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| 荒漠河岸林胡杨养分状况研究 | |
| 引用本文： | 曹生奎,冯起,司建华,张秀风,刘蔚,常宗强.荒漠河岸林胡杨养分状况研究[J].中国沙漠,2011,31(5):1131-1140. |
| 作者姓名： | 曹生奎 冯起 司建华 张秀风 刘蔚 常宗强 |
| 作者单位： | 1. 青海师范大学生命与地理科学学院,青海西宁,810008 2. 中国科学院寒区旱区环境与工程研究所,甘肃兰州,730000 3. 阿拉善右旗雅布赖治沙站,内蒙古巴彦浩特,737300 |
| 基金项目： | 国家自然科学基金项目(40801001);国家自然科学基金重大研究计划(91025024); 国家自然科学基金委专项基金(4094007); 博士后面上基金(20080440393); 青海省科技厅项目(2011-2-743); 中国科学院“西部之光”项目资助 |
| 摘 要： | 对荒漠河岸林胡杨叶片有机碳(C)、全氮(N)、全磷(P)和全钾(K)等化学组分在生长季不同月份和不同微生境间的变化以及它们彼此间的相关性进行了研究。结果表明,胡杨叶片C,N,P和K的变化范围分别为39.08%～46.16%,0.28%～2.81%,0.05%～0.18%和0.35%～2.03%,平均值依次为43.51%,1.49%,0.102%和1.17%。叶片C/N,C/P和N/P的变化范围分别为16.26～146.61,258.08～908.67和2.89～26.67,平均值依次是37.24,466.27和15.14。叶片平均N含量显著低于全国落叶树平均N含量,P含量与全国落叶树的平均P含量较为接近。胡杨叶片C/N明显高于全球陆生植物的C/N比值；N/P比值说明胡杨生长受到氮和磷元素的共同限制。在生长季,胡杨叶片C、N、P和K含量总体表现为下降趋势,最高值出现在5月,最低值出现在9月；微生境间,C,N,K含量和N/P比值从河岸低地,河岸平地,河岸沙堆,戈壁到沙丘间逐渐升高；C/N趋势恰好相反,P含量没有太明显的变化。叶片C含量与N、K含量均呈极显著正相关,与P含量呈弱正相关,N-K和P-K均呈显著正相关。 |
| 关 键 词： | 养分 胡杨 荒漠河岸林 极端干旱区 |
| 收稿时间： | 2010-10-4 |
| 修稿时间： | 2011-1-29 |
Status of Foliar Nutrients in Populus euphratica Desert Riparian Forest in Northwestern China |
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| CAO Sheng-kui,FENG Qi,SI Jian-hua,ZHANG Xiu-feng,LIU Wei,CHANG Zong-qiang.Status of Foliar Nutrients in Populus euphratica Desert Riparian Forest in Northwestern China[J].Journal of Desert Research,2011,31(5):1131-1140. | |
| Authors: | CAO Sheng-kui FENG Qi SI Jian-hua ZHANG Xiu-feng LIU Wei CHANG Zong-qiang |
| Institution: | CAO Sheng-kui1,FENG Qi2,SI Jian-hua2,ZHANG Xiu-feng3,LIU Wei2,CHANG Zong-qiang2(1.School of Life and Geographical Sciences,Qinghai Normal University,Xining 810008,China,2.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,3.Desert Control Station of Yabulai of Alashan Right Banner,Bayanhot 737300,Inner Mongolia,China) |
| Abstract: | Contents of chemical constituents,namely organic carbon(C),total nitrogen(N),total phosphorus(P),total potassium(K),of Populus euphratica desert riparian forest in Ejina oasis of northwestern China were compared among different months in growing season and different micro-habitats,and the correlations among the chemical constituents were studied.Results showed that the ranges of C,N,P,and K contents in the leaves of P.euphratica were 39.08%~46.16%,0.28%~2.81%,0.05%~0.18%,and 0.35%~2.03%,and the mean values ... |
| Keywords: | nutrient Populus euphratica desert riparian forest extreme arid region |
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