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Volume 8
Journal of Ecosystem & Ecography
ISSN: 2157-7625
Ecology 2018
March 19-20, 2018
Page 54
conference
series
.com
March 19-20, 2018 | Berlin, Germany
World Conference on Ecology
Fang Yiping, J Ecosyst Ecography 2018, Volume 8
DOI: 10.4172/2157-7625-C1-031
The role of permafrost in ecological resilience of alpine grassland and spatial heterogeneity in the
source regions of Yangtze and Yellow Rivers
U
nder the context of human activities and climate warming, the change in permafrost has affected the alpine grassland
ecosystem. To describe the ecological resilience of alpine grassland in a more objective manner, the factor of frozen soil has
to be considered. In this paper, using the structural dynamics method, we established the structural dynamics model of ecological
resilience for alpine grassland from the aspects of grassland quality, grassland intervention, grassland potential and grassland
pressure dimension, analyzed the variation in the grassland ecological resilience of permafrost regions and its sensitivity to the
change of permafrost, and also quantified the contribution rate of permafrost active layer change to the ecological resilience of
alpine grassland. The results indicated that (1) the ecological resilience of grassland in permafrost regions showed an increasing
trend, especially after 1997, which is the integrated results of precipitation, air temperature in grassland growing season (April
to September), NPP and ecological protection projects; (2) the sensitivity of ecological resilience of grassland to the variation in
permafrost active layer was complicated, experiencing the course of sensitivity, high sensitivity and low sensitivity. Geographically,
the sensitivity of northern and western regions was overall higher than that of southern and eastern regions. The shape of the high
sensitive zone gradually changed from island to band shape and from island to plane shape; (3) grassland ecological resilience was
reduced as the increase in the thickness of permafrost active layer. The contribution rate of permafrost to the grassland ecological
resilience was -4.3%, that is, a 0.04 unit reduction in the resilience is caused by every 1 unit increase in the thickness of permafrost
active layer.
Recent Publications
1. Fang Y P, Zhao C, Ding Y J, Qin DH and Huang J L (2016) Impacts of snow disaster onmeat production and adaptation:
an empirical analysis in the yellow river source region. Sustainability Science 11:246-260.
2. Fang Y P, Liu Y W and Yan X (2015) Meat production’ sensitivity and adaptation to precipitation concentration index
during the growing season of grassland: Insights from rural households. Agricultural and Forest Meteorology 201:51-60.
3. Fang Y P (2013) The effects of natural capital protection on pastoralist’s livelihood and management implication in the
source region of the Yellow River, China. Journal of Mountain Science 10:885-987.
4. Fang Y P (2013) Managing the three rivers headwater region, China: from ecological engineering to social engineering.
AMBIO 42:566-576.
5. Fang Y P and Wei Y Q (2013) Climate change adaptation on the Qinghai–Tibetan Plateau: The importance of solar
energy utilization for rural household. Renewable and Sustainable Energy Reviews 18:508-518.
Biography
Fang Yiping is currently a full Professor and Supervisor of PhD candidates at Institute of Mountain Hazards & Environment, CAS, and University of Chinese Academy of
Sciences. He is recognized within the field of human geography and the field of ecological economics for both his critiques of and contributions to balancing mountain
ecosystem protection and development even while he spends most of his time working across disciplinary ways of understanding. His research interests mainly cover
climate change adaptation and sustainability for mountainous areas. He is an active scholar who has published 146 research papers in peer-reviewed journals and 19
books. He serves as Vice Director of Academic Committee for Institute of Mountain Hazards & Environment, CAS; as Vice Director, Professional Committee of Economic
Geography, Chinese Association for Geography; as Director, Professional Committee for Cryospheric Change and Sustainable Development, Clic and IACS.
dr.jaouni@gmail.comFang Yiping
Chinese Academy of Sciences, China