NUTRIENT RESPONSES OF CAREX SCHMIDTII TO CONSECUTIVE DROUGHT AND RE-FLOODING EPISODES IN SEMI-ARID WETLANDS: IMPLICATIONS FOR TUSSOCK RESTORATION
| 第一作者： |
Zhang, D. J. |
| 英文第一作者： |
Zhang, D. J. |
| 联系作者： |
Zhang, D. J. |
| 英文联系作者： |
Zhang, D. J. |
| 发表年度： |
2023 |
| 卷： |
20 |
| 摘要： |
The regulation mechanism of wetland plants in response to consecutive drought (D) and reflooding (RT) events can be identified via nutrient responses. Nutrient responses of Carex schmidtii were tested using a simulation experiment with five treatments: D, wetting (W) and RT resulted in C. schmidtii being re-flooded after 30, 40 and 60 days of drought. D and RT treatments partly affected nutrient stoichiometry of C. schmidtii. Plant nutrient stoichiometry experienced a shift of adaption from drought to flooding and making part or full recoveries after RT with reference to D and W treatments. Plant P concentration had a negative relationship with N:K ratio. D and RT effects on plant trade-offs and scaling exponents of C. schmidtii were profound; the scaling exponent of P similar to N increased with initial re- flooding time, while that of K similar to N decreased. Although nutrient trade-offs in D gradually differed from W and RT over time, the nutrient trade-offs of RT recovered with reference to W. The D and RT were recorded to contribute to nutrient flexibility of C. schmidtii; however, strong internal stability of stoichiometric relationships effectively relieved changes in plant nutrient stoichiometry. The findings aid our understanding of nutrient responses of C. schmidtii to D and RT. |
| 刊物名称： |
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH |
| 参与作者： |
Zhang,DJ(Zhang,D.J.)[1];Xia,JB(Xia,J.B.)[1];Sun,JK(Sun,J.K.)[1];Ma,JZ(Ma,J.Z.)[1];Zhao,DD(Zhao,D.D.)[1];Duan,D.X.[1];Wang,X.H.[2];Tong,Z.Z.[3] |
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