摘要
以荒草坡为对照,对黄土丘陵区封禁8 a2、0 a和30 a的狼牙刺群落的狼牙刺种群结构进行了研究,分析了种群的年龄结构、垂直结构、生命表,存活曲线规律。结果表明:不同恢复阶段的狼牙刺种群个体平均基径、高度差异明显:30 a的垂直高度>20 a垂直高度>8 a垂直高度>荒草坡,说明不同恢复阶段狼牙刺种群年龄结构均属于进展型。随着狼牙刺恢复,种群稳定性增加。狼牙刺种群适应力、繁殖力强,是严酷条件下植被恢复的优良树种,应该充分利用其优良特性,抑制不利的环境因素,以封禁和生态修复为主,迅速恢复严酷生境条件下的植被。
Taking barren grass land as contrast area, Sophora davidii population structures in different stages of recovery in Sophora davidii communities that was closed for 8 years, 20 years and 30 years in loess hilly were researched systematically. The diameter class, vertical height class,life table,survival curves were analyzed.The results showed that the mean basal diameter, hoight of Sophora davidii populations in different stages of recovery were significantly different： 30 years 〉 vertical height in 20 years 〉 vertical height in 8 years 〉 barren grass land, Sophora drvidii population in loess hilly region was a developing one. Stability of population was increased as the community recovery developed. Compatibility and reproduction ability of Sophora davidii popolations were stronger, and it is a perfect tree species in recovery of vegetation in harsh condition. Therefore its excellent characters should be used, unfavorable environment factors should be refrained and closing management for the ecological reconstruction should be carried out,so as to restore vegetation quickly in harsh conditions.
出处
《河北林果研究》
2006年第1期5-9,共5页
Hebei Journal of Forestry and Orchard Research
基金
中科院知识创新项目(KZCX1-06)
关键词
狼牙刺
年龄结构
生命表
存活曲线
Sophora davidii
age structure
life table
survival curves
作者简介
徐学华（1976-）。男。宁夏中卫人，硕士，助教。主要从事植物生态学。生物多样性教学和科研工作。
