本文選題：圍封 + 放牧　； 參考：《北方園藝》2017年01期

【摘要】：以寧夏鹽池典型荒漠草原為研究對象,選擇圍欄封育區(qū)和圍欄外放牧區(qū)的芨芨草群落和沙蒿群落,研究圍封與放牧區(qū)2種群落草地的含水量、pH及土壤理化性質的變化。結果表明:放牧干擾對荒漠草原土壤水分和pH均表現(xiàn)出顯著影響(P0.05),沙蒿群落土壤含水量各層在放牧干擾下比圍欄區(qū)相應高12.0%、12.3%和16.6%,芨芨草群落各層均表現(xiàn)為圍封區(qū)含水量大于放牧區(qū),放牧區(qū)土壤pH明顯低于圍封區(qū);除速效磷(AP)以外,其它養(yǎng)分元素含量均呈現(xiàn)為圍封區(qū)大于放牧區(qū),圍封內外土壤的有機碳(SOC)、全氮(TN)、速效氮(AN)、速效磷(AP)、速效鉀(AK)的達到差異顯著水平,對全磷(TP)、全鉀(TK)的影響不明顯;芨芨草群落各層土壤各指標含量均比沙蒿高,同時相對增幅也大。
[Abstract]:The typical desert steppe in Yanchi, Ningxia, was studied by selecting Achnatherum splendens community and Artemisia artemisia community in fenced and fenced grazing areas. The changes of water content, pH and soil physical and chemical properties of grassland in enclosed and grazing areas were studied. The results showed that grazing disturbance had a significant effect on soil moisture and pH in desert steppe. Soil water content in Artemisia annua community was 12.0% and 16.6% higher than that in fenced area under grazing disturbance. Each layer of Achnatherum splendens community was enclosed. Water content is higher than pastoral area, The soil pH in grazing area was significantly lower than that in enclosed area, except for available phosphorus (APP), the contents of other nutrient elements in enclosed area were higher than those in herding area. The soil organic carbon (SOC), total nitrogen (TNN), available nitrogen (ANN), available phosphorus (APN), available potassium (K) in the enclosed soil reached significant difference level, and the effect on total phosphorus TPN, total potassium TKK) was not obvious, and the content of soil indexes of Achnatherum splendens community was higher than that of Artemisia annua, and the content of soil indexes in each layer of Achnatherum splendens community was higher than that of Artemisia artemisia. At the same time, relative growth is also large.
【作者單位】： 寧夏大學西北退化生態(tài)系統(tǒng)恢復與重建教育部重點實驗室;寧夏大學西北土地退化與生態(tài)恢復省部共建國家重點實驗室培育基地;寧夏大學西部生態(tài)與生物資源開發(fā)聯(lián)合研究中心;寧夏大學科學技術處;
【基金】：國家自然科學基金資助項目(31460123,41101301,31260581) 教育部科學技術研究資助項目(413060)
【分類號】：S812

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