典型黑土区坡耕地土壤碱性磷酸酶和有机质空间分布研究  

Spatial Distribution of Soil Alkaline Phosphatase Activity and Soil Organic Matter on Sloping Farmlands in Typical Black Soil Region

作　　者：邢培茹 郑粉莉[1,2] 王彬[1] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨凌7121000 [2]中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100

出　　处：《水土保持研究》2014年第1期39-42,共4页Research of Soil and Water Conservation

基　　金：国家973计划项目(2007CB407201)

摘　　要：以东北黑土侵蚀严重区宾州河流域为研究区,通过采集流域上游、中游和下游6个典型坡面及各坡面不同坡位的土壤样品,分析坡耕地土壤碱性磷酸酶和土壤有机质在流域和坡面尺度的空间分布特征及其与土壤侵蚀的关系。结果表明,在流域尺度上,坡耕地土壤碱性磷酸酶活性和土壤有机质含量均表现为下游>中游>上游,坡面尺度上总体表现为坡面上部<坡面中部<坡面下部的趋势,且坡位对土壤有机质分布的影响较其对土壤碱性磷酸酶活性的影响更为明显。土壤碱性磷酸酶活性与土壤有机质间存在极显著的正相关关系。流域土壤碱性磷酸酶活性和有机质空间分布与土壤侵蚀空间分布相对应,反映出土壤侵蚀是影响该区耕层土壤碱性磷酸酶活性和土壤有机质含量的主要因素。Soil samp basin were collecte les in different positions of slope in the upper, m d to analyze the spatial distribution of soil alkaline well as effects of soil erosion on them. matter ranked as down stream）middle and soi down s The results showed that so stream〉upper stream at wat organic matter in the different slope ope, slope position played more impo ddle and down stream of Binzhou river phosphatase and soil organic matter, as 1 alkaline phosphatase and soil organic ershed scale. Soil alkaline phosphatase positions followed the order of top slope〈the middle sloped rtant role in the distribution of soil organic matter than that in soil alkaline phosphatase. There was a significant positive c soil organic matter. The spatial distribution of soil alkaline corresponding to soil erosion, suggesting that soil erosion w soil alkaline phosphatase and soil organic matter in Binzhou orrelation between soil alkaline phosphatase and phosphatase activity and soil organic matter was as the key factor governing spatial distribution of river basin.

关 键 词：典型黑土区坡耕地 土壤碱性磷酸酶 土壤有机质 土壤侵蚀 空间分布 

分 类 号：S158[农业科学—土壤学]