云南松天然林的种内和种间竞争
Intraspecific and Interspecific Competition of Pinus yunnanensis Natural Forest
-
摘要: [目的]通过对云南松天然林内云南松种内和种间竞争强度的测定,分析揭示竞争强度在云南松群落内的动态变化规律及云南松种群的生态适应机制.[方法]在云龙天池自然保护区云南松天然林设置样方进行群落学调查的基础上,采用Hegyi单木竞争指数模型,以云南松为对象木,定量分析林分、对象木、竞争木的竞争强度,采用回归分析方法建立对象木胸径与林分、种内、种间竞争强度的函数模型.[结果]天池自然保护区云南松天然林的种内和种间竞争强度分别为80.16%和19.84%;云南松种内与主要伴生树种种间竞争强度大小顺序为:云南松种内> 水红木> 华山松> 米饭花> 大白花杜鹃> 槲栎> 马缨花> 旱冬瓜;云南松与整个林分、伴生树种以及种内的竞争强度与对象木胸径之间存在显著负相关关系,对象木胸径越大,其竞争能力越强.[结论]云南松天然林内云南松的竞争压力主要来自种内竞争;林分种内及种间竞争强度与对象木胸径间存在CI=AD-B形式的幂函数关系;胸径20 cm以上云南松的竞争压力变化趋于平缓,胸径20 cm以下的云南松中、幼林是抚育管理的重点林分.Abstract: [Objective]By investigating the intraspecific and interspecific competition of Pinus yunnanensis natural forest in Tianchi Natural Reserve of Yunlong County, Yunnan Province to reveal the rule of dynamic changes of intensity of competition within the community and the ecological adaptation mechanism of P. yunnanensis.[Method]Based on survey of substantial community plots, the competition intensity of forest stand, objective trees, competitive trees were analyzed by using Hegyi individual competitive indices (CI) model. The function model between DBH and the whole competition, intraspecific competition, interspecific competition were established by regression analysis method. [Result]The intraspecific and interspecific competition intensity of P. yunnanensis accounted for 80.16% and 19.84% in the total competition intensity, respectively, indicating that the competitive trees of P. yunnanensis natural forest were mainly come from intraspecific competition. The order of the intraspecific and interspecific competition intensity of the main accompanying species at the community level was: intraspecific > Viburnum cylindricum > P. armandii > Lyonia ovalifolia > Rhododendron decorum > Quercus aliena > Rhododendron delavayi > Alnus nepalensis. [Conclusion]There was a significantly negative correlation between the competition index of P. yunnanensis with the whole forest, accompanying species, intraspecific and the DBH of the objective trees, and nearly conformed to power function (CI=AD-B). The larger the DBH of the objective trees, the smaller the competitive trees in P. yunnanensis natural forest. The results predicted by the model is that when the DBH of P. yunnanensis is larger than 20 cm, the competitions will be less in intensity. The medium and young forests of P. yunnanensis with DBH below 20 cm should be the focus of tending and management.
-
[1] 杜 峰, 梁宗锁, 山 仑, 等. 黄土丘陵区不同立地条件下猪毛蒿种内、种间竞争[J]. 植物生态学报, 2006, 30(4): 601-609. [2] 蒋国梅, 孙 国, 张光富, 等. 濒危植物宝华玉兰种内与种间竞争[J]. 生态学杂志, 2010, 29(2): 201-206. [3] 李帅锋, 刘万德, 苏建荣, 等. 滇西北金沙江流域云南红豆杉群落种内与种间竞争[J]. 生态学杂志, 2013, 32(1): 33-38. [4] 李 尤, 苏智先, 张素兰, 等. 珙桐群落种内与种间竞争研究[J]. 云南植物研究, 2006, 28(6): 625-630. [5] Cortini F, Comeau P G. Evaluation of competitive effects of green alder, willow and other tall shrubs on white spruce and lodgepole pine in Northern Alberta[J]. Forest ecology and management, 2008, 255(1): 82-91. [6] 王晓霞, 张钦弟, 毕润成, 等. 山西稀有濒危植物脱皮榆种内和种间竞争[J]. 生态学杂志, 2013, 32(7): 1756-1761. [7] Bella I E. A new competition model for individual trees[J]. Forest Science, 1971, 17(3): 364-372. [8] 张 池, 黄忠良, 李 炯, 等. 黄果厚壳桂种内与种间竞争的数量关系[J]. 应用生态学报, 2006, 17(1): 22-26. [9] 张 莉, 陆 畅, 李晓红, 等. 皇藏峪国家自然保护区青檀种群年龄结构及种内、种间竞争[J]. 上海交通大学学报: 农业科学版, 2012, 30(1): 34-40. [10] 项小燕, 吴甘霖, 段仁燕, 等. 大别山五针松种内和种间竞争强度[J]. 生态学报, 2015, 35(2):389-395. [11] 黄新峰, 亢新刚, 杨 华, 等. 5个林木竞争指数模型的比较[J]. 西北农林科技大学学报:自然科学版, 2012, 40(7): 127-134. [12] 蒋子涵, 金光泽. 择伐对阔叶红松林主要组成树种种内、种间竞争的影响[J]. 应用生态学报, 2010,20(9): 2179-2186. [13] 贾呈鑫卓, 苏建荣, 李帅锋, 等. 择伐对思茅松天然林乔木种间与种内关系的影响[J]. 植物生态学报, 2015, 38(12): 1296-1306. [14] 金振洲, 彭 鉴. 云南松[M]. 昆明: 云南科技出版社,2004. [15] 李贵祥, 施海静, 孟广涛, 等. 云南松原始林群落结构特征及物种多样性分析[J]. 浙江林学院学报, 2007, 24(4): 396-400. [16] 姜 磊, 陆元昌, 廖声熙, 等. 滇中高原云南松林分直径结构研究[J]. 林业科学研究, 2008, 21(1): 126-130. [17] 廖声熙, 李 昆, 陆元昌, 等. 滇中高原云南松林目标树优势群体的生长过程分析[J]. 林业科学研究, 2009, 22(1): 80-84. [18] 彭建松, 柴 勇, 孟广涛, 等. 云南金沙江流域云南松天然林林隙更新研究[J]. 西北林学院学报, 2005, 20(2): 114-117. [19] 袁凤军, 崔 凯, 廖声熙, 等. 滇中云南松天然林空间结构特征[J]. 西南农业学报, 2013, 26(3): 1223-1226. [20] Hegyi F. A simulation model for managing jack-pine stands[J]. Growth models for tree and stand simulation, 1974(30): 74-90. [21] 张金屯. 植物种群空间分布的点格局分析[J]. 植物生态学报, 1998, 22(4): 344-349. [22] 刘方炎, 李 昆, 廖声熙, 等. 濒危植物翠柏的个体生长动态及种群结构与种内竞争[J]. 林业科学, 2010, 46(10): 23-28. [23] 邹春静, 徐文铎. 沙地云杉种内, 种间竞争的研究[J]. 植物生态学报, 1998, 22(3): 269-274. [24] 胡 刚, 梁士楚, 张忠华, 等. 桂林岩溶石山青冈栎种内与种间竞争的数量关系[J]. 西北林学院学报, 2008, 22(5): 32-36. [25] 康华靖, 陈子林, 刘 鹏, 等. 大盘山香果树 (Emmenopterys henryi) 种内及其与常见伴生种之间的竞争关系[J]. 生态学报, 2008, 28(7): 3456-3463.
计量
- 文章访问数: 3866
- HTML全文浏览量: 257
- PDF下载量: 887
- 被引次数: 0