Watershed ecosystem service value space transfer evaluation and mapping method

Abstract

The invention provides a watershed ecosystem service value space transfer evaluation and mapping method, which combines parameters such as land utilization type data, crop sowing area, unit area yield, grain crop nationwide average price and the like to calculate the ecosystem service values of the upstream, the middle and the downstream of a watershed. The method comprises the steps of: calculating ecological system service value space circulation of the upstream, the middle and the downstream of the drainage basin and ecological system service value transfer relation of the upper, the middle and the lower of the drainage basin by utilizing results of the field intensity model and the breaking point model, proposing a mapping method, and drawing a drainage basin transfer relation graph. Compared with the prior art, the method has the beneficial effects that different types of ecosystem service functions are distinguished by utilizing an equivalent factor rule, the value quantity of different ecosystem service functions is constructed by utilizing a quantifiable standard, and evaluation is performed in combination with a system area. In addition, the calculation method is simple, easy to operate, small in data demand and suitable for ecological system value circulation evaluation of a large-area drainage basin.

Description

technical field [0001] The present invention relates to the field of ecological service value evaluation, and more specifically, relates to a method for evaluating and mapping the spatial transfer of watershed ecosystem service value. Background technique [0002] Ecosystem services refer to all ecosystem goods and services that contribute to human survival and quality of life. On a large scale, it has the functions of regulating climate, purifying pollution, conserving water sources, maintaining water and soil, preventing wind and sand, mitigating disasters, and protecting biodiversity, thereby providing a good ecological environment for human survival and development. The development of different regions in the Dongjiang River Basin is extremely unbalanced, especially between the upstream and downstream. The Jiangxi section is the upper reaches of the Dongjiang River Basin, which provides clean water resources, high-quality air, water conservation, and clean power resource...

AI Technical Summary

Problems solved by technology

The evaluation process of these two technologies is relatively objective; however, due to the variety of ecosystem service functions, there are many difficulties in actual evaluation, and it is difficult to truly reflect the actual value of ecosystem services

The simulated market technology measures the ecological service function without an alternative market by artificially constructing a hypothetical market. The basic information of this method is easy to obtain and has strong operability, but it is affected by many subjective factors and has certain limitations.

[0004] The existing ecosystem value assessment methods cannot objectively and truly reflect the value of the ecosystem, thus resulting in inaccurate assessment values, which have little reference significance and low practicability in ecological compensation

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