本文選題：土壤碳氮磷計量比　切入點：時空變化格局　出處：《應(yīng)用與環(huán)境生物學(xué)報》2017年02期 　論文類型：期刊論文

【摘要】：土壤碳氮磷化學(xué)計量比(C:N:P)可以反映有機(jī)質(zhì)質(zhì)量和含量,其研究對于理解生態(tài)學(xué)過程和生態(tài)系統(tǒng)對氣候變化與干擾的響應(yīng)十分重要.綜述了土壤C:N:P隨土層深度、海拔、緯度和演替梯度上的時空變化格局及其影響因素:土壤N:P和C:P隨土壤深度而遞減,但土壤C:N隨土層深度的變化趨勢還有爭論;土壤C:N隨海拔變化并非呈現(xiàn)簡單的線性關(guān)系而是復(fù)雜多變的;在全球和區(qū)域尺度上,土壤C:N隨緯度增加而增大,而土壤C:P則減小;在演替過程中,受到所選擇的演替階段及其時間序列范圍和環(huán)境特征等因素影響,土壤C:N:P的演替變化趨勢存在明顯的爭論.綜合分析表明:1)對土壤C:N關(guān)注多,而N:P與C:P研究較貧乏;2)土壤C:N:P的時空變化格局規(guī)律還不完全清楚;3)土壤C:N:P受氣候、土壤、植被以及人為活動的影響是清楚的,但其機(jī)制并不清楚.因此,未來需要更多地聚焦土壤N:P與C:P的變化格局規(guī)律,關(guān)注土壤C:N:P變異的多種(生物、物理與化學(xué))作用機(jī)制研究及其與生態(tài)系統(tǒng)結(jié)構(gòu)和功能動態(tài)變化的關(guān)系,并通過整合植物-凋落物-土壤系統(tǒng)的化學(xué)計量學(xué)研究,為深入揭示營養(yǎng)元素的生物化學(xué)耦合循環(huán)規(guī)律提供新證據(jù).
[Abstract]:Soil carbon, nitrogen and phosphorus stoichiometry can reflect the quality and content of organic matter, and its research is very important to understand the ecological process and ecosystem response to climate change and disturbance. Temporal and spatial patterns of latitude and succession gradient and their influencing factors: soil N: P and C: P decreased with soil depth, but the variation trend of soil C _ (1) N with soil depth was controversial. The variation of soil C: n with altitude is not simple linear, but complex. At global and regional scales, soil C: n increases with the increase of latitude, while soil C: P decreases. Influenced by the selected succession stage, the range of time series and the environmental characteristics, the succession trend of soil C: n: P is obviously disputed. The comprehensive analysis shows that: 1) more attention is paid to soil C: n. But the temporal and spatial patterns of soil C: n: P are not completely clear.) the effects of climate, soil, vegetation and human activities on soil C: n: P are clear, but the mechanism is not clear. In the future, more attention should be paid to the pattern of soil N: P and C: P, and to the study of the interaction mechanism (biological, physical and chemical) of soil C: n: P variation and its relationship with the dynamic changes of ecosystem structure and function. By integrating the chemometrics of plant-litter-soil system, this paper provides new evidence for revealing the biochemically coupled cycle of nutrient elements.
【作者單位】： 中國科學(xué)院山地生態(tài)恢復(fù)與生物資源利用重點實驗室生態(tài)恢復(fù)與生物多樣性保育四川省重點實驗室中國科學(xué)院成都生物研究所;中國科學(xué)院大學(xué);
【基金】：國家自然科學(xué)基金項目(31470023)資助~~
【分類號】：S153

【相似文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 王玉東;人為干擾對黃帝陵古柏土壤理化性質(zhì)影響的研究[D];西北農(nóng)林科技大學(xué);2015年

，

本文編號：1614156