34 results about "Terrestrial ecosystem" patented technology

The present invention is directed to acoustics and signal processing. More specifically, the present invention is directed to a system and methods by which whether and the time during which one or more subjects are present within a given area of a marine or terrestrial ecosystem, and other information regarding the subjects can be efficiently determined by the sounds that the subjects produce. Advantageously, certain embodiments of the present invention permit a user to select and rapidly produce one or more visual presentations of the signals of interest (SOI) recorded from the passive acoustic monitoring of a given area of an ecosystem in order to obtain additional information about the subjects.

Aiming at the shortcomings of short observation time, high observation error, large workload and low efficiency of long-term continuous manual observation of plant community coverage in terrestrial ecosystems, the present invention invents a plant that can generate long-term sequences and takes two weeks as the time precision. Coverage technology can be used to quantitatively describe the change of plant community cover under the conditions of climate change and human disturbance. The technology first uses soil analyzers and plant monitoring equipment to obtain soil particle size and plant parameters, and combines soil databases to obtain soil hydrological parameters. Then the dynamic vegetation model is used to simulate the plant community coverage, and the digital camera imaging is used to obtain the measured plant coverage, the simulation results are verified and the soil hydrology and vegetation parameters in the database are corrected. The technology and device have the characteristics of low cost, high prediction accuracy, and wide application range, and have important indicative significance for the study of plant dynamics in terrestrial ecosystems and the protection of biodiversity.

The patent of the invention belongs to the technical field of aerospace life support, and discloses a miniature terrestrial ecosystem that can operate in a microgravity environment, and is mainly used for micro-ecological system operation experiments in a weightless environment. The present invention mainly includes a plant area 1, an animal area 2, a solid waste area 3, a water tank area 4, and an electric control area 5. Plants can be planted in plant area 1 to produce oxygen for biological utilization in animal area 2 and solid waste area 3; animals can be raised in animal area 2, and microorganisms can be inoculated to treat solid waste in solid waste area 3, both of which can produce carbon dioxide for plants Plant utilization in zone 1; water tank zone 4 can provide water for plants and realize system water circulation; electric control zone 5 can monitor and control various physical and chemical indicators and parameters of each zone in the system, and at the same time provide light for plants to ensure normal operation of the device run. The invention has simple structure and high degree of automation, and can be used to study the influence of special conditions of space environment on the whole terrestrial ecological system and each biological chain link.

The invention provides a device and a method for simulating influence of fire disturbance of a surface land ecological system to underground water. The method comprises the following steps of collecting a plurality of soil samples of aridisol by a soil drilling method, and separating obtained undisturbed soil columns into surface layer soil and middle layer soil; after the fire disturbance on the surface layer soil is simulated by a laboratory, sequentially loading the surface layer soil and the middle layer soil into a leaching column according to the order of the undisturbed soil column; using prepared simulated rainwater as a leaching solution, leaching by a continuous flow falling type water intake method, and qualitatively and quantitatively surveying the fine components of the soil leaching water sample. The method has the advantages that the influence of the fire disturbance of the surface land ecological system to the underground water, especially submersible water, can be simulated by a miniature leaching device of the laboratory; the accuracy is higher, the operation is simple and convenient, the cost is low, the controllability is good, the risk to environment is low, the application range is wide, the pertinency is strong, and the method is favorable for evaluating the comprehensive ecological effect of the underground water after the fire disturbance in a fully new view.

The invention provides a device for simulating the radionuclide wet deposition. The device comprises a rainfall artificial climate chamber, a contaminated water tank connected with the rainfall artificial climate chamber through a water distribution pipeline of a rainfall system, and an automatic control and monitoring system electrically connected with the rainfall artificial climate chamber; therainfall artificial climate chamber comprises a rainfall system, a temperature and humidity regulating system, a fresh air system, a light source system and a CO2 concentration regulating system, anda seedbed and experimental plants are placed at the bottom of the rainfall artificial climate chamber. The device simulates and studies the influence process of changes of meteorological factors including temperature, humidity, CO2, light and the like and the complex climatic conditions of plant sites for migration of nuclides in a terrestrial ecosystem.