[1]韩福贵,孙涛,郭树江,等. 干旱荒漠区不同演替阶段白刺灌丛沙堆土壤呼吸特征及其影响因素分析[J].西北林学院学报,2017,32(5):1-7.[doi:10.3969/j.issn.1001-7461.2017.05.01]
　HAN Fu-gui,SUN Tao,GUO Shu-jiang,et al. Characteristics of Soil Respiration of Nitraria tangutorum at Different Succession Stages in Desert Areas & the Influencing Factors[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(5):1-7.[doi:10.3969/j.issn.1001-7461.2017.05.01]
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 干旱荒漠区不同演替阶段白刺灌丛沙堆土壤呼吸特征及其影响因素分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第5期
页码:
1-7
栏目:
出版日期:
2017-09-30

文章信息/Info

Title:
 Characteristics of Soil Respiration of Nitraria tangutorum at Different Succession Stages in Desert Areas & the Influencing Factors
文章编号:
1001-7461(2017)05-0001-07
作者:
 韩福贵; 孙涛; 郭树江; 段晓峰; 张裕年; 王景瑞
 (甘肃省治沙研究所/甘肃河西走廊森林生态系统国家定位观测研究站定位研究站/甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地/甘肃民勤荒漠草地生态系统国家野外科学观测研究站，甘肃 武威 733000)
Author(s):
 HAN Fu-gui; SUN Tao; GUO Shu-jiang; DUAN Xiao-feng; ZHANG Yu-nian; WANG Jing-rui
（Gansu Desert Control Research Institute/Gansu Hexi Corridor Forest Ecosystem National Research Station/State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating,Lanzhou/Minqin National Station for Desert Steppe Ecosystem Studies,Wuwei,Gansu 733000,China）
关键词:
 ; 干旱荒漠区; 白刺灌丛; 演替阶段; 土壤呼吸; 水分; 温度
Keywords:
 ; desert area;  Nitraria tangutorum;  succession stage;  soil respiration;  soil water;  temperature
分类号:
S718.516
DOI:
10.3969/j.issn.1001-7461.2017.05.01
文献标志码:
A
摘要:
 为了研究干旱荒漠区不同演替阶段白刺土壤呼吸特征，探讨土壤呼吸对环境因子变化的响应，采用自动土壤二氧化碳通量监测系统，测定了不同演替阶段（雏形、稳定、发育、衰退）白刺灌丛沙堆的土壤呼吸速率，同步测定了土壤温度、水分等指标，分析了环境因子与土壤呼吸之间的关系。结果表明：1）不同演替阶段白刺灌丛沙堆土壤呼吸变化呈“单峰曲线”。土壤呼吸速率均值按大小顺序排列为稳定阶段＞雏形阶段＞发育阶段＞衰退阶段；2）4种演替阶段土壤呼吸速率与10 cm处土壤温度之间有一定的相关关系，对白刺灌丛沙堆土壤温度可以解释雏形70.16%、发育82.67%、稳定87.81%、衰退88.73%的土壤呼吸变化；3）随着水分的增加，土壤呼吸速率也相应的增大，当土壤水分达到最高时，水分的限制作用减小，水分增加对土壤呼吸的促进作用减弱；4）各发育阶段不同坡位土壤呼吸日变化动态存在差异，但平均值都表现为迎风坡中部＞迎风坡底部＞迎风坡顶部＞背风坡中部＞背风坡底部。对不同演替阶段白刺灌丛沙堆土壤呼吸及其影响因素的研究有助于认识区域生态过程和全球气候变化。
Abstract:
 In order to study the soil respiration of Nitraria tangutorum at different succession stages (the initial,stable,developmental and degradation stages) as well as the response of soil respiration to environmental factors,the automatic soil CO2 flux monitoring system (Li-8100,LI-C0R Inc.,Lincoln,NE,USA）was used to determine the soil respiration rate.Soil temperature and soil water were measured simultaneously.The correlations between environment factors and soil respiration rate were analyzed.The result showed that :1) the variation of soil respiration presented a single-peak curve.The soil respiration rate was ranked from high to low as:stable stage＞initial stage＞developmental stage＞degradation stage; 2) The soil respiration rate at different stages was correlated with soil temperature at the depth of 10 cm.The soil respiration rates in initial,stable,developmental and degradation stages were 70.16%,87.81%,82.67%,and 88.73%,respectively;3) With the increase of soil water,soil respiration increased.When soil water reached the maximum value,the limitation function of soil water reduced,the impact of soil water increase on soil respiration reduced;4) The daily variation of soil respiration at different slope positions were different.The mean values was in the order of the middle of windward slope ＞ base of windward slope ＞ top of windward slope ＞ middle of leeward slope ＞ the base of leeward slope.

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备注/Memo

备注/Memo:
 收稿日期：2017-02-08 修回日期：2017-03-23
基金项目：国家自然科学青年基金项目“干旱区白刺灌丛沙堆发育过程的土壤呼吸时空变化特征及其影响因素”（31300595）。
作者简介：韩福贵，女,副研究员，研究方向：荒漠化生态定位。E-mail:hanfug2008@126.com
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