山核桃中心产区林地土壤肥力的时空变化特征
发布时间：2018-11-22 08:40
【摘要】：【目的】研究山核桃产区林地土壤肥力质量的时空演变规律及影响因素,为山核桃林地的土壤管理提供决策依据。【方法】基于地统计学方法和GIS技术,采用系统抽样法,在浙江省临安市对比研究2008年(317个样本)和2013年(239个样本)山核桃林地表层(0~30 cm)土壤的p H值、有机碳含量、水解性氮含量、有效磷含量和速效钾含量共5个肥力指标的时空变异特征及影响因素。【结果】2008—2013年,山核桃林地土壤水解性氮和速效钾含量显著降低,分别下降19.4和55.6 mg·kg-1,p H值从5.5下降到5.3,有机碳含量下降0.2 g·kg-1,有效磷含量升高0.5 mg·kg-1;5个土壤肥力质量指标的标准差变小,变异程度降低;土壤p H值、水解性氮和有效磷含量的空间自相关性减弱,自相关距离减小,而有机碳和速效钾含量的空间分布连续性增强,自相关距离增加;海拔、母岩类型、不同乡镇的人为经营对土壤p H值、水解性氮含量和速效钾含量影响显著(P0.1),海拔和人为经营显著影响着土壤有机碳含量(P0.1),土壤有效磷含量受人为经营的影响显著(P0.1);岛石镇土壤有机碳、水解性氮、有效磷和速效钾含量降幅最大,p H值则以清凉峰镇和岛石镇降低最多。【结论】2008—2013年,临安市山核桃林地的土壤肥力水平总体有所下降;今后在山核桃林生产经营中需推广测土配方施肥,并通过施用一定量的石灰、林地生草管理和生态化采收等经营管理技术,提高山核桃林地的土壤肥力。
[Abstract]:[objective] to study the temporal and spatial evolution of soil fertility quality in pecan forest land and its influencing factors, so as to provide decision basis for soil management of pecan forest land. [methods] based on geostatistics and GIS technique, systematic sampling method was used. The soil pH value, organic carbon content and hydrolytic nitrogen content in the topsoil of pecan forest land (0 ~ 30 cm) in 2008 (317 samples) and 2013 (239 samples) were studied in Linan City, Zhejiang Province. The temporal and spatial variability characteristics and influencing factors of available phosphorus and available potassium contents in five fertility indexes were analyzed. [results] during 2008 to 2013, the soil hydrolytic nitrogen and available potassium contents in pecan forest land decreased significantly. Decrease of 19.4 and 55.6 mg kg-1,p H from 5.5 to 5.3, decrease of organic carbon content by 0.2g kg-1, increase of available phosphorus content by 0.5 mg kg-1;, respectively The standard deviation of five soil fertility quality indexes decreased and the degree of variation decreased. The spatial autocorrelation and autocorrelation distance of soil pH, hydrolytic nitrogen and available phosphorus decreased, while the spatial distribution continuity of organic carbon and available potassium increased and the autocorrelation distance increased. Elevation, parent rock type, artificial management in different villages and towns had significant effects on soil pH, hydrolytic nitrogen content and available potassium content (P0.1), and elevation and artificial management had significant effects on soil organic carbon content (P0.1). The content of available phosphorus in soil was significantly affected by artificial management (P0.1). Soil organic carbon, hydrolytic nitrogen, available phosphorus and available potassium decreased the most in soil organic carbon, hydrolytic nitrogen, available phosphorus and available potassium in Dongshi town. [conclusion] from 2008 to 2013, the soil fertility level of walnut forest in Linan City decreased as a whole. In order to improve soil fertility of pecan forest, it is necessary to popularize soil formula fertilization in the production and management of pecan forest in the future, and to improve soil fertility by applying certain amount of lime, forestland grass management and ecological harvesting and other management techniques.
【作者单位】： 浙江农林大学亚热带森林培育国家重点实验室培育基地;浙江省长兴县木材检查总站;浙江省临安市林业局;杭州市林业科学研究院;
【基金】：浙江省农业新品种选育重大科技专项(2012C12904) 国家自然科学基金项目(31170637) 国家高技术研究发展计划863项目(2013AA102605) 国家星火计划重点项目(2012GA700001)
【分类号】：S714.8
本文编号：2348729
[Abstract]:[objective] to study the temporal and spatial evolution of soil fertility quality in pecan forest land and its influencing factors, so as to provide decision basis for soil management of pecan forest land. [methods] based on geostatistics and GIS technique, systematic sampling method was used. The soil pH value, organic carbon content and hydrolytic nitrogen content in the topsoil of pecan forest land (0 ~ 30 cm) in 2008 (317 samples) and 2013 (239 samples) were studied in Linan City, Zhejiang Province. The temporal and spatial variability characteristics and influencing factors of available phosphorus and available potassium contents in five fertility indexes were analyzed. [results] during 2008 to 2013, the soil hydrolytic nitrogen and available potassium contents in pecan forest land decreased significantly. Decrease of 19.4 and 55.6 mg kg-1,p H from 5.5 to 5.3, decrease of organic carbon content by 0.2g kg-1, increase of available phosphorus content by 0.5 mg kg-1;, respectively The standard deviation of five soil fertility quality indexes decreased and the degree of variation decreased. The spatial autocorrelation and autocorrelation distance of soil pH, hydrolytic nitrogen and available phosphorus decreased, while the spatial distribution continuity of organic carbon and available potassium increased and the autocorrelation distance increased. Elevation, parent rock type, artificial management in different villages and towns had significant effects on soil pH, hydrolytic nitrogen content and available potassium content (P0.1), and elevation and artificial management had significant effects on soil organic carbon content (P0.1). The content of available phosphorus in soil was significantly affected by artificial management (P0.1). Soil organic carbon, hydrolytic nitrogen, available phosphorus and available potassium decreased the most in soil organic carbon, hydrolytic nitrogen, available phosphorus and available potassium in Dongshi town. [conclusion] from 2008 to 2013, the soil fertility level of walnut forest in Linan City decreased as a whole. In order to improve soil fertility of pecan forest, it is necessary to popularize soil formula fertilization in the production and management of pecan forest in the future, and to improve soil fertility by applying certain amount of lime, forestland grass management and ecological harvesting and other management techniques.
【作者单位】： 浙江农林大学亚热带森林培育国家重点实验室培育基地;浙江省长兴县木材检查总站;浙江省临安市林业局;杭州市林业科学研究院;
【基金】：浙江省农业新品种选育重大科技专项(2012C12904) 国家自然科学基金项目(31170637) 国家高技术研究发展计划863项目(2013AA102605) 国家星火计划重点项目(2012GA700001)
【分类号】：S714.8
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