黄河三角洲新生湿地3种柽柳灌丛对土壤有机碳空间分布的影响研究

doi:10.16258/j.cnki.1674-5906.2022.01.002

生态环境学报 ›› 2022, Vol. 31 ›› Issue (1): 9-16.DOI: 10.16258/j.cnki.1674-5906.2022.01.002

黄河三角洲新生湿地3种柽柳灌丛对土壤有机碳空间分布的影响研究

王浩(), 陈永金^*(), 刘加珍, 万波, 张丽

聊城大学地理与环境学院,山东聊城 252059

收稿日期:2021-04-30 出版日期:2022-01-18 发布日期:2022-03-10
通讯作者: *陈永金（1968年生）,男,副教授,博士,主要研究方向为自然地理与生态环境。E-mail: chenyongjin@lcu.edu.cn
作者简介:王浩（1984年生）,男（满族）,讲师,博士,主要研究方向为区域环境与生态。E-mail: wanghao@lcu.edu.cn
基金资助:
国家自然科学基金项目(40901276);国家自然科学基金项目(40871239);聊城大学博士科研基金项目(318051529);聊城大学科研基金项目（人文社科类）(321021916)

Effects of Three Types Tamarix Shrubs Communities on Spatial Distribution of Soil Organic Carbon in the New Wetland of the Yellow River Delta

WANG Hao(), CHEN Yongjin^*(), LIU Jiazhen, WAN Bo, ZHANG Li

School of Geography and Environment, Liaocheng University, Liaocheng 252059, P. R. China

Received:2021-04-30 Online:2022-01-18 Published:2022-03-10

摘要/Abstract

摘要：

研究河口湿地不同类型柽柳灌丛土壤有机碳的空间分布规律,探讨植被演替对土壤有机碳的影响,有助于了解河口湿地生态保护及土壤改良的科学规律。以黄河三角洲新生湿地为研究对象,选择柽柳-碱蓬（Tamarix-Suaeda）、柽柳（Tamarix chinensis）和柽柳-禾草（Tamarix-Gramineae）3种灌丛群落类型,分析各群落土壤有机碳的空间分布特征,研究柽柳灌丛群落演替对有机碳空间分布的影响,探讨土壤有机碳与盐分、水分的关系。研究结果表明,（1）3种柽柳灌丛土壤有机碳的浓度随演替进程而增加,以柽柳-禾草群落最高,柽柳-碱蓬群落最低;且有机碳浓度随土层深度增加而降低,均呈现出与灌丛中心距离的增加而降低的规律,并以0—10 cm土层表现最为明显。（2）3种柽柳灌丛冠幅下土壤有机碳均有明显的聚集性,柽柳-禾草与柽柳灌丛最大富集系数出现在0—10 cm土层,分别为1.93和1.48;而柽柳-碱蓬灌丛最大富集系数在30—40 cm土层,为1.23。（3）柽柳-禾草灌丛与柽柳灌丛土壤有机碳表现出一定的冠幅边缘聚集性,最大富集系数为0—10 cm土层的1.24和1.22;柽柳-碱蓬群落冠缘有机碳富集性不明显,最大富集系数为1.04。（4）3种柽柳灌丛土壤电导率均呈现出与灌丛中心距离的增加而升高的趋势,而土壤水分表现出与灌丛中心距离的增加而降低的趋势,且随演替进程土壤电导率有降低的趋势,而含水率呈升高的趋势,但3种柽柳灌丛pH差异并不显著;3种柽柳灌丛土壤有机碳与电导率有显著的负相关性,与土壤含水率有显著的正相关性,而与pH没有显著的相关关系。

关键词: 柽柳, 灌丛, 土壤有机碳, 空间分布, 黄河三角洲, 演替

Abstract:

