摘要
该文对北京通州区辖800多km2范围内3022点的土壤墒情测量数据进行了统计分析,验证了土壤墒情符合对数正态分布,给出了计算类似区域合理取样数目时的估值方法,目的是以合理的取样数目和适合的取样方法指导区域性墒情(旱情)监测站点的建设。同样,以北京昌平一个农场的墒情分布,给出了计算类似地块合理取样数目时的估值方法,以此来指导节水灌溉。
A statistical analysis about the distribution of soil water content was made based on the 3022 measured data sampled from the area around 800 km^2 at Tongzhou district of Beijing. The results showed that the soil water content followed the logarithmic normal distribution, so an estimated method was also put forward to predict the reasonable number of sampling in a similar region. The study results will be applied to indicate scientifically how and how many monitoring stations of soil water content are set up. The experimental and theoretical analysis from another region at Changping district of Beijing also verified above results.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2004年第4期74-78,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家高技术研究发展计划(863计划)重大专项课题"作物水分信息采集与精量控制用水技术研究与开发"(2002AA6Z3071)
关键词
旱情
墒情
区域土壤水分测量
地统计分析
drought
soil moisture
regional soil moisture measurement
geology-statistical analysis
