Precipitation control system for simulating drought conditions in alpine grassland and control method thereof
A control system and drought technology, applied in the fields of botanical equipment and methods, watering devices, gardening, etc., can solve the problems of difficult control, inaccurate measurement, expensive, etc., achieve good toughness, prevent runoff interference, and reduce marginal effects. Effect
Active Publication Date: 2018-03-20
青海省气象科学研究所
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[0004] However, the current simulation method requires more human identification, inaccurate measurement, difficult control, or extremely expensive. Therefore, it is necessary to provide a continuous, accurate, automatic and relatively economical precipitation that can more accurately simulate the drought situation in the alpine grassland Control methods are particularly important
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[0035] The invention provides a precipitation control system that simulates the drought conditions of alpine grasslands, such as Figure 1 to Figure 3 As shown, it includes several plot units 1, a shelter system set on the plot unit 1, an automatic rain gauge set in the plot unit, a plot isolation plate 23 for isolating the plot unit 1, and settings The soil root layer temperature and humidity salt system in the middle of the sample unit 1, the soil conditions include soil moisture content, temperature and electrical conductivity; the rain shelter system 2 includes rain shielding grids and brackets 22; the rain shielding grids are composed of several transparency It is composed of a high groove grid 21. The groove grid 21 is obliquely arranged on the support 22, and the inclination is preferably 30 degrees, and is fixed on the beam as much as possible; the aboveground part of the sample isolation plate 23 is 0.15m-0.35m, preferably 0.20m, used to place rainwater runoff interfer...
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The invention discloses a precipitation control system for simulating drought conditions in an alpine grassland and a control method thereof. The precipitation control system comprises a plurality ofsample plot units, a rain shelter system arranged on the sample plot units, an automatic rain gauge, sample plot isolating plates for isolating the sample plot units and a soil root layer temperatureand humidity salt system disposed underground in the middle of the sample plot units. The rain shelter system comprises rain sheltering grids and supports; the rain sheltering grids comprise a plurality of highly transparent groove grating plates; the groove grating plates are obliquely arranged on the supports; the ground portion of the sample plot isolating plates is 0.15m to 0.35m, and the underground portion is 0.15m to 0.35m; and a sample plot isolation belt is arranged between the sample plot units. The precipitation control system has reasonable design, and the number of repetitions ofthe sample plots follows the China Agricultural Meteorological Bureau's agricultural and animal husbandry experimental observation specification. The precipitation control system with high firmness degree can prevent alpine grassland winds and is relatively flexible and movable to meet the dynamic and random high-difficult test requirements. The precipitation control system only involves in the rain sheltering and adopts natural recovery for the sample plots since the natural recovery of the sample plots is more reasonable.
Description
Technical field [0001] The invention relates to the field of drought disaster mechanism research, in particular to a precipitation control system and a control method for simulating the drought conditions of alpine grasslands. Background technique [0002] Alpine grassland is a type of vegetation in grassland communities. It is generally above 4000 meters above sea level. The environment is cold and humid, with strong sunlight, enhanced ultraviolet rays, thin air, soil temperature higher than air temperature, great temperature difference between day and night, annual average temperature less than 1℃, short plant growth season, many plants are low and bushy, and leaf area is reduced , The root system is shallow, and the plants form dense clumps. [0003] The precipitation in the grassland will greatly affect the growth of grasses and other plants, and has a significant impact on the ecological environment and the atmosphere. Therefore, simulating the drought in the grassland is of...
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IPC IPC(8): A01G25/16
CPCA01G25/167
Inventor 李林肖宏斌颜亮东魏永林李璠祁栋林肖建设李甫
Owner 青海省气象科学研究所