卓志清,李勇,兴安,曹梦,黄元仿,赵云泽.东北旱作区土壤碳氮磷生态化学计量特征及其影响因素[J].农业机械学报,2019,50(10):259-268,336.
ZHUO Zhiqing,LI Yong,XING An,CAO Meng,HUANG Yuanfang,ZHAO Yunze.Characteristic of Ecological Stoichiometry of Soil C, N and P and Its Influencing Factors in Dry Farming Region of Northeast China[J].Transactions of the Chinese Society for Agricultural Machinery,2019,50(10):259-268,336.
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东北旱作区土壤碳氮磷生态化学计量特征及其影响因素   [下载全文]
Characteristic of Ecological Stoichiometry of Soil C, N and P and Its Influencing Factors in Dry Farming Region of Northeast China   [Download Pdf][in English]
投稿时间:2019-03-16  
DOI:10.6041/j.issn.1000-1298.2019.10.030
中文关键词:  旱作区  生态化学计量  冗余分析  耕层
基金项目:国家重点研发计划项目(2016YFD0300801)和国家自然科学基金项目(41571217)
作者单位
卓志清 中国农业大学 
李勇 中国农业大学 
兴安 中国农业大学 
曹梦 中国农业大学 
黄元仿 中国农业大学
自然资源部农用地质量与监控重点实验室 
赵云泽 中国农业大学 
中文摘要:为探究旱作农田土壤碳氮磷生态化学计量特征,基于2017年采集的132个耕层(0~20cm)土壤样品,运用地统计学和冗余分析等方法,分析了东北旱作区土壤碳氮磷生态化学计量特征的空间变异性及影响因素。结果表明:研究区土壤有机碳(SOC)、全氮(TN)、全磷(TP)的平均含量(质量比)分别为16.79、1.43、0.77g/kg,且彼此间存在显著正相关关系(P<0.05);土壤C/N、C/P、N/P质量比的平均值分别为11.45、22.82、2.03,均低于全国农田土壤平均值。从空间分布规律来看,SOC、TN、TP含量均呈现由西南向东北递增的趋势,高值区主要分布在黑龙江省旱作区北部,低值区在吉林省和辽宁省旱作区西部平原区。土壤C/N、C/P的高值区主要分布在黑龙江省旱作区,低值区位于吉林省和辽宁省旱作区连片分布,N/P则整体变化较小。研究区土壤碳氮磷生态化学计量特征受人为活动、环境及土壤性状的综合影响,化肥施用强度和土地利用强度是影响土壤碳氮磷生态化学计量特征的重要人为因素,土壤容重和含水率则是影响研究区土壤碳氮磷生态化学计量特征分布规律的主要环境因子。
ZHUO Zhiqing  LI Yong  XING An  CAO Meng  HUANG Yuanfang  ZHAO Yunze
China Agricultural University,China Agricultural University,China Agricultural University,China Agricultural University,China Agricultural University;Key Laboratory of Agricultural Land Quality, Ministry of Natural Resources and China Agricultural University
Key Words:dry farming region  ecological stoichiometry  redundancy analysis  plough horizon
Abstract:The eco stoichiometry of soil nutrients has been successfully used in indicating soil quality and revealing the circulation and balance mechanism, and the information about eco stoichiometry of soil carbon, nitrogen and phosphorus can help to conduct soil nutrient management. However, the soil stoichiometry characteristics in dry farming region are poorly documented. To explore the spatial distributions of soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP) and ecological stoichiometric characteristics of soil C, N and P in dry farming region of Northeast China,totally 132 topsoil samples (0~20cm) were collected in 2017, and SOC, TN, TP and other properties were analyzed in all samples. The spatial variability of eco stoichiometry of soil C, N and P and its influencing factors were analyzed by geostatistics and redundant analysis. The results showed that the mean content of SOC, TN and TP in the study area was 16.79g/kg, 1.43g/kg and 0.77g/kg, respectively; and soil C/N, C/P, N/P ratios were 11.45, 22.82 and 2.03, respectively. Correlation analysis of soil C, N and P showed that significant correlations were existed among C, N, and P (P<0.05). Soil C/N, C/P, N/P ratios were lower than their average value on a national scale. The distribution of soil SOC, TN and TP were increasing from southwest to northeast, with the high value areas mainly distributed in the northern part of the dry farming region of Heilongjiang Province, and the low value areas were in the dry farming region of Jilin and Liaoning Provinces. The high value areas of soil C/N and C/P were mainly distributed in the dry farming region of Heilongjiang Province, the low value region was located in the dry farming area of Jilin and Liaoning Provinces, and the spatial variation of N/P was small in the study area. The eco stoichiometric characteristics of soil C, N and P in the study area were affected by tillage and fertilization, environmental factors and soil properties. Intensity of chemical fertilizers application and land use was an important human factor affecting the eco stoichiometric of soil C, N and P. RDA indicated that soil bulk density and water content were the main soil physical and chemical factors affecting the eco stoichiometric characteristics of soil C, N and P in dry farming region of Northeast China.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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