Frontiers in plant science · 2026
Soil microbial biomass in tropical coastal shelterbelts of Hainan Island: seasonal characteristics and responses to environmental factors.
СтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Chen Haihui, Lin Zhipan, Tian Leyu, Chen Yiqing, Chen Zongzhu, Liang Juzhi, Lei Xiangling, Su Shaofeng, Nong Shouqian
Аннотация
INTRODUCTION: Soil microorganisms regulate plant nutrition through nutrient transformation, and forest soil microbial biomass is crucial for ecosystem health and nutrient cycling. Tropical coastal shelterbelts are essential for coastal ecological security, but seasonal microbial biomass variation and environmental controls in forests remain insufficiently understood.
METHODS: To determine how soil microbial biomass changes seasonally in tropical coastal shelterbelts and which environmental factors regulate this variation, four representative shelterbelt types in Wenchang, Hainan, were examined: secondary forest (SF), mixed forest, Cocos nucifera forest, and Casuarina equisetifolia forest. The differences in soil microbial biomass characteristics between wet and dry seasons were compared. Correlation analysis and redundancy analysis (RDA) were adopted as core analytical approaches to identify associations between environmental factors and microbial biomass. Exploratory structural equation modeling was performed as supplementary analysis to visualize potential regulatory pathways.
RESULTS: During both seasons, SF exhibited significantly higher microbial biomass phosphorus, microbial biomass nitrogen, and microbial biomass carbon than the other forest types. From the dry to wet season, microbial entropy, microbial biomass stoichiometric ratios, and microbial biomass levels increased across all forest stands. The direction of the associations between microbial biomass, its stoichiometric ratios, and environmental factors was generally consistent between seasons, whereas the strength of these associations varied seasonally. RDA identified soil total phosphorus, available phosphorus (AP), and precipitation (PRCP) as the main factors associated with variations in microbial biomass levels and their elemental stoichiometric ratios. Their dominant roles were not altered by seasonal transition. Exploratory supplementary analysis further supported the seasonal reconfiguration of environmental regulatory pathways.
DISCUSSION: These findings demonstrate the stand- and season-specific patterns of soil microbial biomass in tropical coastal shelterbelts and clarify how the responses of microbial biomass to environmental factors are reshaped by seasonal precipitation variations.
METHODS: To determine how soil microbial biomass changes seasonally in tropical coastal shelterbelts and which environmental factors regulate this variation, four representative shelterbelt types in Wenchang, Hainan, were examined: secondary forest (SF), mixed forest, Cocos nucifera forest, and Casuarina equisetifolia forest. The differences in soil microbial biomass characteristics between wet and dry seasons were compared. Correlation analysis and redundancy analysis (RDA) were adopted as core analytical approaches to identify associations between environmental factors and microbial biomass. Exploratory structural equation modeling was performed as supplementary analysis to visualize potential regulatory pathways.
RESULTS: During both seasons, SF exhibited significantly higher microbial biomass phosphorus, microbial biomass nitrogen, and microbial biomass carbon than the other forest types. From the dry to wet season, microbial entropy, microbial biomass stoichiometric ratios, and microbial biomass levels increased across all forest stands. The direction of the associations between microbial biomass, its stoichiometric ratios, and environmental factors was generally consistent between seasons, whereas the strength of these associations varied seasonally. RDA identified soil total phosphorus, available phosphorus (AP), and precipitation (PRCP) as the main factors associated with variations in microbial biomass levels and their elemental stoichiometric ratios. Their dominant roles were not altered by seasonal transition. Exploratory supplementary analysis further supported the seasonal reconfiguration of environmental regulatory pathways.
DISCUSSION: These findings demonstrate the stand- and season-specific patterns of soil microbial biomass in tropical coastal shelterbelts and clarify how the responses of microbial biomass to environmental factors are reshaped by seasonal precipitation variations.