气候变化领域集成服务门户(CCPortal): Effect of warming and degradation on phenophases of Kobresia pygmaea and Potentilla multifida on the Tibetan Plateau

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DOI	10.1016/j.agee.2020.106998
	Effect of warming and degradation on phenophases of Kobresia pygmaea and Potentilla multifida on the Tibetan Plateau
	Zhang, Lirong; Lv, Wangwang; Cui, Shujuan; Jiang, Lili; Li, Bowen; Liu, Peipei; Wang, Qi; Zhou, Yang; Hong, Huan; Wang, A.; Luo, Caiyun; Zhang, Zhenhua; Dorji, Tsechoe; Wang, Shiping
通讯作者	Wang, SP (通讯作者)
发表日期	2020
ISSN	0167-8809
EISSN	1873-2305
卷号	300
英文摘要	Many studies have focused on the responses of phenophases to warming in natural, non-degraded grasslands. However, degraded grasslands widely distribute in the world due to climate change and overgrazing. So far, a comprehensive understanding of how plant phenology responds to warming, degradation and their interactions remains elusive. Here, the relative effects of warming and degradation on the phenological sequences of two dominant plant species were tested using a two factorial experiment of warming and moderate degradation (i.e., four treatments: NWND, WND, NWD and WD) during three successive years. We found that WND significantly delayed the onsets of early phenophases (i.e., leaf-out, booting-seL flowering and fruiting-set) and shortened the total activity period (TAP) only for the early spring flowering Kobresia pygmaea compared with NWND. NWD generally did not significantly affect the timing or duration of all phenophases for the two plant species depending on year relative to NWND. Interaction between warming and moderate degradation significantly delayed leaf-out and shortened total activity period of the two plant species. There were negative correlations between plant species richness and onset of vegetation after fruiting-set for K. pygmaea and the duration of fruiting-set for Potentilla multifida (a dominant mid-summer flowering species in degraded plots), but there were positive correlations between plant species richness and leafing duration for P. multifida. Positive correlations were found between first leaf-out and NO3--N in soils for both species but negative correlations were found between first leaf-out and NH4--N in soils for P. multifida. There were positive and negative correlations between TAP of P. multifida and NH4--N and NO3--N in soils, respectively. Therefore, our results suggest that moderate degradation could weaken the negative effects of warming on reproductive phenophases of K. pygmaea, and that we should take into account grassland degradation and its associated changes in plant species richness and soil inorganic nitrogen when we predict the response of plant phenology to future warming.
关键词	PHENOLOGICAL SEQUENCES CLIMATE-CHANGE RESPONSES PLANTS GRASSLANDS VEGETATION COMMUNITY ECOSYSTEM
英文关键词	Warming; Degradation; Plant phenological sequence; Onset and duration; Kobresia pygmaea and Potentilla multifida; Species diversity; Soil nutrient; Alpine grassland; Tibetan Plateau
语种	英语
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS记录号	WOS:000540169600016
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259802
推荐引用方式 GB/T 7714	Zhang, Lirong,Lv, Wangwang,Cui, Shujuan,et al. Effect of warming and degradation on phenophases of Kobresia pygmaea and Potentilla multifida on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,300.
APA	Zhang, Lirong.,Lv, Wangwang.,Cui, Shujuan.,Jiang, Lili.,Li, Bowen.,...&Wang, Shiping.(2020).Effect of warming and degradation on phenophases of Kobresia pygmaea and Potentilla multifida on the Tibetan Plateau.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,300.
MLA	Zhang, Lirong,et al."Effect of warming and degradation on phenophases of Kobresia pygmaea and Potentilla multifida on the Tibetan Plateau".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 300(2020).