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当前位置: 首页 > 文章 > 郑州地区草地土壤水分时空变化特征及对气候的响应分析 湖南农业科学 2013 (19) 93-95
Position: Home > Articles > Spatial and Temporal Variation Characteristics of Grassland Soil Moisture in Zhengzhou Area and Its Response to Climate Hunan Agricultural Sciences 2013 (19) 93-95

郑州地区草地土壤水分时空变化特征及对气候的响应分析

作  者：
彭记永;方文松
单  位：
河南省气象科学研究所;中国气象局农业气象保障与应用技术重点开放实验室
关键词：
草地土壤;水分时空变化;气候;响应;回归分析;郑州
摘  要：
在郑州地区进行了8 a的土壤水分定位观测,运用数理统计方法,分析了土壤水分的时空变化特征及其对气候的响应关系。结果表明:(1)土壤水分呈现以年为周期的变化规律,每年5、6月份达到极小值。(2)在土壤垂直方向上,水分变化可以划分为4个层次:表层,急变层,缓变层,相对稳定层。(3)土壤水分与气候(降水量和气温)呈显著相关关系,复相关系数随着深度的增加,呈现先减小后增加的趋势,0~10 cm土层的复相关系数达到最大值(R=0.770),可见降水量和气温是影响郑州地区土壤水分变化的主要气候因素。
译  名：
Spatial and Temporal Variation Characteristics of Grassland Soil Moisture in Zhengzhou Area and Its Response to Climate
作  者：
PENG Ji-yong;FANG Wen-song;Henan Institute of Meteorological Science;Key Laboratory of Agrometeorological Services and Applied Technique, China Meteorological Administration;
关键词：
grassland soil;;spatial and temporal variation of moisture;;climate;;response;;regression analysis;;Zhengzhou
摘  要：
An eight-year soil moisture fixed observation had been conducted in Zhengzhou area, and temporal and spatial variation characteristics of soil moisture and its response to climate were analyzed by mathematical statistics methods. The results showed that:(1) Soil moisture varied on 1-year cycle and reached its minimum in May or June every year.(2) In the vertical direction, variation of soil moisture can be divided into four layers, including upper soil layer, blast layer, buffer layer and relatively stable layer.(3) There was a significant relationship between soil moisture and climate(precipitation and air temperature). The multiple correlation coefficient decreased at first and then increased with the increasing depth, and it reached the maximum at 0~10 cm soil layer(R=0.770). Therefore, precipitation and temperature were the main climate factors which affected the variations of soil moisture in Zhengzhou area.

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