Determining the harvest frequency to maintain grassland productivity and minimum nutrient removal from soil
文献类型：期刊论文
| 作者 | Zheng, Yang; Pei, Jiu-Ying; Fang, Chao1; Penuelas, Josep2,5; Sardans, Jordi2,5; Xiong, You-Cai; Li, Dan-Feng; Ke, Wen-Bin; Ye, Jian-Sheng |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2023-06-01 |
| 卷号 | N/A |
| 关键词 | Mowing Rainfall Aboveground primary productivity Species richness Plant and soil nutrient |
| DOI | 10.1007/s11104-023-05907-w |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Background Quantifying grassland aboveground biomass and soil nutrient removal in response to harvest intensities is essential to balance productivity and conservation benefit. There is a lack of studies examining the harvest frequency-induced threshold that leads to abrupt decay in grassland functioning.MethodsBased on field experiments in a semiarid and a dry subhumid grassland, we tested threshold responses of aboveground biomass (AGB) and removed plant nitrogen (N) and phosphorus (P) to 9-harvest frequency gradients within-year (2017 and 2018); and the legacy effects of harvest on AGB and soil available N and P pools and stoichiometry following cessation (2019) of harvest.ResultsIn both grasslands, the plant AGB within-year were highest at the frequency of similar to 2-harvest; it abruptly decreased once the threshold was exceeded. Moreover, except for plant N at the semiarid site, the response patterns of the N and P removals to harvest frequency were similar to that of plant AGB. The increased removal of N was higher than P with harvest frequency, leading to decreased soil available N/P ratio excess of twice at the dry subhumid site. Following cessation, the previous harvest frequency had a negative legacy effect on both plant AGB and the ratio of graminoid to forb species.ConclusionsThese results indicate that <= 2-harvest annually are applicable for optimal pastoral production; among which one harvest by the end of the growing season may be appropriate for conserving above- and below-ground parts and maintaining healthy grassland functions. Soil N/P condition should be considered as an indicator when determining a sustainable harvest frequency. |
| WOS关键词 | DIFFERENT MOWING FREQUENCIES ; PHOSPHORUS LIMITATION ; COMPENSATORY GROWTH ; NITROGEN DEPOSITION ; RESPONSES ; PLANT ; DIVERSITY ; CLIMATE ; DEFOLIATION ; CARBON |
| WOS研究方向 | Agriculture ; Plant Sciences |
| WOS记录号 | WOS:000927564100001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200756]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 作者单位 | 1.CREAF, E-08193 Cerdanyola Del Valles, Catalonia, Spain 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Lanzhou Univ, Coll Ecol, State Key Lab Herbage Improvement & Grassland Agr, 222,South Tianshui Rd, Lanzhou 730000, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Res Ctr Global Changes & Ecosyst Carbon Sequestra, Sch Appl Meteorol, Nanjing 210044, Peoples R China 5.UAB, CSIC Global Ecol Unit, CSIC, CREAF, E-08193 Bellaterra, Spain |
| 推荐引用方式 GB/T 7714 | Zheng, Yang,Pei, Jiu-Ying,Fang, Chao,et al. Determining the harvest frequency to maintain grassland productivity and minimum nutrient removal from soil[J]. PLANT AND SOIL,2023,N/A. |
| APA | Zheng, Yang.,Pei, Jiu-Ying.,Fang, Chao.,Penuelas, Josep.,Sardans, Jordi.,...&Ye, Jian-Sheng.(2023).Determining the harvest frequency to maintain grassland productivity and minimum nutrient removal from soil.PLANT AND SOIL,N/A. |
| MLA | Zheng, Yang,et al."Determining the harvest frequency to maintain grassland productivity and minimum nutrient removal from soil".PLANT AND SOIL N/A(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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