摘要
通过对北江流域森林土壤采样,对其174个土壤样点进行研究,对土壤样点分层采样与测定含量,分析土壤氮养分指标,运用Arc GIS技术与地统计分析等方法进一步揭示土壤氮的空间分布特征。统计分析与空间制图结果显示,4个土壤层(D1~D4,0~80 cm)氮含量的平均值分别为1070.492 g/kg、855.457 g/kg、763.956 g/kg、709.222 g/kg;D1~D4土壤层随土壤深度的增加,氮含量整体降低,每个土壤层的空间变异性逐渐减小。
Through the forest soil sampling in Beijiang River basin,174 soil sample points were studied,the soil sample points were stratified sampled and the content was measured,the soil nitrogen nutrient index was analyzed,and the spatial distribution characteristics of soil nitrogen were further revealed by using Arc GIS technology and geostatistical analysis.The results of statistical analysis and spatial mapping showed that the average nitrogen content of four soil layers(D1-D4)was 1070.492 g/kg,855.457 g/kg,763.956 g/kg and 709.222 g/kg,respectively;With the increase of soil depth,the nitrogen content in D1-D4 soil layer decreases as a whole,and the spatial variability of each soil layer decreases gradually.
作者
邓泽伟
康剑
孙冬晓
邓景月
张耕
李莹莹
丁晓纲
DENG Zewei;KANG Jian;SUN Dongxiao;DENG Jingyue;ZHANG Geng;LI Yingying;DING Xiaogang(Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou,Guangdong 510520,China;South China Botanical Garden,Chinese Academy of Sciences,Guangzhou,Guangdong 510650)
出处
《林业与环境科学》
2022年第4期65-69,共5页
Forestry and Environmental Science
基金
广东省生态林业建设项目“林地土壤调查”
广东省科技计划项目(2019-07)。
关键词
森林土壤
氮
空间分布
北江流域
forest soil
nitrogen
spatial distribution
Beijiang River Basin
