Succession of aquatic macrophytes in the Modern Yellow River Delta after 150 years of alluviation
Succession of aquatic macrophytes in the Modern Yellow River Delta after 150 years of alluviation
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DOI：
10.1007/s11273-013-9297-3
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发表时间：
2013-04
影响因子：
1.8
通讯作者：
Feng Li;Yonghong Xie;Xin-sheng Chen;Z. Hou;Xu Li;Z. Deng;Yinyin Liu;Jia-yu Hu;Na Liu
中科院分区：
文献类型：
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作者：
Feng Li;Yonghong Xie;Xin-sheng Chen;Z. Hou;Xu Li;Z. Deng;Yinyin Liu;Jia-yu Hu;Na Liu
研究了现代黄河三角洲150年冲积后水生大型植物的演替过程，确定了各种环境参数对植被演替的调节作用。2007 - 2008年共调查了214个样方，测量了19个环境参数，包括海拔、样方距海岸、10个水参数和7个土壤参数。整个三角洲共鉴定出46种水生植物，隶属于20科34属。水生植物和淹没植物是最常见的物种，分别占所有物种的58.7%和34.8%。非趋势正则对应分析表明，该三角洲水生植物的存在主要受水体盐度、土壤盐度和离海岸距离的影响，其次是营养物浓度（如NH4+、土壤总氮和水体PO4−）的影响。耐盐碱物种（例如，海苔、芦苇和叶霉）倾向于广泛分布于整个三角洲。而对盐度敏感的物种（如角藻、水螅和马来斑藻）则倾向于分布在演替早期离海岸相对较远的地区。此外，本研究还证实了物种丰富度和多样性与水和土壤盐度呈负相关，而水和土壤盐度又与样地离岸距离呈负相关。这些数据表明，该三角洲水生植物演替的主要驱动因素是水和土壤盐度。本文所收集的资料可用于提出黄河三角洲水生植物保护的管理措施。
This study evaluated the succession process of aquatic macrophytes after 150 years of alluviation in the Modern Yellow River Delta, China, and identified the roles of various environmental parameters that regulate vegetation succession. From 2007 to 2008, 214 quadrats were surveyed and 19 environmental parameters were measured, including elevation, plot distance from the seashore, 10 water parameters, and 7 soil parameters. Forty-six aquatic macrophytes belonging to 20 families and 34 genera were identified across the entire delta. Emergent and submerged plants were the most frequent species, accounting for 58.7 and 34.8 % of all species, respectively. Detrended canonical correspondence analysis showed that the presence of aquatic macrophytes in this delta was primarily regulated by water salinity, soil salinity, and distance from the seashore, followed by nutrient concentrations (e.g., NH4+, total soil N and PO4−of water). Salinity-tolerant species (e.g.,Ruppia maritima,Phragmites australis, andTypha angustifolia) tended to be widely distributed across the entire delta. In contrast, salinity-sensitive species (e.g.,Ceratophyllum demersum,Hydrilla verticillata, andPotamogeton malaianus) tended to be distributed in areas at the early stages of succession, which were relatively distant from the shore. Moreover, this study also confirmed that species richness and diversity were negatively correlated with water and soil salinity, which in turn were negatively correlated with plot distance from the shore. These data indicate that the primary drivers of aquatic macrophyte succession in this delta are water and soil salinity. The information assimilated here is used to propose management practices for the protection of aquatic macrophytes in the Yellow River Delta.