【摘要】：【目的】研究山核桃產(chǎn)區(qū)林地土壤肥力質(zhì)量的時空演變規(guī)律及影響因素,為山核桃林地的土壤管理提供決策依據(jù)。【方法】基于地統(tǒng)計學(xué)方法和GIS技術(shù),采用系統(tǒng)抽樣法,在浙江省臨安市對比研究2008年(317個樣本)和2013年(239個樣本)山核桃林地表層(0~30 cm)土壤的p H值、有機碳含量、水解性氮含量、有效磷含量和速效鉀含量共5個肥力指標的時空變異特征及影響因素�！窘Y(jié)果】2008—2013年,山核桃林地土壤水解性氮和速效鉀含量顯著降低,分別下降19.4和55.6 mg·kg-1,p H值從5.5下降到5.3,有機碳含量下降0.2 g·kg-1,有效磷含量升高0.5 mg·kg-1;5個土壤肥力質(zhì)量指標的標準差變小,變異程度降低;土壤p H值、水解性氮和有效磷含量的空間自相關(guān)性減弱,自相關(guān)距離減小,而有機碳和速效鉀含量的空間分布連續(xù)性增強,自相關(guān)距離增加;海拔、母巖類型、不同鄉(xiāng)鎮(zhèn)的人為經(jīng)營對土壤p H值、水解性氮含量和速效鉀含量影響顯著(P0.1),海拔和人為經(jīng)營顯著影響著土壤有機碳含量(P0.1),土壤有效磷含量受人為經(jīng)營的影響顯著(P0.1);島石鎮(zhèn)土壤有機碳、水解性氮、有效磷和速效鉀含量降幅最大,p H值則以清涼峰鎮(zhèn)和島石鎮(zhèn)降低最多。【結(jié)論】2008—2013年,臨安市山核桃林地的土壤肥力水平總體有所下降;今后在山核桃林生產(chǎn)經(jīng)營中需推廣測土配方施肥,并通過施用一定量的石灰、林地生草管理和生態(tài)化采收等經(jīng)營管理技術(shù),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.
【作者單位】： 浙江農(nóng)林大學(xué)亞熱帶森林培育國家重點實驗室培育基地;浙江省長興縣木材檢查總站;浙江省臨安市林業(yè)局;杭州市林業(yè)科學(xué)研究院;
【基金】：浙江省農(nóng)業(yè)新品種選育重大科技專項(2012C12904) 國家自然科學(xué)基金項目(31170637) 國家高技術(shù)研究發(fā)展計劃863項目(2013AA102605) 國家星火計劃重點項目(2012GA700001)
【分類號】：S714.8

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