M, Man W, Fu W, Zhong L, Lin X, Su Y, Gao Y (2018). Dynamic analysis of mangrove forests based on an optimal segmentation scale model and multi-seasonal images in Quanzhou Bay, China.Remote Sens (Basel), 10(12): 2020

[44] Macedo H S, Vivacqua M, Rodrigues H C L, Gerhardinger L C (2013). Governing wide coastal-marine protected territories: a governance analysis of the Baleia Franca Environmental Protection Area in South Brazil.Mar Policy, 41: 118–125

[45] McGarigalK, MarksB J (1995). Spatial pattern analysis program for quantifying landscape structure. Gen. Tech. Rep. PNW-GTR-351. US Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1–122

[46] Monga E, Mangora M M, Trettin C C (2022). Impact of mangrove planting on forest biomass carbon and other structural attributes in the Rufiji Delta, Tanzania.Glob Ecol Conserv, 35: e02100

[47] Morocho R, González I, Ferreira T O, Otero X L (2022). Mangrove forests in Ecuador: a two-decade analysis.Forests, 13(5): 656

[48] Morrissette H K, Baez S K, Beers L, Bood N, Martinez N D, Novelo K, Andrews G, Balan L, Beers C S, Betancourt S A, Blanco R, Bowden E, Burns-Perez V, Carcamo M, Chevez L, Crooks S, Feller I C, Galvez G, Garbutt K, Gongora R, Grijalva E, Lefcheck J, Mahung A, Mattis C, McKoy T, McLaughlin D, Meza J, Pott E, Ramirez G, Ramnarace V, Rash A, Rosado S, Santos H, Santoya L, Sosa W, Ugarte G, Viamil J, Young A, Young J, Canty S W (2023). Belize Blue Carbon: establishing a national carbon stock estimate for mangrove ecosystems.Sci Total Environ, 870: 161829

[49] MouN X, LiuW B, WangH Y, Dai H L (2012). ArcGIS 10 Tutorial: from Beginner to Master. Beijing: Surveying and Mapping Press, 311–318

[50] Murillo-Sandoval P J, Fatoyinbo L, Simard M (2022). Mangroves cover change trajectories 1984–2020: the gradual decrease of mangroves in Colombia.Front Mar Sci, 9: 892946

[51] Nguyen H T T, Hardy G E, Le T V, Nguyen H Q, Nguyen H H, Nguyen T V, Dell B (2021). Mangrove forest landcover changes in coastal Vietnam: a case study from 1973 to 2020 in Thanh Hoa and Nghe An provinces.Forests, 12(5): 637

[52] Ofori S A, Kodikara S K, Jayatissa L P, Madarasinghe S K, Nijamdeen T M, Dahdouh-Guebas F (2023). What is the ecological footprint of aquaculture after 5 decades of competition between mangrove conservation and shrimp farm development.Aquat Conserv, 33(1): 15–28

[53] Osorio-Olvera L, Rioja-Nieto R, Torres-Irineo E, Guerra-Martínez F (2023). Natural Protected Areas effect on the cover change rate of mangrove forests in the Yucatan Peninsula, Mexico.Wetlands, 43(5): 52

[54] Pan L H, Shi X F, Tao Y C, Fan H Q, Mo Z C (2016). Distribution and expansion of Spartina alterniflora in coastal tidal zone, Guangxi.Wetland Sci, 14(4): 464–470

[55] Phan M H, Stive M J (2022). Managing mangroves and coastal land cover in the Mekong Delta.Ocean Coast Manage, 219: 106013

[56] Polidoro B A, Carpenter K E, Collins L, Duke N C, Ellison A M, Ellison J C, Farnsworth E J, Fernando E S, Kathiresan K, Koedam N E, Livingstone S R, Miyagi T, Moore G E, Ngoc Nam V, Ong J E, Primavera J H, Salmo S G III, Sanciangco J C, Sukardjo S, Wang Y, Yong J W H (2010). The loss of species: mangrove extinction risk and geographic areas of global concern.PLoS One, 5(4): e10095

