Model for evaluating different degradation degrees of meadow grassland and an establishing method and application thereof

A degraded, grass-landed technology, used in data processing applications, character and pattern recognition, systems based on fuzzy logic, etc.

Active Publication Date: 2019-05-31
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is still a lack of comprehensive, simple and pra...

Method used

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  • Model for evaluating different degradation degrees of meadow grassland and an establishing method and application thereof
  • Model for evaluating different degradation degrees of meadow grassland and an establishing method and application thereof
  • Model for evaluating different degradation degrees of meadow grassland and an establishing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Embodiment 1, grazing intensity causes the impact of different degradation degrees on meadow grassland

[0082] Experimental design: The natural grassland with the community type of Leymus chinensis + forb community was used as the grazing sample plot, and a total of 6 levels of grazing intensity gradient treatments were set up, and the stocking rates were: G 0.00 :0.00Au / hm 2 , G 0.23 :0.23Au / hm 2 , G 0.34 :0.34Au / hm 2 , G 0.46 :0.46Au / hm 2 , G 0.69 :0.69Au / hm 2 , G 0.92 :0.92Au / hm 2 .

[0083] After ten years (2009-2018) of grazing experiments, with the continuation of grazing time, different grazing intensities have gradually produced significant changes in the characteristics of vegetation communities and soil characteristics, resulting in a series of obvious mildly degraded, moderately degraded and severely degraded areas . The specific data are as follows:

[0084] 1. Changes in community characteristics after continuous control of grazing intensity f...

Embodiment 2

[0096] Embodiment 2. Establishing a model for assessing different degrees of degradation of meadow grassland

[0097] In order to study the interaction between plant communities and soil factors under different grazing degradation degrees of meadow grassland and select the index system for diagnosing the degradation degree of meadow grassland, the Leymus chinensis + forb community non-grazing area (G0, That is, the grazing intensity is G 0.00 ), light grazing use area (G1, that is, the grazing intensity is G 0.23 ), moderate grazing utilization area (G2, that is, the grazing intensity is G 0.46 ), the extreme grazing utilization area (G3, that is, the grazing intensity is G 0.69 ) using the "Canonical Correlation Analysis (CCA)" method to analyze the correlation between plant communities and soil factors.

[0098] In each degree of degradation, the plant community variable group (i.e. the first vegetation characteristic group) consists of variables or vegetation indicators:...

Embodiment 3

[0285] Embodiment 3, method inspection

[0286] Taking the data that is not used in the establishment of the model of Example 2 in Example 1 as the data of the meadow grassland to be evaluated, calculate the indicator degree d according to the method of Example 2 i According to the threshold value of Example 2, the degradation level of the meadow grassland to be evaluated is judged, and the result is completely consistent with the actual situation. It proves that the method of this application is very accurate.

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Abstract

The invention discloses a model for evaluating different degradation degrees of meadow grassland and an establishing method and application thereof. The method aims at natural grassland with differentdegradation degrees caused by different utilization degrees of meadow grassland. Through a field control experiment, a field ecology investigation method is adopted. the response mechanism of meadowgrassland degradation to human activities (controlling grazing) is studied;A principal component analysis is made, a matrix through typical correlation and fuzzy mathematics are establsihed; The an indication degree diagnosis method of a degradation evaluation system is established with different utilization degrees, grassland vegetation and soil index systems with different utilization modes anddifferent degradation degrees are screened, indication degrees of different degradation degrees is acquiredand a meadow grassland degradation quantitative evaluation index system indication degree diagnosis method with relatively high scientificity and operability is established. The method has practical significance in establishment of meadow degradation index system evaluation, objective judgment of the degradation condition of meadow and promotion of production and environmental protection of meadow animal husbandry.

Description

technical field [0001] The invention relates to the field of grassland ecosystem protection, in particular to a model for evaluating different degradation degrees of meadow grassland and its establishment method and application. Background technique [0002] my country's grassland area is 6 billion mu, accounting for 41.7% of the country's land area, of which the northern meadow and meadow grassland area is about 596 million mu, which is the most productive and diverse grassland in the northern pastoral area, and its livestock carrying capacity is equivalent to other temperate grassland types The sum of its ecological and production functions has a pivotal position. Compared with grassland types in arid regions, meadow grasslands have more diverse utilization patterns and more complex degradation processes and mechanisms. Since the 1980s, more than 90% of grasslands in my country have degraded, and the productivity of northern meadow grasslands has dropped by 20-50%. The prop...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26G06K9/62G06N7/02
Inventor 闫瑞瑞辛晓平沈贝贝陈宝瑞
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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