Method for accurately simulating response of grassland soil seed bank to soil temperature increase

A soil seed bank and grassland technology is applied in the field of simulating the response of soil seed banks to soil temperature increase, which can solve the problems of uneven soil temperature changes, not easy to stabilize, and cannot accurately quantify the temperature increase range, and achieves convenient operation and tools. Simple, powerful results

Inactive Publication Date: 2016-06-22
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems that the traditional heating tube method has uneven soil temperature changes, is not easy to stabilize, and cannot accurately quantify the temperature increase range. Scientific study of effects of elevated soil seed banks on grassland ecosystems provides basis

Method used

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  • Method for accurately simulating response of grassland soil seed bank to soil temperature increase
  • Method for accurately simulating response of grassland soil seed bank to soil temperature increase
  • Method for accurately simulating response of grassland soil seed bank to soil temperature increase

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specific Embodiment approach 1

[0026] Specific implementation mode one: the method for accurately simulating the response of grassland soil seed bank to soil warming in this implementation mode is carried out according to the following steps:

[0027] 1. Sampling of the soil seed bank: In the selected grassland sample plot, select a sampling point, dig soil with a side length of 5-20cm and a depth of 5-30cm, or dig a soil body with a diameter of 5-20cm and a depth of 5 For a soil column of -30cm, fully mix 3-20 soil columns or soil bodies as one repetition, take a total of 5-10 repetitions, and clean the soil samples;

[0028] 2. Punching holes in the germination vessel: select a cylindrical flowerpot or a conical flowerpot, mark the first point with a marker pen at a distance of 7cm from the upper port of the flowerpot, and mark the second point at a horizontal distance of 3cm from the first point. On the other side of the pot that is symmetrical to the first point and the second point, mark the third poin...

specific Embodiment approach 2

[0037] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the cleaning of the soil sample in step 1 is to remove the plant rhizomes and stone impurities in the soil sample. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0038] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the size of the cylindrical flower pot in step 2 is: 20-25 cm in diameter and 18-20 cm in height. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for accurately simulating the response of a grassland soil seed bank to soil temperature increase, relates to a method for simulating the response of a soil seed bank to soil temperature increase and aims at solving the problem that a traditional heating tube method is non-uniform in soil temperature change, is easily unstable and cannot accurately quantify temperature increase amplitude. The method comprises the steps that 1, the soil seed bank is sampled; 2, a germination utensil is punched; 3, germination utensil holes are protected; 4, a carbon fiber heating cable is laid; 5, a culture medium is charged; 6, a temperature probe is buried; 7, the heating cable is connected with the temperature probe; 8, the temperature increase amplitude is set; 9, the soil seed bank sample is spread; 10, conventional watering management is performed. The method adopts the simple tools, is convenient to operate and remarkable in effect, can accurately increase the temperature increase amplitude, performs automatic power off after the temperature is reached and is used for simulating the response of the soil seed bank to the soil temperature increase.

Description

technical field [0001] The invention relates to a method for simulating the response of a soil seed bank to soil temperature increase. Background technique [0002] The study of global change has become a frontier topic that drives the research of earth science and related disciplines, and has always been highly concerned by the academic community. The IPCC report (2013) pointed out that the average global temperature has increased by 0.76°C in the past 150 years, and the rate of increase is 0.2°C every 10 years. Most of the current research on the response and adaptation of ecosystems to global change is based on the 2°C warming threshold proposed in the Copenhagen Agreement, but more attention is paid to the impact of temperature changes, which will affect the extent of soil warming and temperature warming. There are differences that are not well studied. The research results of 292 sites in the United States show that the temperature rises by 0.11°C every decade, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/00A01G31/02
CPCA01G31/00A01G31/02Y02P60/21
Inventor 马红媛张俊卿武海涛梁正伟李伟
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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