| 吉林蛟河天然阔叶红松林草本植物多样性及其与土壤因子的关系 |
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| 引用本文： | 龚艳宾,郭建斌,赵秀海,于诗卓. 吉林蛟河天然阔叶红松林草本植物多样性及其与土壤因子的关系[J]. 浙江农林大学学报, 2016, 33(4): 620-628. DOI: 10.11833/j.issn.2095-0756.2016.04.010 |
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| 作者姓名： | 龚艳宾 郭建斌 赵秀海 于诗卓 |
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| 作者单位： | 1.北京林业大学 水土保持学院, 北京 1000832.北京林业大学 林学院, 北京 100083 |
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| 基金项目： | "十二五"国家科技支撑计划项目2012BAD22B0203 |
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| 摘 要： | 于2014年生长季(5-9月)对设置在天然阔叶红松Pinus koraiensis林样地内的272个草本样方(1 m×1 m)进行物种及其植株高度、盖度以及土壤因子进行调查,应用Shannon-Wiener指数、Simpson指数、Gleason指数及相应的均匀度(Pielou指数)和生态优势度等指标分析天然阔叶红松林样地内草本植物物种多样性的生长期动态,并采用冗余分析方法(RDA)探讨了土壤因子对草本层多样性格局的影响。结果表明:①样地内草本植物物种组成丰富,共有91种,隶属于34科80属,以毛茛科Ranunculaceae和百合科Liliaceae的物种数最多,物种单科单属、单属单种现象很明显,其中单种属占总属数的90%以上,在样地内占有绝对优势。②草本植物物种组成及多样性月季变化较明显,物种Gleason指数、Simpson指数和Shannon-Wiener指数的月季变化趋势一致,在6月达到最大值,分别为13.727,0.924和3.093,9月取得最低值;Pielou指数也呈先增加后减小的变化趋势,在7月达到最大,9月最小。生态优势度指数从5月到9月逐月递增,表明草本植物在7月物种分配最为均匀,9月优势种最为突出。③冗余分析(RDA)排序图第1轴主要反映了土壤全钾质量分数与土壤pH值的变化趋势,RDA第2轴主要反映的是土壤速效磷质量分数的变化趋势,表明这些因子对草本植物多样性格局具有明显的影响。通过向前选择和蒙特卡洛(Monte Carl permutation test)检验分析也发现其中具有显著性影响作用的是土壤全钾质量分数和pH值(P=0.002)。
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| 关 键 词： | 森林生态学 阔叶红松林 草本植物 物种多样性 土壤因子 |
| 收稿时间： | 2015-09-25 |
Herbaceous species diversity as related to soil factors in a Korean pine broadleaved forest of Jiaohe,Jilin Province |
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| GONG Yanbin,GUO Jianbin,ZHAO Xiuhai,YU Shizhuo. Herbaceous species diversity as related to soil factors in a Korean pine broadleaved forest of Jiaohe,Jilin Province[J]. Journal of Zhejiang A&F University, 2016, 33(4): 620-628. DOI: 10.11833/j.issn.2095-0756.2016.04.010 |
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| Authors: | GONG Yanbin GUO Jianbin ZHAO Xiuhai YU Shizhuo |
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| Affiliation: | 1.School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China2.College of Forestry, Beijing Forestry University, Beijing 100083, China |
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| Abstract: | A study was performed to understand the seasonal variation of understory herb and its relation to soil factors in a natural broadleaved Korean pine study site. A total of 272 sub-plots(1 m×1 m) were monitored monthly from May to September in 2014. Shannon-Wiener, Simpson, and Gleason diversity indices with evenness (Pielou) and ecological dominance indices were used to explain the seasonal dynamics of herbaceous species diversity. Relationships among herb-layer diversity and soil attributes were studied using redundancy analysis (RDA), forward selection, and Monte Carlo test analysis. Results showed (1) a relatively high herbaceous richness of 91 species belonging to 34 families and 80 genera with Ranunculaceae and Liliaceae family dominating. The phenomenon of single family and single genera was prevalent with single species in a genera accounting for more than 90% of the total, thereby single genera holding an absolute advantage in herbaceous plant of the plot. (2) As the months changed, diversity of the herbaceous species changed peaking in June with diversity indices registering 13.727(Gleason), 0.924(Simpson), and 3.093(Shannon-Wiener). The Pielou index first increased to a maximum in July and then decreased to a minimum in September. Also, the ecological dominance index increased month by month from May to September. Herb species distribution was most uniform in July and most prominent of the dominant species in September. (3) The RDA sorting chart indicated that the first axis mainly reflects the change tendency of the soil total K and pH value,ed. and the second RDA axis reflects the change tendency of soil available P. Thus, soil total K, soil pH, and soil available P were the main soil factors affecting herbaceous diversity. In addition, forward selection and Monte Carlo test analysis showed that herbaceous species diversity was extremely significantly influenced by soil total K and pH(P=0.002). |
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