GB/T 44609-2024Monitoring technical rule for Schistocerca gregaria (English PDF)

3.1 Prediction of potential geographical distribution

By collating information such as pest biology, distribution data of the areas where pests have occurred, and climate and environmental data, the potential habitat of pests can be predicted. Area and suitability.

Note. Various adaptability prediction models have been widely used, including CLIMEX model, geographic information system (GIS), maximum entropy algorithm model (MaxEnt), etc.

3.2 potential geographical distribution

Areas suitable for the growth and development of desert locusts.

Note. Suitable habitats have the same or similar ecological environment, where locusts can form a certain population size and may cause harm.

3.3 observation site

A sample area established for long-term surveys to systematically monitor the biology and ecology of locusts in a certain area.

Note. The observation plots can represent the locust occurrence, natural environmental conditions, grassland productivity and average utilization level in the region.

3.4 Scanning sampling method

The operator walks against the wind in a straight line or broken line at a normal pace, and uses a standard sweep net to sweep and catch vegetation closely. Each 100 nets back and forth is recorded as one Unit, a method for statistically analyzing the types, numbers, ages and other related data of locusts in the net.

3.5 Pheromone

Secreted from the secretory glands of an insect individual and excreted outside the body, it can affect the behavior, development, and reproduction of other individuals of the same or different species. of chemical substances.

Note. Pheromones generally include sex pheromones, aggregation pheromones, alarm pheromones, marking pheromones and tracer pheromones.

3.6 trap

An instrument that uses the insect's attraction to pheromones to lure and capture insects.