北京市戒台寺、潭柘寺古树衰老的几个生理特征研究

Study of Physiological Characteristics of Ancient Tree in Jietai Temple and Tanzhe Temple of Beijing

通过对北京市戒台寺和潭柘寺的卧龙松、自在松、抱塔松、活动松等油松、九龙松(白皮松)、娑罗树(七叶树东西两棵)等古树的树体温度、叶绿素含量、树叶及土壤矿物质含量等生理参数进行测定,并与40年生的油松、白皮松、七叶树生长正常的植株进行比较,得出如下结论:(1)树木的衰弱程度与其树体温度有一定相关性,即越衰老的树木树体温度越高;(2)老树叶片的叶绿素含量一般均比健壮植株低;(3)衰老古树呈现明显的缺素症状。

Some physiological parameters such as tree temperature, content of chlorophyll, content of mineral elements in both leaves and soil of Wolong pine, Zizai pine, Baota pine, Huodong pine (ancient tress of Pinus tabulaefrmis), Jiulong pine (ancient tree of Pinus bungeana) and Suoluo tree (ancient trees of Aesculus chinensis) were measured. The results of measuration were compared with that of 40 years old normally growing trees of the same species. Three conclusions were drawn as follows: (1) There was correlation between senescence extend and the tree temperature, the more senile the tree was, the higher tree temperature it had;( 2) The chlorophyll content of old tree was lower than that of the controls; (3) Element deficiency was obviously observed in senile trees.