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| 北京密云油松人工林生态系统N、P、K养分循环 | |
| 引用本文： | 肖洋,陈丽华,余新晓,王小平,秦永胜,陈俊崎. 北京密云油松人工林生态系统N、P、K养分循环[J]. 北京林业大学学报, 2008, 0(Z2) |
| 作者姓名： | 肖洋 陈丽华 余新晓 王小平 秦永胜 陈俊崎 |
| 作者单位： | 北京林业大学水土保持与荒漠化防治教育部重点实验室;北京市园林绿化国际项目合作管理办公室; |
| 基金项目： | 北京市科委重大项目(D0706001000091); “十一五”国家科技支撑计划项目(2006BAD03A02) |
| 摘 要： | 对北京密云水库库西试验区的33年生油松人工林N、P、K养分循环进行了研究。结果表明:油松人工林不同器官中N、P、K含量顺序为针叶>树枝>树根>树干;油松人工林N、P、K的积累量分别为323.87、53.33、235.19kg/hm2;油松人工林凋落物中N、P、K的归还总量为18.00kg/(hm2.a),占归还总量的36.32%,降水中N、P、K的归还总量为31.56kg/(hm2.a),占归还总量的63.68%;油松人工林生态系统从土壤中吸收N、P、K的总量为126.58kg/(hm2.a),其中77.02kg/(hm2.a)存留于油松人工林中,49.56kg/(hm2.a)通过淋溶和凋落物归还土壤;油松人工林N、P、K的吸收系数为N>P>K,利用系数为N>K>P,循环系数为K>N>P,周转期为11.94、48.45、11.02年,富集系数为5.20、1.85、0.09。 |
| 关 键 词： | 油松 人工林 生态系统 养分循环 |
Nutrient cycling of N,P and K in a plantation ecosystem of Pinus tabulaeformis in Miyun District,Beijing |
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| XIAO Yang,CHEN Li-hua,YU Xin-xiao,WANG Xiao-ping,QIN Yong-sheng,CHEN Jun-qi. Key Laboratory of Soil , Water Conservation , Desertification Combating of Ministry of Education,School of Soil , Water Conservation,Beijing Forestry University,,P.R.China, Beijing Forestry , Parks. Nutrient cycling of N,P and K in a plantation ecosystem of Pinus tabulaeformis in Miyun District,Beijing[J]. Journal of Beijing Forestry University, 2008, 0(Z2) | |
| Authors: | XIAO Yang CHEN Li-hua YU Xin-xiao WANG Xiao-ping QIN Yong-sheng CHEN Jun-qi. Key Laboratory of Soil Water Conservation & Desertification Combating of Ministry of Education School of Soil Water Conservation Beijing Forestry University P.R.China Beijing Forestry Parks |
| Affiliation: | XIAO Yang1,CHEN Li-hua1,YU Xin-xiao1,WANG Xiao-ping2,QIN Yong-sheng2,CHEN Jun-qi2.1 Key Laboratory of Soil , Water Conservation & Desertification Combating of Ministry of Education,School of Soil , Water Conservation,Beijing Forestry University,100083,P.R.China,2 Beijing Forestry , Parks Department of International Cooperation,100029,P.R.China. |
| Abstract: | A study on the biocycling of N,P and K in the 12 years old mixed Quercus acutissima and Platycladus orientalis forest ecosystem was conducted in Miyun District of Beijing.The total store of N,P and K in the mixed forest ecosystem is 236 925.10 kg/hm2,in which the store in soil from 0 to 40 cm is 236 601.10 kg/hm2,in litter and plant is 50.71 and 273.25 kg/hm2 respectively.The annual absorption of N,P and K is 26.05,2.47 and 26.44 kg/hm2 successively in which the annual retention is 13.81,1.72,8.90 kg/hm2,th... |
| Keywords: | Quercus acutissima mixed forest ecosystems biocycling |
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