植物生态学报 ›› 2019, Vol. 43 ›› Issue (9): 817-824.DOI: 10.17521/cjpe.2018.0186
吴盼,彭希强,杨树仁,高亚男,白丰桦,衣世杰,杜宁(),郭卫华(
)
收稿日期:
2018-07-31
接受日期:
2019-01-13
出版日期:
2019-09-20
发布日期:
2020-01-03
通讯作者:
杜宁,郭卫华
基金资助:
WU Pan,PENG Xi-Qiang,YANG Shu-Ren,GAO Ya-Nan,BAI Feng-Hua,YI Shi-Jie,DU Ning(),GUO Wei-Hua(
)
Received:
2018-07-31
Accepted:
2019-01-13
Online:
2019-09-20
Published:
2020-01-03
Contact:
DU Ning,GUO Wei-Hua
Supported by:
摘要:
柽柳(Tamarix chinensis)是暖温带滨海盐碱湿地的先锋灌木物种, 在滨海湿地植物群落演替和防止沿海地区海水入侵中发挥着重要的作用。研究柽柳种群的空间分布格局和不同径级柽柳个体之间的空间关联性, 揭示种群发展规律, 可以为盐碱地柽柳种群的保护提供指导, 并为滨海湿地生态系统的演替和生态管理提供依据。该研究在昌邑国家海洋生态特别保护区核心区内沿平行海岸线方向设置两条间隔800 m左右的样带, 每条样带上设置3个50 m × 50 m的样地, 共设置6块样地进行每木调查, 绘制柽柳种群空间位置分布图, 并将调查的柽柳按照其基径大小分为≤4 cm、4-8 cm、>8 cm 3个不同径级。利用Programita软件对柽柳种群的分布格局以及不同径级间的空间关联性进行分析。结果显示: (1) 6块样地共调查柽柳个体374株; (2)不同样地间柽柳植株密度差别较大, 说明柽柳在区域尺度上的分布并不均匀; (3)柽柳种群在小尺度(小于5 m)上表现为聚集分布, 在大尺度(大于15 m)上表现为随机分布, 总体表现为随空间尺度的增大柽柳种群呈现由聚集分布过渡到随机分布的趋势; (4) 3个径级两两之间在小尺度上表现为正关联, 在大尺度上表现为无关联, 但在15 m尺度上径级II与径级III因为竞争而呈空间负相关关系。
吴盼, 彭希强, 杨树仁, 高亚男, 白丰桦, 衣世杰, 杜宁, 郭卫华. 山东省滨海湿地柽柳种群的空间分布格局及其关联性. 植物生态学报, 2019, 43(9): 817-824. DOI: 10.17521/cjpe.2018.0186
WU Pan, PENG Xi-Qiang, YANG Shu-Ren, GAO Ya-Nan, BAI Feng-Hua, YI Shi-Jie, DU Ning, GUO Wei-Hua. Spatial distribution patterns and correlation of Tamarix chinensis population in coastal wetlands of Shandong, China. Chinese Journal of Plant Ecology, 2019, 43(9): 817-824. DOI: 10.17521/cjpe.2018.0186
图2 山东滨海湿地柽柳个体空间分布散点图。A, 样地1。B, 样地2。C, 样地3。D, 样地4。E, 样地5。F, 样地6。
Fig. 2 Scatterplot of spatial distribution of Tamarix chinensis in coastal wetlands of Shandong. A, Plot 1. B, Plot 2. C, Plot 3. D, Plot 4. E, Plot 5. F, Plot 6.
样地 Plot | 海拔 Elevation (m) | 土壤有机碳 Soil organic carbon (%) | 个体数(比例) Individual No. (Ratio) | 合计 Total | ||
---|---|---|---|---|---|---|
I | II | III | ||||
1 | 2 | 0.339 1 | 2 (0.14) | 10 (0.71) | 2 (0.14) | 14 |
2 | 1 | 0.368 0 | 1 (0.05) | 10 (0.50) | 9 (0.45) | 20 |
3 | 6 | 0.357 3 | 18 (0.50) | 14 (0.39) | 4 (0.11) | 36 |
4 | -1 | 0.381 3 | 0 (0.00) | 36 (0.80) | 9 (0.20) | 45 |
5 | -1 | 0.449 0 | 31 (0.14) | 140 (0.63) | 50 (0.23) | 221 |
6 | 10 | 0.387 9 | 7 (0.18) | 25 (0.66) | 6 (0.16) | 38 |
合计 Total | - | - | 59 (0.16) | 235 (0.63) | 80 (0.21) | 374 |
表1 山东滨海湿地柽柳种群各样地基本信息及不同径级柽柳组成
Table 1 Basic information and compositions of Tamarix chinensis at different diameter grades in each plot in coastal wetlands of Shandong
样地 Plot | 海拔 Elevation (m) | 土壤有机碳 Soil organic carbon (%) | 个体数(比例) Individual No. (Ratio) | 合计 Total | ||
---|---|---|---|---|---|---|
I | II | III | ||||
1 | 2 | 0.339 1 | 2 (0.14) | 10 (0.71) | 2 (0.14) | 14 |
2 | 1 | 0.368 0 | 1 (0.05) | 10 (0.50) | 9 (0.45) | 20 |
3 | 6 | 0.357 3 | 18 (0.50) | 14 (0.39) | 4 (0.11) | 36 |
4 | -1 | 0.381 3 | 0 (0.00) | 36 (0.80) | 9 (0.20) | 45 |
5 | -1 | 0.449 0 | 31 (0.14) | 140 (0.63) | 50 (0.23) | 221 |
6 | 10 | 0.387 9 | 7 (0.18) | 25 (0.66) | 6 (0.16) | 38 |
合计 Total | - | - | 59 (0.16) | 235 (0.63) | 80 (0.21) | 374 |
图3 山东滨海湿地柽柳个体的空间点格局分析。A、B、C、D、E、F分别表示样地1、2、3、4、5、6。O(r), 单变量O-ring函数。
Fig. 3 Point pattern analysis of Tamarix chinensis in coastal wetlands of Shandong. A, B, C, D, E and F represent plot 1, 2, 3, 4, 5 and 6, respectively. O(r), univariate O-ring function.
图4 山东滨海湿地柽柳不同径级的空间关联性。A, 径级I和径级II。B, 径级I和径级III。C, 径级II和径级III。O12(r), 双变量O-ring函数。
Fig. 4 Spatial association of Tamarix chinensis at different diameter grades in coastal wetlands of Shandong. A, Diameter grade I and diameter grade II. B, Diameter grade I and diameter grade III. C, Diameter grade II and diameter grade III. O12(r), bivariate O-ring function.
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