Characteristics of Brasenia schreberi Community and Its Relationship with Water Environmental Factors in Alpine Wetland of Southern Hunan
A field investigation of Brasenia schreberi in the high-altitude wetlands of southern Hunan was conducted in the Mangshan National Nature Reserve,Yizhang County,Chenzhou City,and the Wild Brasenia Habitat Protection Area of Shangdong Village,Guidong County.The study analyzed the characteristics of wild Brasenia communities,their diversity,and the relationship between community characteristics and water environmental factors,aiming to identify the key water environmental factors influencing the characteristics of wild Brasenia communities.The results indicated that the associated species in the three protection areas,Mangshan Museum,Langpan Lake in Mangshan,and Shangdong Village in Guidong were relatively few,with dominant species including Alisma orientale,Scirpus triqueter,Nymphaea tetragona,and Caldesia grandis.The diversity index of cultivated Brasenia communities in the Mangshan Museum was lower than that of wild Brasenia communities.Nitrogen content in the water was identified as the primary factor influencing the characteristics and community diversity level of Brasenia.During the introduction and restoration of Brasenia,attention should be paid to nitrogen content,water temperature,and conductivity.These findings provide insight into the adaptive mechanisms between Brasenia and its environment and offer a reference for the introduction,expansion,and habitat restoration of Brasenia.
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