Abstract
Land use/land cover (LULC) has an important impact on the ecological environment and is crucial for calculating ecosystem service values (ESVs). However, whether and to what extent the ESVs vary when calculated by LULC product data at different spatial scales remain unclear. Data from two LULC products were used in this study, and two datasets with different spatial scales were obtained by resampling. Then, the ESVs were calculated by the equivalent factor method. Finally, the impacts of LULC on ESVs at different scales were studied, revealing the following: (1) The ESVs calculated by LULC products and by the same products at different scales are different. (2) The difference in the ESVs calculated by the two LULC datasets is approximately 28%, and the difference tends to decrease with increasing scale. (3) With an increase in the LULC scale, the overall change trend of ESVs also increases, and the increasing trend gradually moderates. In addition, the ESVs and LULC scale conform to a logarithmic relationship, and the coefficient of determination (R2) is greater than 0.7. These results have important reference value for obtaining reliable ESVs.
Highlights
Ecosystem services refers to the direct or indirect production of life support products and services through the structure, process and function of ecosystem [1]
(2) The difference in the ecosystem service values (ESVs) calculated by the two LULC datasets is approximately 28%, and the difference tends to decrease with increasing scale
To analyse how the areas of different LULC types change with the scale, the area of each LULC type at each scale is calculated in this paper, yielding numerous area change trend charts (Figure 3)
Summary
Ecosystem services refers to the direct or indirect production of life support products and services through the structure, process and function of ecosystem [1]. Ecological systems are crucial because they can directly provide all kinds of raw materials and products necessary for human survival and because they perform purification functions that play significant roles in regulating climate, reducing pollution, conserving water and biodiversity, providing disaster relief, and fixing soil, windbreaks and sand, etc.; all of these functions contribute to human survival, and ecosystem products and services are collectively referred to as ecosystem services [5]. Ecosystem services are key to our understanding of the medium- and long-term impacts of changes in biodiversity, climate, land transformation, stratospheric ozone, water and nitrogen on humans [6]. With the rapid development of remote sensing technology, increasing amounts of remote sensing data have been applied to the study of ecosystems [7,8,9,10,11]
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