Abstract
Ecological stoichiometric should be incorporated into management and nutrient impacted ecosystems dynamic to understand the status of ecosystems and ecological interaction. The present study focused on ecological stoichiometric characteristics of soil, and leaves, stems, and roots of different macrophytes after the banning of seine fishing in Shengjin Lake. For C, N, and P analysis from leaves, stems, roots, and soil to explore their stoichiometric ratio and deriving environmental forces, four dominant plant communities (Vallisneria natans, Zizania latifolia, Trapa natans and Carex schmidtii) were collected. The concentration of C, N, P and C: N: P ratio in leaves, stems, roots, and soil among the plant communities varied significantly. Along the depth gradient high C: N was measured in C.schmidtii soil (7.08±1.504) but not vary significantly (P >0.05). High C: P result was found in T.natans (81.14±43.88) and in V.natans soil (81.40±42.57) respectively with no significant difference (p>0.05). Besides, N: P ratio measured high in V. natans (13.7±4.05) and showed significant variation (P<0.05). High leaf C: N and N: P ratio was measured in C. schmidtii and V. natans respectively. Nevertheless, high leaf C: P ratio was measured in Z. latifolia. From the three studied organs, leaf C: N and N: P ratio showed high values compared to root and stems. The correlation analysis result showed that at 0-10cm depth soil organic carbon (SOC) correlated negatively with stem total phosphorus (STP), and root total nitrogen (RTN) (P<0.05) but positively strongly with leaf total phosphorus (LTP) and leaf total nitrogen (LTN) (P<0.01) respectively. Soil total nitrogen (STN) at 0-10cm strongly positively correlated with leaf total phosphorus (LTP) (P<0.01) and positively with RN: P and leaf total carbon (LTC) (P<0.05). Soil basic properties such as soil moisture content (SMC), bulky density (BD) and pH positively correlated with soil ecological stoichiometric characteristics. Redundancy analysis (RDA) result showed available nitrogen (AN), soil total nitrogen (STN), and available phosphorus (AP) were the potential determinants variables on plants stoichiometric characteristics.
Highlights
Ecological stoichiometry is an important tool for studying ecological processes and functions [1]
Soil organic carbon (SOC) content was ordered among studied macrophyte taxa as Carex schmidtii > Zizania latifolia> Vallisneria natans > Trapa natans respectively
High soil total nitrogen (STN) was measured in C. schmidtii followed by V. natans and Z. latifolia (6.953±1.23g kg-1) and (4.0.74±0.734 g kg-1) from 0–10cm soil layer respectively (Fig 2B) and showed significant difference (P
Summary
Ecological stoichiometry is an important tool for studying ecological processes and functions [1]. C: N and N: P ratio which can be used as effective indicators for the health conditions and growth status of plants [16, 24] and understating the life strategies of plants [25] are important as it reflects causes and consequences of ecological integrity This mainly provides good information to know different plants adaptation capacity to changing environment and stress [26]. There was no study conducted on the ecological stoichiometry of wetland soil in this Lake after the regeneration of those degraded plants and banning of using seine fishing net With this knowledge gap, this study mainly sought to determine, (1) the distribution patterns and stoichiometric characteristics of C,N, P, and C:N:P in soil, leave, stems, and roots of different macrophytes communities (2) to analyze soil-plant ecological stoichiometric interaction
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
