内蒙古典型草原羊草生长高度研究

通过对内蒙古典型草原羊草的试验研究,得出羊草的旬生长高度与旬平均气温、旬降水量和土壤含水量相关密切,5～8月牧草每旬的生长高度与前一旬生长高度相关系数达0.964,羊草的生长符合线性生长规律。由于羊草在生长后期受到自身生长节律的影响,符合Logistic生长曲线的特征。在研究中建立了多元线性回归模型和Logistic生长曲线模型,并建立了生长高度预测模型。经拟合检验效果较好,预测模型能在一定精度水平上准确地预测羊草的生长高度。

Study on the Growth Height of Leymus chinensis in Inner Mongolia Grassland

Leymus chinensis in the Inner Mongolia grassland was studied , the result indicated that, Leymus chinensis growth in a ten-day period was correlated closely with a ten-day period average temperature, a ten-day period precipitation and capacity of the soil moisture. The correlation coefficient of Leymus chinensis growth height in ten-day period with previous ten-day period was 0.964 from May to August, the growth of Leymus chinensis accord with the linear growth rule. Due to own growing rhythm of the Leymus chinensis in later period , the growth of Leymus chinensis conformed to the logistic growth curve. Therefore the multi-dimensional linear regression modeling and the logistic growth modeling were established , and established growth height forecast modeling was established, which was good by inspection, and forecast modeling could forecast growth height of Leymus chinensis accurately in certain precision level.