干旱区生态环境知识资源中心(Arid): 中国典型生态系统土壤硝化强度的整合分析

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	中国典型生态系统土壤硝化强度的整合分析
其他题名	META-ANALYSIS OF SOIL NITRIFICATION ACTIVITY IN ECOSYSTEMS TYPICAL OF CHINA
	郭志英; 贾仲君
来源期刊	土壤学报
ISSN	0564-3929
出版年	2014
卷号	51 期号:6 页码:1317-1324
中文摘要	针对国内外1959年至2013年间发表的2 900篇中国土壤硝化相关论文,获得288组中国土壤硝化强度数据,涉及26个省份,初步构建了开放式的中国土壤硝化信息系统。进一步利用整合分析,评估了土壤理化性质与土壤硝化强度的可能联系。结果表明:不同生态系统之间硝化速率由大到小依次为:农田(NO_3~--N 1.390.27 mg kg ~(-1) d ~(-1))、草地(0.740.17)、森林(0.660.16)、沙漠(0.170.08)、湿地(0.060.04)。在统计显著性的前提下,硝化强度与环境因子之间表现出一定的相关性趋势:即硝化强度与pH、有效磷、硝态氮正相关,与有机碳、速效氮和碳氮比负相关。在较大时空尺度下,生态系统类型是土壤硝化过程地理分异规律的最优解释因子,可能在硝化微生物形成与演替过程中发挥了重要作用。
英文摘要	Nitrification plays an important role in global nitrogen recycling and exists ubiquitously on earth. Nitrification activity determines nitrogen transformation process and is solely catalyzed by ammonia oxidizers and nitrite oxidizers. Nitrification has been intensively investigated, generally, on a field scale in a single location but little has been done on a large scale. On a global scale, soil varies and distributes in the epigeosphere regularly according to certain laws as affected by different hydrothermal conditions. Meanwhile, soil microbial communities exhibit distinct biogeographic patterns and their distribution is mainly influenced by contemporary environmental factors and historical evolutionary factors. However, almost little is known about spatial patterns of functionally important biogeochemical processes that are mainly driven by microbial communities. In this study, here we report the construction of a soil nitrification database, meta-analysis of nitrification activity in ecosystems typical of China and main driving forces of nitrification rate on a national scale. From the 2 900 papers published both abroad and at home during the period of 1959-2013 on soil nitrification and found available in the literature database of soil science, 111 papers were collected according to the same data mining standards. A total of 288 sets of data were obtained on soil nitrification activity in the soils in 26 provinces of China. Based on the data extracted from the papers and acquired from the online database, a Soil Nitrification Information System (SNIS), was constructed. The system covers data, like sample locations, soil properties (including pH, total nitrogen, nitrate nitrogen, organic carbon, available phosphorous, clay content, etc.) and nitrification activity. Nitrification activity was assessed by three parameters including net nitrification rate, potential nitrification rate and gross nitrification rate using the conventional analytical methods. One-way analysis of variance (ANOVA) and the least significant difference test (LSD) were employed to explore difference in nitrification activity between different ecosystems, that is, farmland, grassland, forest land, desert and wetland. Pearson correlation analysis was employed to reveal relationships between soil properties and nitrification activity. Single factor models were used to estimate correlation coefficients between nitrification activity and soil properties. Net nitrification rate varied with the ecosystem, displaying a decreasing order of from farmland (NO_3~--N 1.390.27 mg kg ~(-1) d ~(-1)) > grassland (0.740.17) > forest (0.660.16) > desert (0.170.08) > wetland (0.060.04). The net nitrification rate of the farmland ecosystem is significantly higher than those of the others. In terms of potential nitrification rate, grassland (7.413.73) ranks first among the five ecosystem and was followed by farmland (4.970.43), forest (1.060.24) and the other two, showing differences significant on a 0.05 level, while in terms of gross nitrification rate, forest land (7.760.43) did first and was followed by farmland (5.720.86), grassland (5.251.76) and the others. Pearson correlation analysis shows that in the farmland ecosystem, net nitrification rate was closely related to soil nitrate nitrogen and available phosphorous, and potential nitrification rate to soil pH, nitrate nitrogen, organic carbon and available phosphorous, while in the forest ecosystem, net nitrification rate was to soil available nitrogen and carbon-nitrogen ratio. Statistic analysis demonstrates that on the national scale, nitrification activity varied significantly between the ecosystems and nitrification rate was significantly lower in natural ecosystems than in anthropogenic ecosystems, and soil pH and nitrate nitrogen concentration appeared to be good indicators of soil nitrification activity in these ecosystems.
中文关键词	中国土壤 ; 典型生态系统 ; 整合分析 ; 硝化速率 ; 硝化潜力
英文关键词	Chinese soil Typical ecosysterm Meta-analysis Nitrification rate Potential nitriyication rate
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:5292742
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231855
作者单位	中国科学院南京土壤研究所, 南京, 江苏 210008, 中国
推荐引用方式 GB/T 7714	郭志英,贾仲君. 中国典型生态系统土壤硝化强度的整合分析[J],2014,51(6):1317-1324.
APA	郭志英,&贾仲君.(2014).中国典型生态系统土壤硝化强度的整合分析.土壤学报,51(6),1317-1324.
MLA	郭志英,et al."中国典型生态系统土壤硝化强度的整合分析".土壤学报 51.6(2014):1317-1324.