本文選題：蘆葦濕地 + 沉積物　； 參考：《水土保持研究》2017年05期

【摘要】：以遼河河口蘆葦濕地為研究對(duì)象,對(duì)濕地土壤沉積物中有機(jī)質(zhì)含量的變化規(guī)律進(jìn)行研究,分別研究了濕地沉積物中有機(jī)質(zhì)(SOM)在時(shí)間、空間上的變化規(guī)律。結(jié)果表明:時(shí)間變化上,近河區(qū)和遠(yuǎn)河區(qū)的蘆葦濕地沉積物中SOM含量受時(shí)間影響顯著,其中在9月份和10月份SOM含量較高,9月份SOM含量出現(xiàn)最大值�？臻g變化上,縱向上只有表層0—10cm深度和其他深度(10—20cm,20—30cm,30—40cm,40—50cm)以及10—20cm與40—50cm深度的SOM含量上有顯著的差異,其他深度間差異并不明顯。遠(yuǎn)河區(qū)濕地沉積物在4月、5月、6月、9月、10月份時(shí),0—10cm和10—20cm深度的沉積物中SOM含量較高,最大值多數(shù)在0—10cm深度的沉積物上。在7月份和8月份時(shí),0—10cm深度沉積物的SOM含量最低。近河區(qū)濕地沉積物中SOM含量變化與遠(yuǎn)河區(qū)相比有差異,在4月、5月、6月、7月、8月份時(shí)受地表徑流影響較為明顯,SOM含量的最大值并不顯著,各深度間SOM含量相差不大,20—40cm深度的SOM含量略高。在9月、10月份,SOM最大值在0—10cm深度的沉積物上,其他深度SOM含量相差不大。并且縱向上各深度間的SOM含量存在著線性相關(guān)關(guān)系。橫向上在S1—3與S2—3位于緩沖區(qū)與試驗(yàn)區(qū)的交界處,SOM含量較高;S1—6與S2—6和S2—7位于緩沖區(qū)與核心區(qū)的交界附近且SOM含量較高,這些點(diǎn)的SOM含量均遠(yuǎn)高于其他各點(diǎn)的SOM含量。通過研究SOM含量的時(shí)空變化,更加清楚地認(rèn)識(shí)SOM的變化規(guī)律,為合理利用和開發(fā)蘆葦濕地以及控制濕地污染,探究碳儲(chǔ)量提供數(shù)據(jù)支持。
[Abstract]:Taking Reed wetland in Liaohe River estuary as the research object, the changes of organic matter content in wetland soil sediment were studied, and the time and space changes of organic matter SOM in wetland sediment were studied respectively. The results showed that the content of SOM in Reed wetland sediment near river and far river area was significantly affected by time, and the SOM content was higher in September and October than that in September and September, and the maximum SOM content appeared in September. In spatial variation, there are significant differences in SOM content between surface 0-10cm depth and other depth (10-20 cm ~ (20) ~ (30) cm ~ (30) ~ (30) cm ~ (30) ~ (40) cm ~ (50) and 10-20cm and 40-50cm depth in longitudinal direction, but there is no significant difference between other depths. In April, May, June, September and October, the concentration of SOM in the sediments of wetland sediments in the Yuanhe region was higher than that in the sediments with the depth of 10-20cm and 0-10 cm, and the maximum value was in the sediments of the depth of 0-10cm. In July and August, the SOM content of sediments with 0-10 cm depth was the lowest. The variation of SOM content in wetland sediment in the near river area was different from that in the far river area, and the maximum value of SOM content was not significant in April, May, June, July and August, which was affected by surface runoff. The content of SOM in the depth of 20-40 cm was slightly higher than that in the depth of 20 ~ 40 cm. In September and October, the maximum value of SOM in the sediments of 0-10cm depth was similar to that in other depths. And there is a linear correlation between the depth of SOM content in longitudinal. Horizontally, S1-3 and S2-3 are located at the junction of buffer zone and experimental area. S1-6, S2-6 and S2-7 are located near the junction of buffer zone and core area, and SOM content is higher. The SOM content of these points was much higher than that of other points. By studying the temporal and spatial variation of SOM content, we can clearly understand the change law of SOM, and provide data support for rational utilization and development of Reed wetland, control of wetland pollution and exploration of carbon storage.
【作者單位】： 沈陽農(nóng)業(yè)大學(xué)水利學(xué)院;遼寧環(huán)境監(jiān)測試驗(yàn)中心;
【基金】：國家自然科學(xué)資助項(xiàng)目(31200392) 遼寧省農(nóng)業(yè)領(lǐng)域青年科技創(chuàng)新人才項(xiàng)目(2015048)
【分類號(hào)】：S153.62

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