【摘要】：以秦嶺典型林地土壤為對(duì)象,分析了夏、秋兩季銳齒櫟、油松、華山松、云杉4種典型林分下林地不同土層土壤的生態(tài)化學(xué)計(jì)量學(xué)特征。結(jié)果表明:5個(gè)林地腐殖質(zhì)層(O層)、表層(A層)土壤有機(jī)碳含量分別在76.23~260.70,26.60~44.81g/kg之間;全氮含量在4.19~8.76,1.46~3.29g/kg之間;全磷含量分別在0.38~0.61,0.33~0.63g/kg之間。5個(gè)林地O層、A層C/N范圍分別為16.48~29.76,12.31~19.39;C/P范圍分別為144.93~465.52,44.63~107.42;N/P范圍分別為7.97~18.37,2.58~6.23。土壤有機(jī)碳和全氮及C/N,C/P,N/P均表現(xiàn)為O層大于A層,且O層碳氮含量動(dòng)態(tài)變化較大。闊葉林地土層間差異小于針葉林地。華山松林地土壤碳氮磷含量及C/N、C/P均高于其他林地。土壤C/P和N/P的空間變異性較大,C/N相對(duì)穩(wěn)定。土壤碳氮磷含量及化學(xué)計(jì)量比值大多表現(xiàn)為夏季高于秋季。
[Abstract]:Taking the soil of typical forest land in Qinling Mountains as the object, the ecological chemometrics characteristics of soil in different soil layers of forest land under four typical stands of Quercus acutissima, Pinus tabulaeformis, Pinus tabulaeformis and spruce in summer and autumn were analyzed. The results showed that the contents of soil organic carbon, total nitrogen, total phosphorus and total phosphorus in the humus layer (O layer) and surface layer (A layer) were 76.23 260.70, 26.60 4.81 g / kg, 4.19 8.76 g / kg, 1.46 3.29 g / kg, 0.38% 0.61 g / kg, 0.33 0.63 g / kg, 16.48% 29.76 g / kg and 12.31 19.39 g / kg, respectively. the content of total phosphorus was 0.38 0.61 g / kg, 0.33 0.63 g / kg, 16.48% 29.76 g / kg, 12.31% 19.39 g / kg, 16.48 g / kg and 12.31 g / kg, respectively, and the total phosphorus content was 0.38% 0.61 g / kg and 0.33 g / kg, respectively. The C and P ranges were 144.93 465.52, 44.63 107.42 N and 7.97 18.37 and 2.58 6.23, respectively. Soil organic carbon, total nitrogen and C 鈮，

本文編號(hào)：2504552