Effects of Pinus sylvestris var. mongolica afforestation on soil phosphorus status of the Keerqin Sandy Lands in China
文献类型：期刊论文
| 作者 | Zhao, Q ; Zeng, DH ; Lee, DK ; He, XY ; Fan, ZP ; Jin, YH |
| 刊名 | JOURNAL OF ARID ENVIRONMENTS
 |
| 出版日期 | 2007 |
| 卷号 | 69期号:4页码:569-582 |
| 关键词 | rhizosphere effects mineralization of organic phosphorus soil phosphorus depletion |
| ISSN号 | 0140-1963 |
| 通讯作者 | Zeng, DH, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 中文摘要 | Few studies have considered the effects of afforestation on soil phosphorus (P) status in semiarid regions such as the Keerclin Sandy Lands in China, though plantations have been widely established on P-deficient sandy soils to control wind-induced desertification. Phosphorus fractions and acid phosphomonoesterase (AP) activities were compared in the rhizosphere and bulk soils (0-5 and 5-20cm) Under Mongolian pine (Pinus sylvestris L. var. mongolica Litv.) plantations of different ages (15, 22, and 30 years old) and in bulk soils under grasslands to understand soil P behavior with Mongolian pine plantation development and to find out major factors controlling soil P cycling. Stand age and rhizosphere processes had similar effects on the soil P fractions. Labile inorganic P and phosphate absorbed on aluminum and iron oxides were not affected by stand age and rhizosphere processes. Rhizosphere effects of Mongolian pine accelerated the mineralization of organic P by increasing microbial and AP activities. Soil P properties in bulk and rhizosphere soils changed similarly with plantation development. In the first 15 years after afforestation, total organic P, calcium phosphate, labile organic P, microbial biomass P (MBP) concentrations, and AP activities were reduced sharply. About 73% of the reduction in total P came from mineralization of organic P and 24% came from solubilization of calcium phosphate. From 15 to 22 years onward, soil total organic P and calcium phosphate decreased gradually and labile organic P, MBP, and AP activities increased greatly, whereas total inorganic P remained constant. The results suggest that soil P pool was depleted with Mongolian pine plantation development, especially in the early stage. As the dominant form of soil P, organic P was the main source of available P and associated biological processes controlled soil P cycling under Mongolian pine plantations. To ensure sustainability of pine plantations, it is imperative that soil fertility is conserved by adding fertilizer, thinning, and protecting litterfall. (c) 2006 Elsevier Ltd. All rights reserved. |
| 学科主题 | Ecology; Environmental Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000245508300003 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54729]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhao, Q,Zeng, DH,Lee, DK,et al. Effects of Pinus sylvestris var. mongolica afforestation on soil phosphorus status of the Keerqin Sandy Lands in China[J]. JOURNAL OF ARID ENVIRONMENTS,2007,69(4):569-582. |
| APA | Zhao, Q,Zeng, DH,Lee, DK,He, XY,Fan, ZP,&Jin, YH.(2007).Effects of Pinus sylvestris var. mongolica afforestation on soil phosphorus status of the Keerqin Sandy Lands in China.JOURNAL OF ARID ENVIRONMENTS,69(4),569-582. |
| MLA | Zhao, Q,et al."Effects of Pinus sylvestris var. mongolica afforestation on soil phosphorus status of the Keerqin Sandy Lands in China".JOURNAL OF ARID ENVIRONMENTS 69.4(2007):569-582. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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