Soil nutrients of different land-use types and topographic positions in the water-wind erosion crisscross region of China's Loess Plateau
文献类型：期刊论文
| 作者 | Ge, Jiamin1,2; Wang, Sheng1,2; Fan, Jun1,3; Gongadze, Kate4; Wu, Lianhai4 |
| 刊名 | CATENA
 |
| 出版日期 | 2020 |
| 卷号 | 184页码:10 |
| 关键词 | Water-wind crisscross erosion Land-use types Topographic positions Deep profile Soil nutrient stocks |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2019.104243 |
| 通讯作者 | Fan, Jun(junfan@nwsuaf.edu.cn) |
| 英文摘要 | The Grain-for-Green program was implemented in China in 1999 to reduce soil erosion, increase biodiversity, conserve natural resources and improve the natural environment by modifying patterns of land use. The located field experiment about the influence of different land-use types (LUTs) on nutrient contents and changes in the soil profile or the degree of influence over time was conducted for many years in Liudaogou watershed. The contents of soil organic matter (SOM), total nitrogen (TN), total phosphorus (FP), available P (AP) and two inorganic N forms, ammonium-N (AN) and nitrate-N (NN), were determined in 0-200 cm soil profiles in five terraced and three sloped LUTs. The terraced LUTs were bare land (BAT), farmland (FAT), abandoned land (ABT), forage land (FOT, with alfalfa) and shrubland (SHT, with the peashrub Caragana korshinskii), and the sloped LUTs were farmland (FAS), abandoned land (ABS) and forage land (FOS). All of these LUTs were converted from traditional farmland except for FAT and FAS and they are carefully maintained for the last 50 years. SOM and TN contents were significantly higher after conversion from farmland to shrubland or grassland (15.6-34.9%) and decreased (51.5-77.1% for SOM in 0-40 cm, 49.7-72.1% for TN in 0-60 cm) with depth for all LUTs. TP and AN contents throughout the profiles were not significantly affected by land use, but NN was leached and accumulated in farmland only. AP content was highest throughout the profile in ABS when TP and AP contents were higher in sloped land than terraced land. SOM, TN and AN contents did not differ significantly for the same land-use patterns in the two topographies. SOM and TN contents in the surface soil increased with the length of recovery. Our observations demonstrated that the Grain-for-Green program has improved the nutrient contents and fertility of the soil and has increased SOM and TN stocks over time and that these effects were not limited to the topsoil. Abandoned land may be the optimal choice for nutrient sequestration in terraced and sloped land. Shrubland and artificial grassland are also recommended for increasing soil nutrient content in the area. |
| WOS关键词 | DISSOLVED ORGANIC-CARBON ; TOTAL NITROGEN STOCKS ; FOR-GREEN PROGRAM ; VEGETATION SUCCESSION ; CONIFEROUS FORESTS ; COVER CHANGE ; SEQUESTRATION ; RESTORATION ; STOICHIOMETRY ; CLIMATE |
| 资助项目 | National Natural Science Foundation of China[41571224] ; National Natural Science Foundation of China[41571130082] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000525323800007 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/133837]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Fan, Jun |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 2.Univ China Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 3.Northwest A&F Univ, Coll Resources & Environm, 3 Taicheng Rd, Yangling 712100, Shaanxi, Peoples R China 4.Rothamsted Res, Sustainable Agr Sci, Okehampton EX20 2SB, Devon, England |
| 推荐引用方式 GB/T 7714 | Ge, Jiamin,Wang, Sheng,Fan, Jun,et al. Soil nutrients of different land-use types and topographic positions in the water-wind erosion crisscross region of China's Loess Plateau[J]. CATENA,2020,184:10. |
| APA | Ge, Jiamin,Wang, Sheng,Fan, Jun,Gongadze, Kate,&Wu, Lianhai.(2020).Soil nutrients of different land-use types and topographic positions in the water-wind erosion crisscross region of China's Loess Plateau.CATENA,184,10. |
| MLA | Ge, Jiamin,et al."Soil nutrients of different land-use types and topographic positions in the water-wind erosion crisscross region of China's Loess Plateau".CATENA 184(2020):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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