[57] Qi Y, Liu D, Huang X, Pu X (2019). Topographical mapping of a bare tidal flat outside a mangrove area based on the waterline method and an iterative hydrodynamic model: a case study of Yingluo Bay, South China.Mar Geod, 42(3): 263–285

[58] Reef R, Feller I C, Lovelock C E (2010). Nutrition of mangroves.Tree Physiol, 30(9): 1148–1160

[59] Rouse J W, Haas R H, Schell J A, Deering D W (1974). Monitoring vegetation systems in the Great Plains with ERTS.NASA Spec Publ, 351(1): 309

[60] Rull V (2023). Rise and fall of Caribbean mangroves.Sci Total Environ, 885: 163851

[61] Shen H K, Zhao B Y, Chen M Y, Huang R Y, Yu K F, Liang W (2022). Changes of the area of Spartina alterniflora and mangroves in Guangxi Shankou Mangrove National Nature Reserve from 1995 to 2019.Chinese J App Eco, 33(2): 397–404

[62] Shi M, Li H, Jia M (2023). Spatio-temporal variations in mangrove forests in the Shankou Mangrove Nature Reserve based on the GEE cloud platform and Landsat data.Remote Sens Nat Resour, 35(2): 61–69

[63] Simard M, Fatoyinbo L, Smetanka C, Rivera-Monroy V H, Castañeda-Moya E, Thomas N, Van der Stocken T (2019). Mangrove canopy height globally related to precipitation, temperature and cyclone frequency.Nat Geosci, 12(1): 40–45

[64] Sippo J Z, Lovelock C E, Santos I R, Sanders C J, Maher D T (2018). Mangrove mortality in a changing climate: an overview.Estuar Coast Shelf Sci, 215: 241–249

[65] Soeprobowati T R, Sularto R B, Hadiyanto H, Puryono S, Rahim A, Jumari J, Gell P (2024). The carbon stock potential of the restored mangrove ecosystem of Pasarbanggi, Rembang, Central Java.Mar Environ Res, 193: 106257

[66] Tang R, Dai Z, Zhou X, Li S (2021). Tropical cyclone-induced water and suspended sediment discharge delivered by mountainous rivers into the Beibu Gulf, south China.Geomorphology, 389: 107844

[67] Tinh P H, MacKenzie R A, Hung T D, Hanh N T H, Hanh N H, Manh D Q, Ha H T, Tuan M S (2022). Distribution and drivers of Vietnam mangrove deforestation from 1995 to 2019.Mitig Adapt Strategies Glob Change, 27(4): 29

[68] Tran T V, Reef R, Zhu X (2022). A review of spectral indices for mangrove remote sensing.Remote Sens (Basel), 14(19): 4868

[69] Turschwell M P, Tulloch V J, Sievers M, Pearson R M, Andradi-Brown D A, Ahmadia G N, Connolly R M, Bryan-Brown D, Lopez-Marcano S, Adame M F, Brown C J (2020). Multi-scale estimation of the effects of pressures and drivers on mangrove forest loss globally.Biol Conserv, 247: 108637

[70] TwilleyR R, Castañeda-Moya E, Rivera-MonroyV H, RovaiA (2017). Productivity and carbon dynamics in mangrove wetlands. In: Rivera-Monroy V H, Lee S Y, Kristensen E, Twilley R R, eds. Mangrove Ecosystems: A Global Biogeographic Perspective: Structure, Function, and Services, 113–162

[71] Walcker R, Laplanche C, Herteman M, Lambs L, Fromard F (2019). Damages caused by hurricane Irma in the human-degraded mangroves of Saint Martin (Caribbean).Sci Rep, 9(1): 18971

[72] Wang G, Guan D, Xiao L, Peart M R, Zhang H, Singh M (2019b). Changes in mangrove community structures affecting sediment carbon content in Yingluo Bay of south China.Mar Pollut Bull, 149: 110581

[73] Wang G, Guan D, Zhang Q, Peart M R, Chen Y, Peng Y, Ling X (2014). Spatial patterns of biomass and soil attributes in an estuarine mangrove forest (Yingluo Bay, south China).Eur J For Res, 133(6): 993–1005

