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三江平原草甸白浆土P、K养分含量特征及影响因素
引用本文:何太蓉,李贤良,杨达源,杨永兴.三江平原草甸白浆土P、K养分含量特征及影响因素[J].环境科学,2004,25(1):133-137.
作者姓名:何太蓉  李贤良  杨达源  杨永兴
作者单位:1. 南京大学城市与资源学系,南京,210093;重庆师范大学地理系,重庆,400047
2. 中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085
3. 南京大学城市与资源学系,南京,210093
4. 同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海,200092
基金项目:国家自然科学基金资助项目(49771002);中国科学院长春地理研究所所长基金资助项目(1997年度)
摘    要:在三江平原湿地植物生长季节期内,选择具有代表性的小叶章湿地发育的草甸白浆土为研究对象,逐月分层采集土样,测定其P、K含量.在此基础上借助SPSS软件和灰色关联分析技术,探讨了草甸白浆土中P、K含量的分布特征及相关环境因子对P、K含量动态变化的影响.结果表明:草甸白浆土中P、K含量在剖面垂直方向具有明显的分层现象,P、K分布与土层的相关性均较好,相关系数均在0.94以上.此外,草甸白浆土各土层P、K含量在植物生长季节均呈明显的动态变化,用一元三次非线性回归模型可得到较理想的拟合结果.同一环境因子对草甸白浆土各土层中全P、全K、速效P及速效K的动态分布影响程度不同;不同环境因子对同一土层中P、K的动态分布影响程度更不同.降水量在所有环境因子中影响程度最大,且土壤表层受环境因子的影响较底部土层敏感.

关 键 词:营养元素(P、K)  含量  环境影响因子  草甸白浆土  三江平原
文章编号:0250-3301(2004)01-0133-05
收稿时间:2003/2/28 0:00:00
修稿时间:7/2/2003 12:00:00 AM

The P and K Concentration Characteristics and Their Effect Factors in the Meadow Albic Bleached Soil in the Sanjiang Plain
HE Tai-rong,LI Xian-liang,YANG Da-yuan and YANG Yong-xing.The P and K Concentration Characteristics and Their Effect Factors in the Meadow Albic Bleached Soil in the Sanjiang Plain[J].Chinese Journal of Environmental Science,2004,25(1):133-137.
Authors:HE Tai-rong  LI Xian-liang  YANG Da-yuan and YANG Yong-xing
Institution:Department of Urban and Resources Sciences, Nanjing University, Nanjing 210093, China. he_trong@263.net
Abstract:During the growth season of wetland plant in the Sanjiang Plain, the representative meadow albic bleached soil developed in the Deyeuxia angustifolia wetland was chosen as the study objects, soil was sampled by soil layer monthly, their P and K concentration and correlative environmental factors were measured synchronously. Based on these data, with SPSS software and grey relating analyse means, this paper discussed the P and K concentration characteristics and their effect degree in the meadow albic bleached soil. The results were as following: The P and K concentration has obvious layered phenomenon in the soil profile, the correlations between P and K concentration and soil layer are remarkable, all their correlation coefficients are above 0.94. The P and K concentrations of every soil layer have an obvious seasonal dynamics in plant growth season. Their one-factor non-linear regression simulation models are suitable. The same environmental factor's affection degrees on the total P, total K, rapidly available P and rapidly available K of same layer or different layer are not same. Different environmental factor's affection degrees on same object are different also. Rainfall has the biggest affection degree in all environmental factors. The surface soil layer is more sensitive than bottom soil layer in the affection degree of environmental factors.
Keywords:nutrient element (P and K)  concentration  environmental factor  the meadow albic bleached soil  the Sanjiang Plain
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