Cultivated land resource asset ecological value assessment method and model

Abstract

The invention provides a cultivated land resource asset ecological value assessment method and model. The method comprises the following steps: acquiring basic information (including a cultivated land type of a cultivated land area to be assessed) of the cultivated land area to be assessed; calculating the positive ecological value of cultivated land resource assets in the cultivated land area to be assessed based on the type of cultivated land and and the negative ecological value of arable land resource assets, wherein the value comprises food production value, gas regulation value, air purification value, water conservation value, soil conservation value, nutrient recycling value, biodiversity value, and landscape aesthetic value; the negative ecological value of arable land resource assets comprise agricultural pollution negative ecological value, greenhouse gas emission negative ecological value and agricultural water resource consumption negative ecological value; and calculating the cultivated land resource asset ecological value of the cultivated land area to be evaluated according to the cultivated land resource asset positive ecological value and the cultivated land resource asset negative ecological value. The mode solves the problem that the economic value is more than the ecological value in cultivated land resource asset ecological value assessment (or accounting).

Description

technical field [0001] This application relates to the field of arable land resource evaluation, and specifically relates to a method and model for evaluating the ecological value of arable land resource assets. Background technique [0002] Cultivated land is an important natural resource. In addition to carrying the basic functions of food production, it also has ecological functions such as water and soil conservation, climate regulation, and farming landscape. Value is the analysis basis for the construction of ecological civilization. Affected by traditional economics and values ​​centered on GDP, the current evaluation of the value of cultivated land resources only reflects the narrow economic value and ignores the value of social security and ecological services owned by the land, resulting in a serious underestimation of the value of cultivated land resources and the loss of cultivated land. Trends are difficult to control. With the acceleration of global urbanizat...

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Problems solved by technology

[0005] The purpose of the embodiment of this application is to provide a method and model for evaluating the ecological value of cultivated land resource assets to solve the problems of standardization of existing accounting methods and localization of parameters, in order to reasonably evaluate the ecological function and value of cultivated land, and to improve the management of cultivated land resources in our country. Provide technical support for management decision-making and research, such as arable land occupation and compensation system, ecological value accounting, and ecological product value realization

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