气候变化领域集成服务门户(CCPortal): (Table 1) Bioclimatic subzones and soil characteristics along the Yamal Arctic Transect, northwestern Siberia

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.842562
	(Table 1) Bioclimatic subzones and soil characteristics along the Yamal Arctic Transect, northwestern Siberia
	Yu; Qin; Epstein; Howard E; Walker; Donald A
发布日期	2009-02-10
数据集类型	dataset
英文简介	Sustainability of tundra vegetation under changing climate on the Yamal Peninsula, northwestern Siberia, home to the world's largest area of reindeer husbandry, is of crucial importance to the local native community. An integrated investigation is needed for better understanding of the effects of soils, climate change and grazing on tundra vegetation in the Yamal region. In this study we applied a nutrient-based plant community model - ArcVeg - to evaluate how two factors (soil organic nitrogen (SON) levels and grazing) interact to affect tundra responses to climate warming across a latitudinal climatic gradient on the Yamal Peninsula. Model simulations were driven by field-collected soil data and expected grazing patterns along the Yamal Arctic Transect (YAT), within bioclimate subzones C (high arctic), D (northern low arctic) and E (southern low arctic). Plant biomass and NPP (net primary productivity) were significantly increased with warmer bioclimate subzones, greater soil nutrient levels and temporal climate warming, while they declined with higher grazing frequency. Temporal climate warming of 2 °C caused an increase of 665 g/m2 in total biomass at the high SON site in subzone E, but only 298 g/m2 at the low SON site. When grazing frequency was also increased, total biomass increased by only 369 g/m2 at the high SON site in contrast to 184 g/m2 at the low SON site in subzone E. Our results suggest that high SON can support greater plant biomass and plant responses to climate warming, while low SON and grazing may limit plant response to climate change. In addition to the first order factors (SON, bioclimate subzones, grazing and temporal climate warming), interactions among these significantly affect plant biomass and productivity in the arctic tundra and should not be ignored in regional scale studies.
空间范围	Median Latitude: 69.806507 * Median Longitude: 68.074607 * South-bound Latitude: 67.694750 * West-bound Longitude: 66.889140 * North-bound Latitude: 71.194390 * East-bound Longitude: 68.890220
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/219996
推荐引用方式 GB/T 7714	Yu,Qin,Epstein,et al. (Table 1) Bioclimatic subzones and soil characteristics along the Yamal Arctic Transect, northwestern Siberia.2009-02-10.https://doi.org/10.1594/PANGAEA.842562.