摘要
黄土高原地区,燃料、肥料、饲料俱缺,气候干旱,水分是影响植物生长发育的主要生态因子。因此,研究植物对干旱的适应特征,可为营造能源林树种的选择和建立高产、稳产的能源林人工植被提供理论依据。根据对19种树草种叶片横切面形态结构进行镜检可分为三类:第一类是旱生结构一般的有火炬树、红豆草、沙枣和胡枝子4种;第二类是旱生结构较明显的有杜梨、紫穗槐、榆树、黄花草木樨、紫花苜蓿、山定子和山桃7种;第三类是旱生结构明显的有沙棘、柽柳,沙打旺、沙柳、山杏、柠条锦鸡儿、刺槐和小叶锦鸡儿8种。
On the loess plateau there is a lack of three'F', i.e., fuel, fertilizer and forage, with arid climate, water is thought as an important ecological factor impacting the growth and development of plant.Thus it is suggested that it could provide bases for the selecitng of plant speciese to construct energy forest and the building of artificial vegetation with high and stable yield to study the suitability of plants to arid environ ment.Through lens observation to morphorlogical structure of leaf cross section of 19 plants, it is found that theyc could be divided into three groups, indicated as follows, the first group is with ordinary xero-structure, including Rhus typhilla Linn., Onobryhis viciaefolia Sccp., Elaeganus angustifolia L., Lespedeza bicolor Turcz.; the second with evident xero-structure,including Pyrus betulaefolia Linn., Amorpha fruitcosa Linn., Ulmus pumila Linn., Melilotus officicalis (L.) Dest., Medicago sativa Linn., Malus baccata (L.) Borkh., and the third is with more evident xero-structure, they are Hippophae rhamnoides Linn., Tamarix chinensis Lour., Astragalus adsurgens Pall., Salix mongolica Siuzov., Arme niaca silirica (L.) Lam., Cargana korshinskii kom., Robinia pseudoacacia Linn. and Caragana microphylla Lam.
出处
《水土保持学报》
CSCD
北大核心
1989年第1期20-30,共11页
Journal of Soil and Water Conservation
