松栎混交林中马尾松的种内种间竞争  

Intraspecific and interspecific competition of Pinus massoniana and Quercus acutissima mixed artificial forest

作　　者：付梦瑶 崔秋芳[1] 吴明[1] 陈家林[1] 杨喜田[1] 

机构地区：[1]河南农业大学林学院,河南郑州450002

出　　处：《河南农业大学学报》2016年第3期311-317,共7页Journal of Henan Agricultural University

基　　金：国家自然科学基金项目(31570613)

摘　　要：通过对马尾松(Pinus massoniana)-麻栎(Quercus acutissima)人工混交林的124株对象木及473株竞争木的调查,采用竞争影响区域法与HEGYI单木竞争模型相结合的方法对马尾松-麻栎人工混交林的种内、种间竞争关系进行研究。结果表明,样地内Ⅳ级和V级马尾松数量较多,所占的比重较大;I级马尾松幼苗数量较少。马尾松种内和种间竞争强度均随对象木径级的增大而减小,同一径级的种间竞争均大于种内竞争。竞争强度与对象木胸径的关系服从幂函数关系CI=AD^(-B),当对象木胸径DBH≥20cm时,竞争强度无明显变化。所得的预测模型能很好的预测马尾松-麻栎人工混交林种内和种间竞争强度。In this study, we investigated the intraspecific and interspecific competition of Pinus masso- niana and Quercus acutissima mixed artificial forest, using competition area method and HEGYI individ- ual competitive indices （CI） model. The competition intensity was analysed from the 124 target trees and 473 competitive trees within the mixed forest. The results showed that the number of Class IV and Class V of Pinus massoniana was larger and took up great proportion; Class I accounted for a small number. The Pinus massoniana mixed artificial forests in this locality for the most part are young forest and mature forest. The intraspecific and interspecific competition intensity of subjective tree Pinus mas- soniana decreased with the increasing in diameter and the interspecific competition intensity was more intensive than intraspecific competition intensity. The relationship between the whole forest competition intensity and DBH of the target tree followed the power function （CI = AD^-B）. The competition inten- sity appeared weaker, when DBH of objective tree was≥20cm. In conclusion, this model could effec- tively predict the intraspecific and interspecific competition of Pinus massoniana and Quercus acutissima mixed artificial forests.

关 键 词：马尾松-麻栎人工混交林 种内竞争 种间竞争 竞争指数 

分 类 号：S152.7[农业科学—土壤学] S512.1[农业科学—农业基础科学]