滨海苹果园土壤碳氮空间分布及动态变化研究
其他题名Spatial Distribution and Dynamics of Soil Organic Carbon and Total Nitrogen in Apple Orchards in Coastal Regions
付传城; 章海波; 涂晨; 李连祯; 周倩; 李远; 骆永明
发表期刊土壤学报
ISSN0564-3929
2018
卷号55期号:4页码:857-867
关键词滨海苹果园土壤有机碳全氮空间分布种植年限
研究领域农业基础科学
DOI10.11766/trxb201711190549
产权排序1
作者部门海岸带环境过程实验室
英文摘要【Objective】Soil organic carbon (SOC) and soil total nitrogen (STN) are two key indicators of soil fertility and quality, and closely related to soil productivities of farmlands and orchards. As the largest apple producer in the world, China has orchards distributed in all the corners of the country across different climate zones,in a huge variety of soils and under different management practices. Therefore, the orchards vary sharply in spatio-temporal distribution of soil C and N between different regions. However, as for spatial distribution and dynamics of SOC and STN in the apple orchards of the coastal regions, little system study has been made and little is known about differences and commons between the orchards in inland and coastal regions.In order to optimize management of the orchards, spatial distribution and dynamics of contents and densities of SOC and STN in large-scale apple orchards typical of the coastal region were studied.【Method】A total of 488 soil samples were collected from the surface soil layers of apple orchards differentin age in Jiaodong, Shandong Province, East China for analysis of SOC, STN, SOCD (soil organic carbon density), STND (soil total N density), spatial distribution of C/N ratios, and their dynamics and affecting factors.【Result】Results show that the average SOC and STN content in the orchards of that region was 10.80 and 1.42 g kg~(-1),respectively, the average SOCD and STND was 2.81 and 0.37 kg m~(-2), respectively, and the average soil C/N ratio was 7.70. Compared with the inland apple orchards located inWest Liaoning, suburbs of Beijing, Weibei of Shaanxi and Ili of Xinjiang,the apple orchardsin Jiaodong were generally higher in SOC and STN, but lower in C/N ratio. The apple orchards in Jiaodong are often located in temperate humid hilly areas, quite loose in soil texture, and enjoy rich hydrothermal resources, endowed by the maritime climate of the Yellow Sea. All the natural conditions, generally speaking, are favorable to accumulation of soil carbon and nitrogen. The Nugget/Sill ratio of SOC, STN, SOCD, STND and C/N was 0.432, 0.340, 0.420, 0.387 and 0.301, respectively, indicating that the spatial heterogeneityis moderate in level, as affected jointly by structural and stochastic factors in the area. The conclusion is quite consistent with that of the researches on SOC and STN in inland orchards. With the orchards established, SOC and STN appeared to be on a rising trend, but after 30 years of cultivation, SOC began to decline, while STNkept on rising, though at a slower pace. SOC and STN did not synchronize in accumulation, with C/N ratio declining first, then rising and declining again. SOC and STN in the apple orchards of Jiaodong were also affected by soil type, which is determined by its parent material and inherits certain properties of its parent materials. Moreover, the distribution of soils has its zonality, which also makes the orchards in Jiaodong different from the inland ones in SOC and STN. Terrain is only a minor factor affecting SOC and STN in the orchards of Jiaodong, which is mainly because the orchards there sit mainly on low hills and mounds, low in undulation and soil water loss. But the strong soil acidification in the orchards of Jiaodong may affect the activity of soil microbes, and in turn, the cycling of soil C and N. However, in inland orchards the soils are mostly alkaline ones, which have strong acid buffering capacity, so the impact of soil acidification is insignificant therein.【Conclusion】The apple orchardsin Jiaodong are generally high in carbon and nitrogen content and hence soil fertility and they have their own especific characteristics of spatio-temporal variation, and much higher soil C and N turnover rates and more dramatic dynamic variation, compared with inland orchards.
中文摘要土壤有机碳(SOC)和土壤全氮(STN)是土壤肥力和土壤质量的重要组成部分,对维持农田和果园生产力至关重要。以我国典型温带滨海果园—胶东苹果园为对象,采集了不同种植年限果园的488件表层土壤样品,探讨滨海果园SOC、STN含量和密度(SOCD、STND)及碳氮比(C/N)的空间分布、动态变化及其影响因素,为滨海地区及我国苹果园的生产、管理提供基础数据和科学依据。结果表明:胶东苹果园SOC和STN平均含量为10.78和1.42 g kg~(-1),平均密度为2.81和0.37 kg m~(-2),平均C/N为7.70;苹果园SOC、STN、SOCD、STND和C/N块基比分别为0.432、0.340、0.420、0.387和0.391,均表现出中等强度的空间异质性。苹果园SOC、STN和C/N的时空分布受种植年限影响显著。随种植年限延长,SOC呈先增加、再下降的趋势,而STN持续增加,相应地C/N呈先降、后增加再降的趋势。土壤类型、地形条件和土壤酸化对胶东果园碳氮均有不同程度的影响。相对于内陆地区的辽宁西部、北京郊区、陕西渭北和新疆伊犁等地果园,山东胶东滨海苹果园SOC、STN含量和密度较高,C/N偏低,具有较快的周转速度和自身的时空变化特征。
收录类别CSCD
语种中文
CSCD记录号CSCD:6305743
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24162
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
通讯作者骆永明推荐引用方式
GB/T 7714付传城,章海波,涂晨,等. 滨海苹果园土壤碳氮空间分布及动态变化研究[J]. 土壤学报,2018,55(4):857-867.
APA付传城.,章海波.,涂晨.,李连祯.,周倩.,...&骆永明.(2018).滨海苹果园土壤碳氮空间分布及动态变化研究.土壤学报,55(4),857-867.
MLA付传城,et al."滨海苹果园土壤碳氮空间分布及动态变化研究".土壤学报 55.4(2018):857-867.
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滨海苹果园土壤碳氮空间分布及动态变化研究
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