Effects of rice cropping intensity on soil nitrogen mineralization rate and potential in buried ancient paddy soils from the neolithic age in china's yangtze river delta
文献类型：期刊论文
| 作者 | Lu, Jia1,2; Hu, Zhengyi1,2; Xu, Zhihong3; Cao, Zhihong2; Zhuang, Shunyao2; Yang, Linzhang2; Lin, Xiangui2; Dong, Yuanhua2; Yin, Rui2; Ding, Jinlong4 |
| 刊名 | Journal of soils and sediments
 |
| 出版日期 | 2009-12-01 |
| 卷号 | 9期号:6页码:526-536 |
| 关键词 | (15)n natural abundance Ancient soil Nitrogen mineralization Rice cropping intensity Rice phytolith Soil fertility |
| ISSN号 | 1439-0108 |
| DOI | 10.1007/s11368-009-0138-1 |
| 通讯作者 | Hu, zhengyi(zhyhu@gucas.ac.cn) |
| 英文摘要 | Rice cropping density, rice cropping duration, and fertilization can affect soil nitrogen (n) supply, but rice cropping intensity (rci) on soil n fertility is not fully understood, particularly for ancient paddy soils without n fertilization. eight buried ancient paddy soils from the neolithic age in china's yangtze river delta, and its parent material, and seven present paddy soils in the same fields were used to investigate the effects of rci on soil nitrogen mineralization rate and potential. in the present study, concentration of phytolith of rice in soils was used to indicate the rci. soil n content was obviously greater in the buried neolithic paddy soils than in the parent material. total soil n increased with increasing phytolith from 5,200 to 60,000 pellets g(-1), but tended to decrease with increasing phytolith from 60,000 to 105,000 pellets g(-1). a possible reason for rci-induced increase of soil n was due to biological n(2) fixation in the rice field because there was a significant negative relationship between total n and delta(15)n in the buried neolithic soils. the mineralization rate constant (k) ranged from 0.0126 to 0.0485 d(-1) with an average of 0.0276 d(-1), which was similar to that of the parent material, but lower than those in the present paddy soils. the k value increased with increasing rci in the neolithic paddy soils. there was a significant positive relation between rci and the percentage of cumulative mineralizable n in the 14 d of that within 103 d incubation. soil n content tended to increase with the increasing intensity of rice cropping and then decreased under the high intensity of rice cropping; the excessive high intensification of rice cropping could facilitate fast n mineralization (labile n) fraction in the cumulated mineralized n. the unfertilized paddy field could only meet soil n supply under the low intensification of cropping rice in the neolithic age. the n fertilization is necessary in order to improve soil fertility for sustaining the present high-yield rice production. |
| WOS关键词 | HOOP PINE PLANTATION ; SUBTROPICAL AUSTRALIA ; MICROBIAL PROPERTIES ; N-15 ABUNDANCE ; FLOODED SOIL ; DYNAMICS ; FOREST ; FIXATION ; SYSTEMS ; TRANSFORMATIONS |
| WOS研究方向 | Geology ; Agriculture |
| WOS类目 | Geosciences, Multidisciplinary ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000271643900003 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2395350 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Hu, Zhengyi |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China 3.Griffith Univ, Ctr Forestry & Hort Res, Brisbane, Qld 4111, Australia 4.Suzhou Museum, Dept Archaeol, Suzhou 215001, Peoples R China 5.Zhejiang Prov Inst Cultural Relics & Archaeol, Hangzhou 310004, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Jia,Hu, Zhengyi,Xu, Zhihong,et al. Effects of rice cropping intensity on soil nitrogen mineralization rate and potential in buried ancient paddy soils from the neolithic age in china's yangtze river delta[J]. Journal of soils and sediments,2009,9(6):526-536. |
| APA | Lu, Jia.,Hu, Zhengyi.,Xu, Zhihong.,Cao, Zhihong.,Zhuang, Shunyao.,...&Zheng, Yunfei.(2009).Effects of rice cropping intensity on soil nitrogen mineralization rate and potential in buried ancient paddy soils from the neolithic age in china's yangtze river delta.Journal of soils and sediments,9(6),526-536. |
| MLA | Lu, Jia,et al."Effects of rice cropping intensity on soil nitrogen mineralization rate and potential in buried ancient paddy soils from the neolithic age in china's yangtze river delta".Journal of soils and sediments 9.6(2009):526-536. |
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来源：中国科学院大学
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