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Method for predicating biomass of submerged plant by establishing growth simulation model

A technology for submerged plants and biomass, which is applied in the field of predicting the biomass of submerged plants in water bodies, and can solve the problems of ignoring the amount of submerged plants

Inactive Publication Date: 2014-04-09
NANJING UNIV
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Problems solved by technology

The distribution model mainly focuses on analyzing the distribution probability, maximum distribution depth and coverage rate of submerged plants, but ignores the amount of submerged plants.

Method used

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  • Method for predicating biomass of submerged plant by establishing growth simulation model
  • Method for predicating biomass of submerged plant by establishing growth simulation model
  • Method for predicating biomass of submerged plant by establishing growth simulation model

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Embodiment Construction

[0282] The present invention will be further described below in combination with specific embodiments.

[0283]The invention consists of two parts: a water quality module and a submerged plant module. The water quality module controls the water quality indicators (DO, TP, PO) in the water body 4 3- -P, TN, NO 3 - -N, NH 4 + -N, Chla) for dynamic simulations, providing light, temperature and nutrient forcing functions for submerged plants. The submerged plant module describes submerged plant growth and decomposition.

[0284] A method for predicting the biomass of submerged plants by building a growth simulation model, the steps are as follows:

[0285] (1) Use water quality analysis instruments to obtain the data of algae, organic carbon, phosphorus, nitrogen, and dissolved oxygen in the lake, and obtain the relevant kinetic mass conservation based on the relationship between algae, organic carbon, phosphorus, nitrogen, and dissolved oxygen in the lake Equation, the wa...

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Abstract

A method for predicating biomass of a submerged plant by establishing a growth simulation model comprises the following steps that firstly, a relevant dynamic mass conservation equation is obtained according to the relation among algae, organic carbon, phosphorus, nitrogen and dissolved oxygen in a lake; secondly, a relevant dynamic mass conservation equation is obtained according to the relation among the stem and root of the submerged plant and aerophyte growing around the stem; thirdly, coupling is carried out on a water quality module and a submerged plant module, and the functions of the submerged plant are added to the relevant dynamic mass conservation equations; fourthly, each model time step differential equation is solved, the biomass of the submerged plant is finally obtained, and the biomass predicating of the submerged plant is finished.

Description

technical field [0001] The invention belongs to a method for predicting the biomass of submerged plants in a water body based on a growth simulation model, in particular to a method suitable for predicting the biomass of submerged plants in small shallow lakes. Background technique [0002] Submerged plants refer to aquatic plants whose plants are submerged in water and rooted in the substrate for most of their life cycle. As an important part of the lake ecosystem and one of the main primary producers, submerged plants play an important role in the cycle of material and energy in the lake ecosystem, and play an important role in regulating the nutrient system of the water body. Aquatic plants occupy the main interface between water and sediment in lakes, and have a very important impact on lake productivity and lake ecosystems. The restoration of aquatic vegetation dominated by submerged plants is crucial to the restoration of eutrophic lakes. Therefore, in order to achiev...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/00
Inventor 钱新高海龙叶瑞朱文婷殷洪
Owner NANJING UNIV
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