摘要
选择艾比湖湿地的博尔塔拉河、精河下游河岸带为研究区域,针对土壤中的碱解氮进行定量测定,采用描述性统计法、地统计学方法和空间分析法,讨论研究区土壤碱解氮的空间变异及分布特征。结果表明：在0~20、20~40和60~80 cm土层碱解氮含量的块金值与基台值之比分别为47.60%、49.98%和58.21%,具有中等的空间相关性。在40~60 cm和80~100 cm土层块金值与基台值之比分别为3.64%和22.69%,具有较强的空间相关性。研究区0~100 cm各层土壤碱解氮含量平均值分别为49.16、37.26、30.22、20.35和17.80 mg/kg,经统计分析15~20 mg/kg的样本频数最多,表明研究区碱解氮含量整体偏低,属于极缺乏性。土壤碱解氮垂直分异规律为：随土层深度的增加而递减;碱解氮含量水平分异规律为：博河区域〉精河及精河东部区域〉博、精河间的中部区域。
In this paper, the riparian zone of Bortala River and Jinghe River of Ebinur Lake wetland was selected as a study area, soil available N content was measured and the spatial variation and distribution characteristics of soil available N in the study area were discussed by the method of descriptive statistics, statistical methods and spatial analysis. The results showed that： the spatial correlation of soil available N in the depths 0-20cm, 20-40cm and 60-80cm were moderately dependent, with the Nugget/Sill of 47.60%,, 49.98% and 58.21%, respectively; soil available N in the depths of 40-60cm and 80-100cm were highly dependent, with the Nugget/Sill of 3.64% and 22.69%, respectively; within the range of 0-100cm soil depth, the average value of soil available N in each layer （0-20cm, 20-40cm, 40-60cm, 60-80cm and 80-100cm） were 49.16 mg/kg, 37.26 mg/kg, 30.22 mg/kg, 20.35 mg/kg and 17.80 mg/kg, respectively; the frequency of soil available N content in study area mostly ranged between 15-20 mg/kg, which showed the overall level of soil available N content was low, belonging to extremely deficient level; soil available N decreased with the increase of soil depth. Horizontal distribution rules of soil available N content was： Bortala River 〉 Jinghe River and eastern region of Jinghe River 〉 central area between Bortala and Jinghe Rivers.
出处
《土壤》
CAS
CSCD
北大核心
2014年第5期819-824,共6页
Soils
基金
国家自然科学基金项目(41171036)
国家自然科学基金重点项目新疆联合基金项目(U1138302)
新疆师范大学地理学博士点支撑学科项目(XJNU-DL-201411)资助
关键词
艾比湖
湿地
碱解氮
空间变异
Ebinur lake, Wetland, Available N, Spatial variability
作者简介
艾尤尔·亥热提（1990-），男（维吾尔族），新疆阿克苏人，硕士研究生，研究方向为干旱区湖泊环境与资源。E-mail：gheyur@163．com
通讯作者（hyimit@yahoo．com．cn）