[74] Wang R, Dai Z, Huang H, Liang X, Zhou X, Ge Z, Hu B (2023). Dramatic changes in the horizontal structure of mangrove forests in the largest delta of the northern Beibu Gulf, China.Acta Oceanol Sin, 42(7): 116–123

[75] Wang W, Sardans J, Wang C, Zeng C, Tong C, Chen G, Huang J, Pan H, Peguero G, Vallicrosa H, Peñuelas J (2019a). The response of stocks of C, N, and P to plant invasion in the coastal wetlands of China.Glob Change Biol, 25(2): 733–743

[76] Wang Z, Liu K, Cao J, Peng L, Wen X (2022). Annual change analysis of mangrove forests in China during 1986–2021 based on Google Earth engine.Forests, 13(9): 1489

[77] Xia P, Meng X W, Feng A P, Li Z, Yang G (2015). Sediment compaction rates in mangrove swamps of Guangxi and its mangrove migration response to sea-level rise.Acta Sediment Sin, 33(3): 551–560

[78] Xiong Y, Dai Z, Long C, Liang X, Lou Y, Mei X, Nguyen B, Cheng J (2024). Machine Learning-Based examination of recent mangrove forest changes in the western Irrawaddy River Delta, Southeast Asia.Catena, 234: 107601

[79] Xu H Q (2005). A study on information extraction of water body with the modified normalized difference water index (MNDWI).Nation Remote Sens Bull, 9(5): 589–595

[80] Yang J Y, Luo F S, Wang A J, Yu D S (2020). Comprehensive evaluation for silted bay restoration: a case study in Xiamen Bay.J App Oceanograph, 39(3): 389–399

[81] Yang X, Li S, Xu S, Yu C, Pan J (2023). Variations in water and sediments of the Nanliu River flowing into the sea under the influence of extreme weather in the past 60 years.J Tropical Oceanograph, 42(4): 91–103

[82] Yoshikai M, Nakamura T, Bautista D M, Herrera E C, Baloloy A, Suwa R, Basina R, Primavera-Tirol Y H, Blanco A C, Nadaoka K (2022). Field measurement and prediction of drag in a planted Rhizophora mangrove forest.J Geophys Res: Oceans, 127(11): e2021JC018320

[83] Yue W, Li C T, Lin Y Y, Feng T Q, Wang L R (2023). History and prospect on ecological restoration of mangroves on Qi’ao Island, Zhuhai.J Guangdong Ocean Univ, 43(2): 135–140

[84] Zha Y, Gao J, Ni S (2003). Use of normalized difference built-up index in automatically mapping urban areas from TM imagery.Int J Remote Sens, 24(3): 583–594

[85] Zhang W, Chen Z H, Wang J K (2015). Monitoring the areal variation of mangrove in Beibu Gulf coast of Guangxi China with remote sensing data.J Guangxi U (Nat Sci Ed), 40(6): 1570–1576

[86] Zhang Z, Ahmed M R, Zhang Q, Li Y, Li Y (2023). Monitoring of 35-year mangrove wetland change dynamics and agents in the sundarbans using temporal consistency checking.Remote Sens (Basel), 15(3): 625

[87] Zhao C, Qin C Z, Wang Z, Mao D, Wang Y, Jia M (2022). Decision surface optimization in mapping exotic mangrove species (Sonneratia apetala) across latitudinal coastal areas of China.ISPRS J Photogramm Remote Sens, 193: 269–283

[88] Zhou X, Dai Z, Carniello L, Long C, Wang R, Luo J, Huang Z (2022). Linkage between mangrove wetland dynamics and wave attenuation during a storm–A case study of the Nanliu Delta, China.Mar Geol, 454: 106946

[89] Zhou Z, Ye Q, Coco G (2016). A one-dimensional biomorphodynamic model of tidal flats: sediment sorting, marsh distribution, and carbon accumulation under sea level rise.Adv Water Resour, 93: 288–302

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