Method for evaluating influences of global changes on agricultural soil animals on basis of in-situ earth pillar displacement

A technology of farmland soil fauna and in-situ soil column, which is applied in the field of impact assessment of farmland soil fauna, and can solve problems such as poor air circulation and inconsistent climate in the treatment area

Inactive Publication Date: 2015-03-25
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of inconsistent climate between the sample plot treatment area and the external environment of the sample plot and the lack of air circulation in the sample plot processing area in the existing method, and provides a global change based on the displacement of the in-situ soil column. Soil Animal Impact Assessment Method

Method used

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  • Method for evaluating influences of global changes on agricultural soil animals on basis of in-situ earth pillar displacement
  • Method for evaluating influences of global changes on agricultural soil animals on basis of in-situ earth pillar displacement
  • Method for evaluating influences of global changes on agricultural soil animals on basis of in-situ earth pillar displacement

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specific Embodiment approach 1

[0023] Specific Embodiment 1: A method for evaluating the impact of global changes on farmland soil animals based on in-situ soil column displacement in this embodiment is carried out in the following steps:

[0024] 1. In-situ soil preparation: when the soil in the in-situ soil column removal area is not frozen after the autumn harvest, measure the earthwork in the in-situ soil column removal area, divide the measured earthwork into several groups on average, divide each earthwork The soil with a depth of 0cm-20cm is used as the plow layer, and transferred to bag A to obtain the in-situ soil bag A of the plow layer, and the soil with a depth of 20cm-100cm is used as the plow bottom layer, and transferred to bag B to obtain the plow bottom layer In-situ soil bag B;

[0025] 2. Preparation of PVC isolation box for soil animals: In the in-situ soil column moving-in area and the in-situ soil column moving-out area, a hexahedral PVC isolation box with no bottom and no cover is mad...

specific Embodiment approach 2

[0035] Embodiment 2: This embodiment differs from Embodiment 1 in that: the gauze mesh at the bottom of the PVC isolation box described in step 2 has an aperture of <10 um. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0036] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step three, the length × width × height of the soil animal PVC isolation box prepared in step three is greater than the length × width of the soil animal PVC isolation box prepared in step three. The dimension specification of the cubic earth pit of width * height is: length * width * height = 1.2m * 1.2m * 1.2m. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to the field of soil ecology, in particular to a method for evaluating influences of global changes on agricultural soil animals on the basis of in-situ earth pillar displacement. The method aims to solve the problems that a sample plot treatment area and the sample plot external environment climate are inconsistent and air in the sample plot treatment area does not circulate in an existing method. The method comprises the first step of in-situ soil preparation, the second step of manufacturing of soil animal PVC isolation boxes, the third step of moving of in-situ earth pillars, the fourth step of plant cultivation or vegetation removal, the fifth step of soil temperature and humidity monitoring and the sixth step of sampling and analyzing. According to the method, in the moving process of the in-situ earth pillars, a plough layer and a plough pan are differentiated, it is guaranteed that the layer where the soil animals are most active is located at the same position all the time, communication of the soil animals is blocked through the soil animal PVC isolation boxes, and meanwhile the bottoms of the soil animal PVC isolation boxes are covered with gauze so that normal water and nutrient circulation of soil can be kept.

Description

technical field [0001] The invention relates to the field of soil ecology, in particular to a method for evaluating the impact of global changes on farmland soil animals based on in-situ soil column displacement. Background technique [0002] Soil animals refer to animals that spend a long period of time or in a certain stage of their life history in the soil or surface litter layer. Soil animals play an important role in the decomposition of litter, the improvement of soil fertility, and the material circulation and energy flow of underground ecosystems. Previous studies on the impact of climate change on soil animals mainly controlled temperature and humidity through infrared heating tube irradiation and artificial water addition; on the other hand, the open-top air chamber was mainly used to prevent heat scattering to simulate temperature rise and water content change. The former method simulates the near-natural conditions of climate change. The problem is that there wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
CPCA01G15/00A01G22/00
Inventor 常亮吴东辉王柏凤闫修民宋理洪张兵王可洪
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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