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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
Source Publication气候变化研究进展
Contribution Rank1
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
Indexed ByCSCD
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author方一平
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.
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