本文選題：木麻黃 + 純林　； 參考：《江西農(nóng)業(yè)大學(xué)學(xué)報(bào)》2017年03期

【摘要】：為揭示沿海地區(qū)木麻黃(Casuarina equisetifolia)防護(hù)林地的土壤酶活性與土壤養(yǎng)分含量的變化趨勢及其規(guī)律,以大鶴國有防護(hù)林地3種林齡(10 a、23 a、33 a生)的木麻黃純林為對象,研究不同林齡木麻黃純林土壤酶活性與土壤養(yǎng)分含量特征及其相互關(guān)系。結(jié)果表明:隨著林齡的增大,土壤脲酶、蔗糖酶、酸性磷酸酶、過氧化氫酶、多酚氧化酶的活性均呈現(xiàn)先增加后降低的趨勢,表現(xiàn)出23 a10 a33 a;土壤p H值呈現(xiàn)持續(xù)下降的趨勢,有機(jī)質(zhì)、全氮、水解氮、全磷、有效磷濃度均呈現(xiàn)先增加后降低的趨勢,全鉀、速效鉀含量變動小;土壤酶活性與土壤養(yǎng)分因子密切相關(guān),除過氧化氫酶外,其它幾種酶均與有機(jī)質(zhì)、全氮、水解氮、全磷、有效磷、全鉀、速效鉀存在顯著正相關(guān)關(guān)系,尤其脲酶、蔗糖酶、酸性磷酸酶與土壤養(yǎng)分因子之間呈極顯著關(guān)系。研究表明,土壤酶與土壤養(yǎng)分可以作為評價(jià)土壤肥力及土壤質(zhì)量的重要指標(biāo),在一定程度上反映林地地力和生產(chǎn)力的變化。
[Abstract]:In order to reveal the change trend and regularity of soil enzyme activity and soil nutrient content in Casuarina equisetifolia shelterbelt in coastal area, the pure Casuarina equisetifolia forest was studied.The relationship between soil enzyme activity and soil nutrient content in different stand ages of Casuarina equisetifolia was studied.The results showed that the activities of soil urease, sucrase, acid phosphatase, catalase and polyphenol oxidase increased first and then decreased with the increase of forest age, and the soil pH value continued to decrease.The concentrations of organic matter, total nitrogen, hydrolyzed nitrogen, total phosphorus and available phosphorus increased first and then decreased. The contents of total potassium and available potassium changed little, and soil enzyme activity was closely related to soil nutrient factors, except catalase.There were significant positive correlations between other enzymes and organic matter, total nitrogen, hydrolyzed nitrogen, total phosphorus, available phosphorus, total potassium, available potassium, especially urease, sucrase, acid phosphatase and soil nutrient factors.The results show that soil enzyme and soil nutrient can be used as important indexes to evaluate soil fertility and soil quality, and to some extent reflect the change of forest land fertility and productivity.
【作者單位】： 福建農(nóng)林大學(xué)林學(xué)院;福建省高校森林生態(tài)系統(tǒng)經(jīng)營與過程重點(diǎn)實(shí)驗(yàn)室;武夷學(xué)院生態(tài)與資源工程學(xué)院;
【基金】：福建省自然科學(xué)基金項(xiàng)目(2015J01607) 福建省科技廳重大專項(xiàng)項(xiàng)目(2012NZ01)~~
【分類號】：S714

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