石灰岩区宜林荒山春季土壤含水率预测  

Forecast of Soil Water Content in Spring for Carcareous Mountains Suitable Suitable for Afforestation

作　　者：吕赞韶[1] 曹雅宁[1] 奥小平[1] 沈佐 何力春 

机构地区：[1]山西省林业科学研究所,林业部科技司,山西省林业厅

出　　处：《北京林业大学学报》1994年第3期106-111,共6页Journal of Beijing Forestry University

摘　　要：该文利用４年的实地观测资料，进行了石灰岩区宜林荒山春季土壤含水率预测研究。采用逐步回归方法，按隔候、隔旬两个预期间隔期，建立了阳坡、半阳坡、阴坡３个坡向，５、２０ｃｍ两个土层的预测模型，平均精度９４．８％。为了解决预测间隔期内产生降水对预测结果的影响，提出了用更正系数和降水量计算更正值的方法，对预测值进行更正．Using data from observation materials collected over a four year period thispaper discusses the forecast of soil water content in spring for waste mountains on carcareoushilly land. By stepwise regression,the forescast equations are established in three slopes(south-facing slope ,semi-south-facing slope,north-facing slope)and two soil depthes(5cm,20cm)on the basis of two different intervals(five days and ten days).The average precision ofthe equations was 94.8%。In order to eliminate the effect of rainfalls on the forecast resultswithin the intervals,the redressing value of every equation was calculated by means of precip-itation and the redressing coefficient. There was little difference between the precision offorecast methods in accordance with two intervals.

关 键 词：石灰岩 宜林荒山 土壤含水量 

分 类 号：S714[农业科学—林学]