Alpine grassland degradation in the Qilian Mountains, China - A case study in Damaying Grassland
文献类型：期刊论文
| 作者 | Yao, Zhengyi1; Zhao, Cunyu1; Yang, Keshuo2; Liu, Weicheng2; Li, Yuan2; You, Jiandong2; Xiao, Jianhua1 |
| 刊名 | CATENA
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 137页码:494-500 |
| 关键词 | Alpine grassland Degradation Forage productivity Qilian Mountains Soil nutrient |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2015.09.021 |
| 通讯作者 | Yao, Zhengyi(yaozy@lzb.ac.cn) |
| 英文摘要 | Degradation of semiarid grassland and efforts to control that degradation have become pressing issues. However, the inherent characteristics of the grassland and the intertemporal nature of the problem complicate the analysis of degradation issues, and consequently, the search for more appropriate rangeland policies. Using the Damaying Grassland as a case study, we assessed alpine grassland on the north slopes of the Qilian Mountains by means of in situ samples using vegetative cover, biological diversity, forage productivity, soil bulk density, and soil nutrients as the main evaluation indices. The forage yields on high, moderate, and low coverage rangeland exhibited decreases of 20.2%, 20.8% and 56.4%, respectively, from 1982 to 2012. Due to the lower basal cover of rangeland in poor condition, soil nutrient and organic matter content decreased with rangeland degradation. Increased soil compaction appears to lead to lower basal cover of rangeland The soil bulk density in high, moderate, and low coverage rangelands was found to be 0.8 g.cm(-3), 1.1 g.cm(-3), and 1.2 g.cm(-3), respectively. The soil nutrient levels and organic matter contents indicate that the rangelands experienced degradation over the 30-year period. Organic matter and available nitrogen decreased significantly overtime, while available phosphorus and available potassium increased significantly. Overall, our results show that the Damaying Grassland is in a period of rapid degradation, and that mitigation and remediation measures are needed to protect the rangelands. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | ARID RANGELAND DEGRADATION ; INNER-MONGOLIA ; SOUTH-AFRICA ; NORTHERN CHINA ; WEST CHINA ; DIVERSITY ; QINGHAI ; DESERTIFICATION ; MANAGEMENT ; LIVESTOCK |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000367635800047 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557122 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yao, Zhengyi |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China 2.China Anim Husb Grp, Shandan Horse Farm, Shandan 734104, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Zhengyi,Zhao, Cunyu,Yang, Keshuo,et al. Alpine grassland degradation in the Qilian Mountains, China - A case study in Damaying Grassland[J]. CATENA,2016,137:494-500. |
| APA | Yao, Zhengyi.,Zhao, Cunyu.,Yang, Keshuo.,Liu, Weicheng.,Li, Yuan.,...&Xiao, Jianhua.(2016).Alpine grassland degradation in the Qilian Mountains, China - A case study in Damaying Grassland.CATENA,137,494-500. |
| MLA | Yao, Zhengyi,et al."Alpine grassland degradation in the Qilian Mountains, China - A case study in Damaying Grassland".CATENA 137(2016):494-500. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。