汤河流域植物生存域研究  

Study on Plant Survival Regions in Tanghe River Basin

作　　者：梁婉如 宁立波[1] 豆靖涛 郭玉娟 张冬冬 李昂 LIANG Wanru;NING Libo;DOU Jingtao;GUO Yujuan;ZHANG Dongdong;LI Ang(School of Environmental Studies,China University of Geoscience,Wuhan 430074,China;Natural Resources Monitoring and Land Consolidation Institute in Henan Province,Zhengzhou 450053,China;Key Laboratory of Geological Environmental Protection in Henan,Zhengzhou 450016,China)

机构地区：[1]中国地质大学(武汉)环境学院,武汉430074 [2]河南省自然资源监测和国土整治院,郑州450053 [3]河南省地质环境保护重点实验室,郑州450016

出　　处：《水土保持研究》2023年第1期312-318,326,共8页Research of Soil and Water Conservation

基　　金：国家自然科学基金(4177020517);河南省自然资源厅科技创新项目(2020046364)。

摘　　要：探讨汤河流域植物生存域特征,可为地境再造技术在流域生态修复中的应用提供科学依据。该研究以多年生植物为研究对象,将土壤水分、盐分、有机质、氮磷钾等生态因子作为限制性因子研究了优势种的生存域,明晰了流域优势种适生的因子空间。结果表明:(1)杨树生存域范围包含构树,构树包含楝树。杨树作为优势度最高的优势种在研究区分布极为广泛,而构树、楝树则相对受限,有更高的集群度。黄荆与酸枣的生存域范围呈现出相交关系,黄荆易于受到水分胁迫,此即为黄荆多集中分布于土壤较为贫瘠的生境而酸枣分布更为广泛的主要原因;(2)杨树、构树、楝树共生的生存域适宜范围为含水率0.53%~13.73%,含盐量0.24~0.85 g/kg,有机质含量1.63~5.94 g/kg,土壤氮磷钾综合指数0.38~1.25。黄荆与酸枣共生的生存域适宜范围为含水率8.64%~15.80%,含盐量0.21~0.77 g/kg,有机质含量3.83~17.08 g/kg,土壤氮磷钾综合指数0.51~2.43。综合以上研究结果,可为改造地境水肥条件,增加植物群落物种多样性提供参考。Exploring the plant survival regions in Tanghe River Basin can provide scientific basis for below-ground habitat reconstruction technology in the ecological restoration of the basin. Perennial plants were selected as the research objects, and ecological factors such as soil moisture, salinity, organic matter, nitrogen, phosphorus and potassium were taken as limiting factors to study dominant species survival regions figures, and to clarify the suitable factor space of the dominant species in the basin. The results showed that:(1) the range of Populus L. survival region contained Broussonetia papyrifera and Broussonetia papyrifera contained Melia azedarach L., Populus L. was the most dominant species with the highest dominance, and widely distributed in the study area, while the distribution of Broussonetia papyrifera and Melia azedarach L. were relatively limited and highly clustered;the survival domain range of Vitex negundo L. and Ziziphus jujuba showed that the relationship of intersecting. Vitex negundo L. was susceptible to water stress, which was the main reason why Vitex negundo L. was mainly distributed in poor soil habitats and Ziziphus jujuba distributed more widely;(2) the suitable range of the survival domain for the symbiosis of Populus L., Broussonetia papyrifera and Melia azedarach L. was 0.53%~13.73% of the variation in water content, 0.24~0.85 g/kg of the variation in salt content, 1.63 ~5.94 g/kg of the variation in organic matter content and 0.38~1.25 of the variation in combined soil NPK index;the suitable range of the survival domain for the symbiosis of Vitex negundo L. and Ziziphus jujuba was 8.64%~15.80% of the variation in water content, 0.21~0.77 g/kg of the variation in salt content, 3.83~17.08 g/kg of the variation in organic matter content and 0.51~2.43 of the variation in combined soil NPK index. In conclusion, these research results could provide support for improving the water and fertility conditions in the underground habitat and increasing the diversity of plant community specie

关 键 词：生存域 优势种 汤河流域 

分 类 号：S154.4[农业科学—土壤学]