| 宁夏盐池草地典型群落枯落物与土壤和水热的关系 |
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| 引用本文： | 马琳,李学斌,谢应忠.宁夏盐池草地典型群落枯落物与土壤和水热的关系[J].草业科学,2011,28(6):898-901. |
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| 作者姓名： | 马琳 李学斌 谢应忠 |
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| 作者单位： | 西北退化生态系统恢复与重建教育部重点实验室宁夏大学,宁夏银川,750021;西北退化生态系统恢复与重建教育部重点实验室宁夏大学,宁夏银川,750021;西北退化生态系统恢复与重建教育部重点实验室宁夏大学,宁夏银川,750021 |
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| 基金项目： | 国家重大基础研究前期研究专项(2010CB434800); 宁夏自然科学基金项目(NZ1017); 宁夏大学自然科学基金项目(NDZR10-63) |
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| 摘 要： | 摘要：利用原位观测法及分解袋埋放法对宁夏盐池县草地生态系统典型群落枯落物进行研究，得到以下结果，1）试验地冰草（Agropyron cristatum）、甘草（Glycyrrhiza uralensis）、沙蒿(Artemisia desertorum)、赖草(Leymus secalinus)枯落物蓄积月动态与月降水量、均温没有显著相关性，4种枯落物蓄积量10月达最大值，且月波动变异系数较高，为71.77%~107.91%；2）各典型群落枯落物含水量与土壤含水量呈显著正相关（P<0.05）；3）各典型群落枯落物的分解能引起土壤有机质、全氮、碱解氮、速效磷、速效钾的变化，但是对土壤全磷、全钾的影响不明显。
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| 关 键 词： | 草地生态系统 枯落物 蓄积 分解 养分 |
The relationship between litter and soil and hydro-thermal conditions of typical communities of grassland in Yanchi,Ningxia |
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| MA Lin,LI Xue-bin,XIE Ying-zhong.The relationship between litter and soil and hydro-thermal conditions of typical communities of grassland in Yanchi,Ningxia[J].Pratacultural Science,2011,28(6):898-901. |
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| Authors: | MA Lin LI Xue-bin XIE Ying-zhong |
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| Institution: | MA Lin,LI Xue-bin,XIE Ying-zhong(Northwest Land Degradation and Ecological Restoration the Growing Base for State Key Laboratory,Ningxia University,Ningxia Yinchuan 750021,China) |
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| Abstract: | The litter in typical communities of grassland in Yanchi,Ningxia were studied by using set sample in situ and litterbags method,the results showed:(1) Monthly litterfall of Agropyron cristatum,Glycyrrhiza uralensi,Artemisia desertorum and Leymus secalinus showed no significant correlation with monthly precipitation and mean temperature.The litterfall amount varied much among months and the variation coefficient ranged from 71.77% to 107.91%.For 4 species,litter amount all peaked at October.(2) There was a p... |
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| Keywords: | grassland ecosystem litter accumulation decomposition nutrient |
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