吉林省辽河河岸植被缓冲带土壤氮、磷分布规律研究  

Study on the Nitrogen and Phosphorus Distribution Law in the Soil in Riparian Vegetation Buffer Zone of Liaohe River in Jilin Province

作　　者：王梓默 付世萃[2] 朱红波[2] 林士杰[1] 李泽刚 张大伟[1] WANG Zimo;FU Shicui;ZHU Hongbo;LIN Shijie;LI Zegang;ZHANG Dawei(Jilin Provincial Academy of Forestry Sciences,Changchun 130033,China;Institute of Forest Inventory and Planning of Jilin Province,Changchun 130022,China;Forestry and Grassland Bureau of Da an City,Baicheng 131300,China)

机构地区：[1]吉林省林业科学研究院,吉林长春130033 [2]吉林省林业调查规划院,吉林长春130022 [3]大安市林业和草原局,吉林白城131300

出　　处：《吉林林业科技》2022年第3期13-20,共8页Journal of Jilin Forestry Science and Technology

基　　金：吉林省财政厅项目(GY-2019-10)。

摘　　要：采用野外调查与室内分析相结合的方法,对吉林省辽河河岸缓冲带不同植被类型、与河岸不同距离、不同深度土壤的氮、磷含量进行了测定与分析,探讨距离河岸100 m范围内植被缓冲带土壤pH及氮、磷的分布规律。结果表明:植被类型对土壤全氮含量的影响主要集中在0~40 cm土层深度,随土层加深影响逐渐减弱,在0~20 cm土层深度,针阔混交林土壤全氮含量最高,在20~40 cm土层深度,针阔混交林与农田土壤全氮含量最高。在紧邻河岸处,农田土壤全氮含量最高;在距河岸25 m处,针阔混交林与农田土壤全氮含量相对较高;在距河岸50 m处与100 m处,农田土壤全氮含量最高。全磷含量在0~20 cm土层深度,阔叶林土壤最高;在20~60 cm土层深度,针阔混交林与农田土壤最高。在紧邻河岸处,农田土壤全磷含量最高;在距河岸25 m处,针阔混交林与农田土壤全磷含量相对较高;在距河岸50 m处与100 m处,农田土壤全磷含量最高。不同植被下土壤均呈中性或微碱性,土壤pH在0~20 cm土层深度,阔叶林最高;在20~60 cm土层深度,农田与阔叶林最高。对不同植被类型土壤pH与氮、磷含量进行聚类分析,共分成7类,其中第Ⅳ类与第Ⅶ类土壤储存氮、磷的能力相对较强,且二者土壤pH较低,植被分布规律相似,均表现为草地主要分布于距河岸0~50 m处,主要草本植物包括马齿苋、接骨草、羊草等,距河岸50~100 m范围主要为灌木林与阔叶林,距河岸100 m处主要为针阔混交林,主要树种包括紫穗槐、兴安落叶松、山杨、榆等。The soil in riparian vegetation buffer zone of Liaohe River in Jilin Province was the research object.The nitrogen and phosphorus contents in the soil with different vegetation types,different distances from the river bank and different depths were measured and analyzed with the method of combining field investigation and indoor analysis to discuss the distribution law of pH,nitrogen and phosphorus in the soil in the vegetation buffer zone within 100 m from the river bank.The results showed that the influence of the vegetation type on total nitrogen content in the soil was great with the soil layer depth of 0-40 cm,and the influence gradually weakened with the deepening of the soil layer.With the soil layer depth of 0-20 cm,total nitrogen content in the soil of the coniferous and broad-leaved mixed forest was the highest.With the soil layer depth of 20-40 cm,the contents in the soil of the coniferous and broad-leaved mixed forest and the farmland were the highest.Close to the river bank,the content in the soil of the farmland was the highest.At 25 m from the river bank,the contents in the soil of the coniferous and broad-leaved mixed forest and the farmland were relatively high.At 50 m and 100 m from the river bank,the contents in the soil of the farmland were the highest.With the soil layer depth of 0-20 cm,total phosphorous content in the soil of the broad-leaved forest was the highest.With the soil layer depth of 20-60 cm,the contents in the soil of the coniferous and broad-leaved mixed forest and the farmland was the highest.Close to the river bank,the content in the soil of the farmland was the highest.At 25 m from the river bank,the contents in the soil of the coniferous and broad-leaved mixed forest and the farmland were relatively high.At 50 m and 100 m from the river bank,the contents in the soil of the farmland were the highest.The soils under different vegetations were all neutral or slightly alkaline.With the soil layer depth of 0-20 cm,the soil pH of the broad-leaved forest was the highest.With the s

关 键 词：吉林省辽河 河岸植被缓冲带土壤 氮 磷 分布规律 

分 类 号：S153.6[农业科学—土壤学]