本文選題：闊葉紅松林 + 演替系列�。� 參考：《林業(yè)科學(xué)》2017年09期

【摘要】：【目的】了解中國小興安嶺闊葉紅松不同演替系列土壤有機(jī)碳庫和各組分的積累及分配特征,準(zhǔn)確評價森林生態(tài)系統(tǒng)碳儲量,為科學(xué)評價小興安嶺闊葉紅松林土壤固碳功能和固碳潛力提供理論依據(jù)。【方法】以闊葉紅松林不同演替系列(中生系列、旱生系列、濕生系列)的典型群落為研究對象,采用空間代替時間的方法,研究闊葉紅松林不同演替系列土壤總有機(jī)碳、易氧化有機(jī)碳、惰性有機(jī)碳、礦化碳、可溶性有機(jī)碳含量,探討有機(jī)碳各組分對總有機(jī)碳的貢獻(xiàn)率,分析調(diào)控土壤有機(jī)碳及各組分的影響因子�！窘Y(jié)果】小興安嶺闊葉紅松林不同演替系列土壤總有機(jī)碳含量表現(xiàn)為濕生旱生中生;闊葉紅松林不同演替系列土壤總有機(jī)碳表現(xiàn)為隨土壤剖面的加深而減少的趨勢,即40~60 cm土層20~40 cm土層10~20 cm土層0~10 cm土層;中生、濕生和旱生演替系列土壤惰性碳占總有機(jī)碳比例分別為34.42%,13.27%和12.17%,可中生、濕生和旱生演替系列溶性有機(jī)碳占總有機(jī)碳比例分別為0.09%,0.07%和0.08%,旱生、中生和濕生演替系列易氧化有機(jī)碳占總有機(jī)碳比例分別為33.59%,65.18%和54.53%,濕生、中生和旱生演替系列礦化碳占總有機(jī)碳比例分別為0.58%,0.53%和0.37%;總有機(jī)碳含量與礦化碳含量、易氧化有機(jī)碳含量和惰性碳含量極顯著正相關(guān)(P0.01),惰性碳含量與礦化碳含量和可溶性有機(jī)碳含量極顯著正相關(guān)(P0.01),與易氧化有機(jī)碳含量顯著負(fù)相關(guān)(P0.05);不同演替系列土壤有機(jī)碳含量及各組分含量影響因子各不相同,總有機(jī)碳含量與土壤全氮含量極顯著正相關(guān)(P0.01),惰性碳含量與土壤全氮含量顯著正相關(guān)(P0.01),與沙粒比極顯著負(fù)相關(guān)(P0.01),礦化碳含量與土壤酸堿度極顯著負(fù)相關(guān),與凋落物現(xiàn)存量和土壤含水率極顯著正相關(guān)(P0.01)。【結(jié)論】小興安嶺闊葉紅松林不同演替系列土壤碳庫及各組分動態(tài)特征存在顯著差異。群落演替時間及土壤理化性質(zhì)是導(dǎo)致有機(jī)碳及各組分特征不同的主要原因。
[Abstract]:[objective] to understand the accumulation and distribution characteristics of soil organic carbon pool and components in different succession series of broadleaved Korean pine (Pinus koraiensis) in Xiaoxinganling, China, and to evaluate accurately the carbon storage in forest ecosystem. To provide theoretical basis for scientific evaluation of soil carbon sequestration function and carbon sequestration potential of broadleaved Korean pine forest in Xiaoxinganling. [methods] typical communities of different succession series (mesophytic series, xerophytic series, wet series) of broadleaved Korean pine forest were studied. The contents of soil total organic carbon, easily oxidized organic carbon, inert organic carbon, mineralized carbon, soluble organic carbon in different succession series of broad-leaved Korean pine forest were studied by the method of space instead of time, and the contribution rate of organic carbon components to total organic carbon was discussed. The factors affecting soil organic carbon and its components were analyzed. [results] the contents of soil total organic carbon in different succession series of broad-leaved Korean pine forest in Xiaoxinganling were mesophytic and mesophytic. The soil total organic carbon (TOC) of different succession series of broadleaved Korean pine forest showed a decreasing trend with the deepening of soil profile, that is, 40 ~ 60 cm soil layer, 20 ~ 40 cm soil layer, 10 ~ 20 cm soil layer, 0 ~ 10 cm soil layer, The ratio of soil inert carbon to total organic carbon was 34.422.22% and 12.17%, respectively. The ratio of soluble organic carbon to total organic carbon was 0.09% and 0.08%, respectively. The ratios of oxidized organic carbon in mesogenic succession series to total organic carbon were 33.595.18% and 54.53%, respectively. The ratios of mineralized carbon to total organic carbon in wet, mesogenic and xerophytic succession series were 0.580.53% and 0.37%, respectively. The contents of easily oxidized organic carbon and inert carbon were significantly positively correlated with the contents of mineralized carbon and soluble organic carbon, and negatively correlated with the content of easily oxidized organic carbon. The content of organic carbon in soil and the influencing factors of each component content are different. Total organic carbon content was significantly positively correlated with soil total nitrogen content, inert carbon content was significantly positively correlated with soil total nitrogen content, and significantly negative correlation was found between total organic carbon content and soil total nitrogen content, and significant negative correlation was found between total organic carbon content and soil total nitrogen content, and significant negative correlation was found between total organic carbon content and soil total nitrogen content, and significant negative correlation between total organic carbon content and soil total nitrogen content and soil pH. There was a significant positive correlation between soil carbon pool and soil moisture content. [conclusion] there were significant differences in soil carbon pool and components in different succession series of Pinus koraiensis forest in Xiaoxinganling. Community succession time and physical and chemical properties of soil were the main reasons for the different characteristics of organic carbon and its components.
【作者單位】： 東北林業(yè)大學(xué)森林植物生態(tài)學(xué)教育部重點實驗室;黑龍江省林業(yè)科學(xué)研究所;黑龍江省林業(yè)科學(xué)院;
【基金】：國家自然科學(xué)基金項目(31270494,31600485) 黑龍江省林業(yè)科學(xué)院基金(201403)
【分類號】：S714
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本文編號：2020037