干旱区生态环境知识资源中心(Arid): 沙埋对干旱沙区生物结皮覆盖土壤温室气体通量的影响

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	沙埋对干旱沙区生物结皮覆盖土壤温室气体通量的影响
其他题名	Effects of sand burial on fluxes of greenhouse gases from the soil covered by biocrust in an arid desert region
	滕嘉玲; 贾荣亮; 胡宜刚; 徐冰鑫; 陈孟晨; 赵芸
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2016
卷号	27 期号:3 页码:723-734
中文摘要	以腾格里沙漠东南缘自然植被区生长的两种典型生物结皮藓类和藻类-地衣混生结皮覆盖土壤为对象,通过设置0(对照)、1 mm(浅层)和10 mm(深层)沙埋处理,研究了沙埋对该区结皮覆盖土壤温室气体通量的影响,并通过测定沙埋后土壤温度、水分的变化,初步探讨了沙埋影响生物结皮覆盖土壤温室气体通量的环境机制.结果表明:沙埋显著增加了两类结皮覆盖土壤的CO_2释放通量和CH_4吸收通量(P<0.05);但对N_2O通量的影响因沙埋厚度和结皮类型的不同而异:深层沙埋(10 mm)显著增加了两类结皮覆盖土壤的N_2O吸收通量,浅层沙埋(1 mm)仅显著降低了藓类结皮覆盖土壤的N_2O吸收通量,而对混生结皮覆盖土壤的N_2O通量影响不显著.沙埋显著增加了两类结皮覆盖土壤的表层温度和0~ 5 cm深土壤湿度,从而增加了其CO_2释放通量.但是沙埋引起的土壤温湿度的变化与CH_4和N_2O通量变化的相关性不显著,说明沙埋引起的土壤温湿度变化不是影响其CH_4和N_2O通量的关键因子.
英文摘要	Based on the measurements of the fluxes of CO_2,CH_4 and N_2O from the soil covered by two types of biocrusts dominated separately by moss and algae-lichen,followed by 0 (control), 1(shallow) and 10 (deep) mm depths of sand burial treatments,we studied the effects of sand burial on greenhouse gases fluxes and their relationships with soil temperature and moisture at Shapotou, southeastern edge of the Tengger Desert. The results showed that sand burial had significantly positive effects on CO_2 emission fluxes and CH_4 uptake fluxes of the soil covered by the two types of biocrusts, but imposed differential effects on N_2O fluxes depending on the type of biocrust and the depth of burial. Deep burial (10 mm) dramatically increased the N_2O uptake fluxes of the soil covered by the two types of biocrusts,while shallow burial (1 mm) decreased the N_2O uptake flux of the soil co-vered by moss crust only and had no significant effects on N_2O uptake flux of the soil covered by algae-lichen crust. In addition,CO_2 fluxes of the two biocrusts were closely related to the soil temperature and soil moisture,thereby increasing with the raised soil surface temperature and soil moisture caused by sand burial. However,the relationships of burial-induced changes of soil temperature and moisture with the changes in the other two greenhouse gases fluxes were not evident, indicating that the variations of soil temperature and moisture caused by sand burial were not the key factors affecting the fluxes of CH_4 and N_2O of the soil covered by the two types of biocrusts.
中文关键词	生物结皮 ; 沙埋 ; 温室气体通量 ; 沙区
英文关键词	biocrust sand burial greenhouse gases desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5661500
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235236
作者单位	中国科学院寒区旱区环境与工程研究所沙坡头沙漠试验研究站, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	滕嘉玲,贾荣亮,胡宜刚,等. 沙埋对干旱沙区生物结皮覆盖土壤温室气体通量的影响[J]. 中国科学院西北生态环境资源研究院,2016,27(3):723-734.
APA	滕嘉玲,贾荣亮,胡宜刚,徐冰鑫,陈孟晨,&赵芸.(2016).沙埋对干旱沙区生物结皮覆盖土壤温室气体通量的影响.应用生态学报,27(3),723-734.
MLA	滕嘉玲,et al."沙埋对干旱沙区生物结皮覆盖土壤温室气体通量的影响".应用生态学报 27.3(2016):723-734.