期刊论文

Spatial and Temporal Variability of Soil Organic Matter and Total Nitrogen and Influencing Factors in Chenzhou Tobacco-growing Area, Hunan Province

中文

土壤通报

0564-3945

2020

51

03

686-693

10.19336/j.cnki.trtb.2020.03.25

yl201901:四川中烟工业有限责任公司项目 XX16-18Aa02:湖南省烟草公司项目

本校为第一机构

为了探明湖南省郴州烟区土壤有机质和全氮的时空变化规律,从而为烟田有机物料投入和氮素养分管理提供科学依据,采用地统计学技术和地理信息技术相结合的方法,对该区2000年和2015年植烟土壤有机质和全氮时间和空间变异特征进行了研究。结果表明,2个年份有机质和全氮含量均十分丰富,2015年土壤有机质(SOM)和全氮(TN)平均含量较2000年分别增加了2.59 g kg^-1和0.04 g kg^-1,变异系数基本稳定,极差变大,Moran’s I下降,SOM块金效应基本稳定,TN块金效应显著增加;有机质\"适宜\"和\"高\"等级面积分别下降了12.07%和17.16%\",极高\"等级面积增加了29.47%;两个年份全氮含量\"适宜\"及以下的等级均缺失,2...

Based on the methods of GIS and geo-statistics, temporal and spatial variation characteristics of soil organic matter (SOM) and total nitrogen (TN) from 2000 to 2015 in tobacco-planting area of Chenzhou were studied. The results showed that the contents of SOM and TN were very rich in the two years. The mean value of SOM and TN increased by 2.59 g kg~(-1) and 0.04 g kg~(-1) in 2015 compared with 2000. The coefficient of variation was basically stable, the range became larger, Moran's I decreased, the lump gold effect of SOM was basically stable, and the lump gold effect of TN increased signifi...