ZHANG Zhenming,HUANG Dongfu,ZHANG Jiachun,et al.The Distribution Characteristic of Soil Carbon,Nitrogen and Phosphorus for Abies fanjingshanensis and Davidia involucrata[J].Northern Horticulture,2016,40(06):163-168.[doi:10.11937/bfyy.201606042]
梵净山冷杉与珙桐产地土壤碳、氮、磷分布特征
- Title:
- The Distribution Characteristic of Soil Carbon,Nitrogen and Phosphorus for Abies fanjingshanensis and Davidia involucrata
- 文献标志码:
- A
- 摘要:
- 为探究梵净山冷杉和珙桐土壤中碳、氮、磷含量的丰缺现状及主要限制因子,促进梵净山冷杉与珙桐的立地研究保护与旅游开发的协调发展,通过对梵净山冷杉与珙桐产地土壤的碳、氮、磷的含量与相关性进行了研究,并与其它区域冷杉和珙桐土壤养分进行对比研究。结果表明:梵净山冷杉土壤养分含量要高于珙桐产地土壤含量,梵净山冷杉土壤有机碳平均含量大于珙桐土壤有机碳,珙桐碱解氮含量(672.14 mg/kg)>冷杉土壤碱解氮含量(164.02 mg/kg), 梵净山冷杉全氮、全磷、有效磷平均含量分别为2.24 g/kg、1.14 g/kg、13.13 mg/kg;珙桐全氮、全磷、有效磷平均含量分别为14.59 g/kg、0.09 g/kg、27.39 mg/kg,2种珍稀植物土壤养分都能为珍稀植物生长提供良好的养分条件。梵净山冷杉土壤碳、氮、磷含量要高于急尖长苞冷杉、百山祖冷杉、臭冷杉、岷江冷杉,有效磷是梵净山冷杉种群生长的障碍性因子,甚至是限制性因子。梵净山珙桐土壤碳、氮、磷含量为中等,土壤有机碳含量为珙桐种群生长的限制性因子,梵净山珍稀植物林下土壤全氮与有机碳含量呈极显著正相关,土壤全磷与有机碳含量呈极显著负相关,全氮与有机碳具有显著的相同来源,全磷与全氮则具有相反的来源。
- Abstract:
- The content of soil carbon(C),nitrogen(N),phosphorus(P) of Abies fanjingshanensis and Davidia involucrata and the relationship between soil and Abies fanjingshanensis and Davidia involucrata in Fanjing Mountain was studied,and compared the contents in Fanjing Mountain with that in other areas,to explore situation and major limiting factor of soil nutrient,to promote the coordinate development between the rare plant and tourism development.The results showed that the soil nutrient content of Abies fanjingshanensis was higher than that of Davidia involucrata.The average content of soil organic carbon(SOC) of Abies fanjingshanensis was considerably larger than that of Davidia involucrata. The content of soil alkali-hydrolyzable N of Davidia involucrata was 672.14 mg/kg,it was higher than that of Abies fanjingshanensis,which was 164.02 mg/kg.The average content of total N (STN),P (STP) and available P of Abies fanjingshanensis were 2.24 g/kg,1.14 g/kg,13.13 mg/kg,respectively,and that of Davidia involucrata were 14.59 g/kg, 0.09 g/kg,27.39 mg/kg,respectively.The soil nutrient could provide the favorable growing conditions for the two rare plants.The content of soil C,N,P of Abies fanjingshanensis was higher than that of Abies georgei,Abies beshanzuensis,Abies nephrolepis and Abies faxoniana.The available P was obstacle fator,even limited fator of polulation growing for Abies fanjingshanensis.The content of soil C,N,P for Davidia involucrata was on morderate level,and the limited fator of polulation growing for Davidia involucrata was SOC.The STN was significantly correlated with the SOC for the two rare plants in Fanjing mountain,but the STP was significantly negatively correlated with the SOC.The STN and SOC had the significant same source,but the STN and STP had the opposite source.
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备注/Memo
第一作者简介:张珍明(1986-),男,博士,助理研究员,现主要从事土壤化学与生态学等研究工作。E-mail:zhang6653579@163.com.责任作者:张玉武(1962-),男,硕士,副研究员,现主要从事森林生态学与植物学等研究工作。E-mail:yuwuzhang2005@sina.com.基金项目:贵州省社发攻关资助项目(黔科合SY[2013]3152号);贵州省省院合作资助项目(黔科合院地合[2013]7002);贵州省科技厅社发攻关资助项目(黔科合SY字[2013]3157号);贵州省科技厅国际省校区域合作协议资助项目(黔科合省院合[2014]7002号);贵州省基金资助项目(黔科合SY字[2012]2244)。