作 者：
袁宏波;刘淑娟;安富博;胥宝一;郭春秀;杜娟
关键词：
人工输水;青土湖;白刺灌丛沙堆;土壤养分
摘 要：
为了探讨人工输水影响下青土湖白刺灌丛沙堆土壤养分的空间分布特征,对距水面不同距离、不同土层的白刺灌丛沙堆土壤有机质、全氮、全磷、全钾、速效氮、速效磷、速效钾、pH和电导率进行了观测研究。结果表明,由于水面形成干扰,土壤溶液电导率、全氮、速效钾、全钾、速效磷、全磷、有机质在距水面50m和250m处达到最大值,较平地距水面距离的各养分最大值向水缘推近了50m;白刺灌丛沙堆不同土层的土壤养分含量变化明显,总体上是表层的养分最高,并呈现随土层深度增加而减小趋势,但差异不显著(P>0.05);青土湖水面的形成,使白刺灌丛沙堆土壤养分上移在土壤表层聚集;土壤有机质与全氮、全磷、速效钾、电导率间呈显著正相关;电导率和全氮、全磷、速效钾间呈极显著正相关。
译 名：
Effects of Environmental Friendly Water Transfer on Soil Nutrients of Nitraria tangutorum nebkhas in Qingtu Lake
作 者：
YUAN Hong-bo;LIU Shu-juan;AN Fu-bo;XU Bao-yi;GUO Chun-xiu;DU Juan;Gansu Desert Control Research Institute;
关键词：
artificial water transfer;;Qingtu Lake;;Nitraria tangutorum nebkhas;;soil nutrient
摘 要：
In order to study the spatial distribution characteristics of soil nutrients under the influence of artificial water transfer,the soil organic matter,total nitrogen(TN),total phosphorus(TP),total potassium(TK),available N,available P,available K,pH and electrical conductivity(EC)were observed and studied at different distances from the water surface and different soil layers in Qingtu Lake.The results showed that the electrical conductivity(EC),total nitrogen(TN),available K,total potassium(TK),available phosphorus(TP),total phosphorus(TP)and organic matter of soil solution reached their maximum values at 50 m and 250 m from the water surface,and the maximum values of soil nutrients were pushed closer to the water edge than those of flat land(50 m forward).As a whole,the nutrients in the surface layer were the highest,and decreased with the increase of soil depth,but the difference was not significant(P>0.05);the formation of Qingtu Lake water surface made the soil nutrients of Nitraria tangutorum nebkhas move up and accumulate in the surface layer of the soil.The soil organic matter was positively correlated with total nitrogen(TN),total phosphorus(TP),available potassium(TK)and electrical conductivity(EC);electrical conductivity(EC)was positively correlated with total nitrogen(TN),total phosphorus(TP)and available potassium(K).
