IMHE OpenIR  > 山区发展研究中心
多年冻土对青藏高原草地生态承载力的贡献研究
Alternative TitleContribution of permafrost to grassland ecological carrying capacity in the Qinghai-Tibetan Plateau
方一平1,2; 朱付彪1,3; 宜树华4; 邱孝枰1,3; 丁永建2,5,6
2019
Source Publication气候变化研究进展
ISSN1673-1719
Volume15Issue:2Pages:150-157
SubtypeArticle
Contribution Rank1
Abstract草地生态系统是一个复杂的社会、经济、生态系统,多年冻土作为高寒草地生态系统结构和功能维系的重要因素,是客观刻画高寒草地生态承载力不容忽视的重要方面。文中采用结构动力学方法,从草地质量、草地干预、草地潜力、草地压力4个维度建立高寒草地生态承载力结构动力学模型,分析青藏高原多年冻土区草地生态承载力的变化以及主要结构要素,量化多年冻土变化对青藏高原高寒草地生态承载力的贡献率,结果表明:(1)多年冻土区草地生态承载力呈增加趋势,尤其是1998年以后上升显著,这主要归因于草地生长季节降水增加、气温升高、净初级生产力增幅驱动以及生态保护工程建设的共同作用。(2)多年冻土活动层厚度变化与草地生态承载力呈负相关,多年冻土活动层厚度对草地生态承载力的贡献率约为10%,即多年冻土活动层厚度每增加1个单位,将导致草地生态承载力下降0.1个单位。由于青藏高原空间差异显著,加之气候变化的不确定性,这一贡献水平只是一个粗略的参照值。
Other AbstractGrassland ecosystem is a complex social-ecological system. Permafrost, as an important factor to maintain the structure and function of alpine grassland ecosystem, is an important aspect to describe the ecological carrying capacity of alpine grassland objectively. The impact of permafrost on the ecological carrying capacity of alpine grassland is poorly understood. In this study, using the structural dynamics method, we established a numerical model to estimate the ecological carrying capacity of alpine grassland. Variation of the grassland ecological carrying capacity of the permafrost regions of the Qinghai-Tibetan Plateau (QTP) was analyzed, while the contribution of the permafrost active layer to the ecological carrying capacity of alpine grassland was also quantified. Results show that the ecological carrying capacity of alpine grassland in permafrost regions displayed an increasing trend, especially after 1998,due to increases of precipitation, air temperature, net primary productivity during growing season of grassland, and the establishment of ecological protection projects. The thickness variation of permafrost active layer is negatively correlated with ecological carrying capacity of alpine grassland. The mean contribution of permafrost active thickness to the ecological carrying capacity of alpine grassland was 10% in the QTP during 1980-2013. That is, for every 1 unit increase in the thickness of the permafrost active layer, the ecological carrying capacity of the alpine grassland will be reduced by 0.1 units. Owing to the significant spatial differences over the QTP and the uncertainty of climate change, this result is only a rough estimate of role of permafrost in the ecological carrying capacity.
Keyword草地生态承载力 多年冻土 多年冻土活动层厚度 结构动力学 青藏高原
DOI10.12006/j.issn.1673-1719.2018.122
Indexed ByCSCD
Language中文
CSCD IDCSCD:6455129
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26178
Collection山区发展研究中心
Corresponding Author方一平
Affiliation1.中国科学院水利部成都山地灾害与环境研究所;
2.中国科学院大学资源与环境学院;
3.中国科学院大学;
4.中国科学院西北生态环境资源研究院;
5.中国科学院寒区旱区环境与工程研究所冰冻圈科学重点实验室;
6.中国科学院寒区旱区环境与工程研究所内陆河流域生态水文重点实验室
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
方一平,朱付彪,宜树华,等. 多年冻土对青藏高原草地生态承载力的贡献研究[J]. 气候变化研究进展,2019,15(2):150-157.
APA 方一平,朱付彪,宜树华,邱孝枰,&丁永建.(2019).多年冻土对青藏高原草地生态承载力的贡献研究.气候变化研究进展,15(2),150-157.
MLA 方一平,et al."多年冻土对青藏高原草地生态承载力的贡献研究".气候变化研究进展 15.2(2019):150-157.
Files in This Item:
File Name/Size DocType Version Access License
多年冻土对青藏高原草地生态承载力的贡献研(2199KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[方一平]'s Articles
[朱付彪]'s Articles
[宜树华]'s Articles
Baidu academic
Similar articles in Baidu academic
[方一平]'s Articles
[朱付彪]'s Articles
[宜树华]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[方一平]'s Articles
[朱付彪]'s Articles
[宜树华]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 多年冻土对青藏高原草地生态承载力的贡献研究_方一平.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.