【摘要】 采用Г.Τ.Селянинов的水热指数、Kira热量指数和Penman的蒸散指数对豫西黄土丘陵区林草植被水分适宜度进行了评价。在大尺度气候的背景下,植被群落以落叶阔叶林带为主,气候条件的变化和植被的经向和纬向分布基本吻合。在中气候条件下,同时存在着乔木林、灌木林和草本植被三种典型的植被类型,植被地理分布的一致性和适用性的模拟效果较好。因此,提出了一种以旬气温为参数绘制气候—植被图的新方法,应用结果表明:该法简便可靠。更多还原

【Abstract】 The moisture suitability of the forest-grass vegetation in the loess hilly region of the West Henan Province is evaluated with the water-heat index of Г. Τ. Селянинов,the heat index of Kira and the evapotranspiration index of Penman. Under the background of large scale climate,the vegetation communities are mainly consisted of deciduous broadleaved forest belts and the change of climate conditions is basically consistent with the longitudinal and latitudinal distributions of the vegetation. Under the condition of mesoclimate,three typical vegetation forms including high-forest,shrub forest and grassland appear simultaneously and the effect of the simulation made on the consistency and applicability of the geographical distribution of vegetation is better. Therefore,a new method that takes the temperature of ten-days as the parameter,i. e. the climate-vegetation diagram,is put forward and the relevant application result shows that it is quite convenient and reliable.更多还原