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为探索山区火电厂对周边林地植物群落及土壤碳、氮、磷的影响,调查了贵州省黔北火电厂周边7个样方乔木层和灌木层的物种群落情况,并研究了所在样方林中、林缘与林外耕地表层土壤中全氮、碱解氮及有机质情况。结果表明:研究区域自然林地乔木树种主要以马尾松、侧柏、柳杉、喜树、青冈为主;灌木主要以悬钩子、荚蒾、野花椒、崖豆藤、火棘等为主;草本植物则主要以肾蕨、茅草、蒿类植物为主。黔北发电厂周边林地土壤肥力水平较高,土壤全氮、碱解氮及有机质土壤肥力等级均为Ⅰ级,全磷是土壤养分的主要限制因子。土壤碳、氮、磷及其化学计量特征之间表现为不同的相关性,全氮与全磷具有相反的同源相关性。林地土壤中全氮、碱解氮及有机质主要受到坡度、土壤质地、植物群落结构与补给的影响。
In order to explore the impact of mountainous thermal power plant on the plant community and soil carbon, nitrogen and phosphorus in the surrounding woodland, the species composition of seven quadrats in the arbor and shrub layer around Guizhou North Thermal Power Plant was investigated. Middle and Arborvitae Forest and Forest Land Surface Soil Total Nitrogen, Nitrogen and Organic Matter. The results showed that the main tree species of natural forest in the study area were Pinus massoniana, Platycladus orientalis, Cryptomeria fortunei, Camptotheca acuminata and Cyclobalanopsis glauca. The shrubs were mainly Rubus, Viburnum, wild pricklyash, Plants are mainly fern, grass, artemisia plants based. The soil fertility level of forest land around Qianbei Power Plant is relatively high. Soil total N, available N and soil organic matter are Grade I, and total phosphorus is the main limiting factor of soil nutrient. Soil carbon, nitrogen, phosphorus and their stoichiometric characteristics showed a different correlation, total nitrogen and total phosphorus with the opposite homologous correlation. Soil total nitrogen, available nitrogen and organic matter in forest soil were mainly affected by slope, soil texture, plant community structure and supply.