The spatial distribution of soil organic carbon (SOC) in different types of Tamarix shrubs during the process of vegetation succession is a useful indicator for understanding the rules of ecological protection and soil improvement in estuarine wetlands. In this study, the Tamarix-Suaeda, Tamarix chinensis, and Tamarix-Gramineae shrub communities in the new wetland of the Yellow River Delta (YRD) were selected to study the spatial distribution characteristics of soil organic carbon and the relationship between soil organic carbon and water and salt during the succession process of Tamarix shrub community. The results showed that: (1) The soil organic carbon content of the three types of Tamarix shrub communities increased during the succession process and decreased as the distance from the center of the shrub and/or the soil depth increased. The most significant difference occurred in the 0-10 cm soil layer. (2) The soil organic carbon was significantly concentrated under the canopy of three types of Tamarix shrub communities. The maximum concentration factor appeared in the 0-10 cm soil layer for the Tamarix-Gramineae and Tamarix chinensis communities (1.98 and 1.48). For the Tamarix-Suaeda community (1.23), the concentration occurred in the 30-40 cm soil layer. (3) Soil organic carbon showed moderate enrichment at the canopy edge of the Tamarix-Gramineae and Tamarix chinensis communities; and the maximum concentration factor appeared in the 0-10 cm soil layer (i.e.,1.24 and 1.22 respectively). However, there was no significant enrichment of soil organic carbon in the Tamarix-Suaeda community, and the maximum concentration factor was 1.04. (4) As the distance from the center of the shrub increased, the soil electric conductivity (EC) of the three types of Tamarix shrub communities increased, but the soil moisture content decreased. In addition, during the succession process, the EC decreased and soil moisture increased. The pH of the three types of Tamarix shrub communities had no significant difference. Soil organic carbon had a significant negative correlation with EC and positive correlation with soil moisture, but no significant relationship with pH.

Key words: Tamarix, shrub, soil organic carbon, spatial distribution, Yellow River Delta, succession

中图分类号:

S718.5
X144

王浩, 陈永金, 刘加珍, 万波, 张丽. 黄河三角洲新生湿地3种柽柳灌丛对土壤有机碳空间分布的影响研究[J]. 生态环境学报, 2022, 31(1): 9-16.

WANG Hao, CHEN Yongjin, LIU Jiazhen, WAN Bo, ZHANG Li. Effects of Three Types Tamarix Shrubs Communities on Spatial Distribution of Soil Organic Carbon in the New Wetland of the Yellow River Delta[J]. Ecology and Environment, 2022, 31(1): 9-16.

图/表 5

图1 研究区地理位置图

Figure 1 Location of the study area

图2 3种柽柳灌丛距中心不同距离土壤有机碳的变化 n=12,不同大写字母表示距离灌丛中心不同距离之间的差异达到显著水平（P<0.05）,不同小写字母表示不同土层之间的差异达到显著水平（P<0.05）

Figure 2 Changes in soil organic carbon at different depths around the individual of Tamarix n=12, Different capital letters indicate significant differences among the distance from the center of the shrub (P<0.05). Different small letters indicate significant differences among the soil depth (P<0.05)

图3 不同生境土壤有机碳的富集系数 n=12,不同大写字母表示不同类型柽柳灌丛的差异达到显著水平（P<0.05）,不同小写字母表示不同土层之间的差异达到显著水平（P<0.05）

Figure 3 Concentration factor of soil organic carbon in different habitat n=12, Different capital letters indicate significant differences among three types Tamarix shrubs communities (P<0.05). Different small letters indicate significant differences among the soil depth (P<0.05)

图4 土壤理化性质 n=12,不同大写字母表示不同类型柽柳灌丛的差异达到显著水平（P<0.05）,不同小写字母表示距离灌丛中心不同距离之间的差异达到显著水平（P<0.05）

Figure 4 Physical and chemical properties of soil n=12, Different capital letters indicate significant differences among three types Tamarix shrubs communities (P<0.05). Different small letters indicate significant differences among the distance from the center of the shrub (P<0.05)

表1 土壤有机碳与理化性质之间的关系

Table 1 Correlations between SOC and soil properties

指标 Index	土壤有机碳 Soil organic carbon	电导率 Electric conductivity	pH	含水率 Soil moisture
土壤有机碳 Soil organic carbon	1
电导率 Electric conductivity	-0.150^**	1
pH	-0.005	-0.200^**	1
含水率 Soil moisture	0.145^**	-0.206^**	0.022	1

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黄河三角洲新生湿地3种柽柳灌丛对土壤有机碳空间分布的影响研究

Effects of Three Types Tamarix Shrubs Communities on Spatial Distribution of Soil Organic Carbon in the New Wetland of the Yellow River Delta

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