Drought evaluation system for continental river ternary structure

Abstract

The invention discloses a drought evaluation system for a continental river ternary structure. The method comprises the following steps: 1) performing division evaluation of drought; 2) constructing mountainous area drought evaluation indexes; 3) constructing desert region drought evaluation indexes; 4) constructing oasis region drought evaluation indexes; 5) performing drought evolution rule analysis, namely performing drought evolution rule analysis on a mountainous area, a desert region and an oasis region of a continental river drought region according to analysis of the steps 2, 3 and 4. Compared with the prior art, the method provided by the invention has the advantages that a natural-artificial binary water circulation theory is taken as a principle line, a drought evaluation system suitable for a continental river drought region 'high mountain-desert-oasis' ternary structure is constructed from the aspect of a water resource system, the problem of difficultly evaluating the drought in the continental river drought region for a long time is solved, and characteristics of drought events are scientifically and comprehensively reflected. The drought evaluation system can be widely applied to drought evaluation on the continental river drought region, and is especially applicable to drought quantification evaluation on the Aksu river drainage basin.

Description

technical field [0001] The invention relates to the technical field of drought monitoring, in particular to a drought evaluation system suitable for the ternary structure of "alpine-desert-oasis" in inland river arid areas. Background technique [0002] The fifth IPCC assessment report on climate change pointed out that in the past half a century, almost all regions of the world have experienced warming, and the fastest warming region is the mid-latitude region of the northern hemisphere. The arid region in Northwest my country is located in the hinterland of Eurasia in the mid-latitude zone, and is a sensitive area under global climate change. The water resource environment in this area is special, the ecological environment is relatively fragile, and groundwater and surface water exchange frequently. Water resources have become a key factor that restricts social and economic development and affects ecological security, and plays a vital role in the sustainable development ...

AI Technical Summary

Problems solved by technology

[0005] The main disadvantage of these methods is that the evaluation is based on a single or several links of the water cycle, which splits the integrity of the water cycle, and it is difficult to reflect the natural and social attributes of drought, and it is difficult to characterize the dual characteristics of randomness and determinism of drought.

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