Studies of green development trace back to 1962, when American biologist Rachel Carson published
The Silent Spring, in which she proposed that that the use of chemicals and fertilizers harmed the human being and the environment. He called on people to reflect on the environmental damages caused by economic and technological development [
2]. Ten years later, the Club of Rome, a private academic organization, published a research report titled
The Limits to Growth, which warned the world to pay close attention to the relation between human and environmental and resource consumption [
3]. As more scholars and international organizations studied the relation between economic growth and resource, environment, and sustainability, they have proposed a string of concepts such as “green economy”, “green growth”, and “green development”, and have made systematic descriptions and studies of the economy-ecology relation. In the past decade, in particular, concepts regarding economic growth, green economy, and green development have flourished around the world, and green industrial policies are drawing extensive attention and being adopted by countries to achieve green development. The United Nations Industrial Development Organization (UNIDO) has established an indicator system for industry greenization development in Asia that encompasses such aspects as natural resource, environment, and greenhouse gases (GHG) emission [
4]. The indicator system for green economy launched by United Nations Environment Programme (UNEP) measures the development of green economy on the three fronts of economic transition, resource efficiency, and social benefits [
5]. The Organization for Economic Co-operation and Development (OECD) has set up a PSR-based low-carbon economy evaluation system, which is comprised of such aspects as human activities, ecological balance, environmental quality, and natural resources [
6]. Many foreign scholars have studied industrial greening from the perspective of indicator system or input–output ratio. For instance, Styles et al. established an evaluation system of 22 indicators, including CO
2 emission and SO
2 emission, to measure the environmental emission index and evaluate the development status of plant protection industry in Ireland [
7]. Charles R. Hall gave an in-depth evaluation on the flourishing green spillover effects of relevant industries in the US with the input-output method [
8]. Martin Jänicke, by analyzing the OECD-proposed “green growth” and based on industrial data of countries like Germany, Japan, and China, proposed that we need to improve the resource productivity, such as through better energy-saving technologies (e.g., renewable energy, energy efficiency, and recycling) and economize the environment and resources to achieve sustainable growth [
9]. Domestic studies of industrial greening generally take the connotations of green development, such as resource conservation, environmental protection, and sustainable growth, as those of industrial greening. For instance, Zhong Maochu believed that “environmental industry” and “industrial greening” are limited adaptation on the industrial level to “ecological biocapacity”. He proposed an “eco-environmental consumption” quota system to measure industrial greening and promoted environmental protection industry as a way to boost industrial greening [
10]. Most scholars have evaluated industry greenization development by establishing the indicator system or comprehensive index for it or calculating its total factor productivity (TFP). Different scholars have, from different perspectives, built clearly layered greening evaluation indicator systems, covering a full range of dimensions such as economy, society, ecology, environment, and resource [
11,
12,
13,
14]. Although there is no unified definition of the connotations of industrial greening, studies so far have all measured and evaluated it from different angles and discovered its structural or technical problems in this process. Suggestions on improvement are then put forth to boost the upgrade of industrial structure or improvement of productive efficiency, hence the sustainable economic development.
An overview of other scholars’ studies of industrial greening and green industries leads to the conclusion that unlike the traditional mode of industrial development, industry greenization development is a green economic growth mode that is aimed at reducing resource consumption, raising resource efficiency, protecting and ameliorating the ecology, and achieving sustainable development of the human society. Green economy is the fundamental path to sustainability and ecological economy. The traditional industrial development mode, which only stresses the increase of economic aggregate, not only neglects environmental protection and development, but also destroys the sound environmental status while ignoring the fact that resources are limited and wastes are recyclable. If we take environmental damage and inefficient resource utilization as the opportunity cost of economic development in the future, then the subject of industry greenization development studies how to maximize industrial and economic benefits with minimal opportunity cost.
On the basis of the aforementioned studies, this paper aims to establish a simple and operable method to measure the effects of industry greenization development to make it calculable and measurable. Focused on resource conservation, we equate the decrease of resource consumption on equal technical conditions to progress in green development. Meanwhile, we valuate the decreased resource consumption and quantify the green proportion in industrial added values to measure the effect and level of industrial greening in general.