Abstract
Monitoring the spatio-temporal variation of the land-use/land cover change (LULC) and ecosystem service value (ESV) changes will help achieve regional sustainable development and management. Derong County is a part of the Hengduan Mountains area, the most crucial ecological functional area in China, and LULC has changed tremendously in the past 30 years. However, the effects of LULC changes on ecosystem services is not well understood. Based on 1992, 1995, 2005, 2013, and 2018 remote sensing images, we used visual interpretation to obtain LULC data and used global value coefficients and modified local value coefficients to assess the spatial-temporal changes of ESV and LULC from 1992 to 2018. The results showed that: (1) From 1992 to 2018, shrubland and grassland decreased, while built-up land, snow, forestland, water body, and cropland area increased. (2) The ESV with an overall decrease of 0.25 × 108 yuan, ecological projects have played a positive role in improving ESV. In contrast, the main decrease factor of ESV was the increase in agricultural economic development and urban expansion from 1992 to 2018. (3) The ESV spatial distribution indicated the value density of ESV was on the decline, and with the greatest deterioration in Dianyagong. The highest density of ESV area is distributed in Waka, and the lowest density of ESV area is distributed in Bari. This research points out the important role of Derong County in the regional life support system and provides a scientific reference for the sustainable management of dry-hot valley regions’ land resources and ecosystem services.
Highlights
Ecosystem services are closely related to human well-being, are essential to human life, and involve all the benefits that humans obtain from natural ecosystems [1]
Deforestation has been shown to have a gigantic impact on the ecosystem services value (ESV), during 1992–1995, the forestland decreased by 38782.36 hm2 and ESV decreased by 14.36 × 108 yuan
During 1995–2018, the natural forest protection projects in the upper reaches of the Yangtze River played a key role in improving the ESV, the forestland increased by 55,152.75 hm2 and ESV increased by 20.42 × 108 yuan
Summary
Ecosystem services are closely related to human well-being, are essential to human life, and involve all the benefits that humans obtain from natural ecosystems [1]. Costanza evaluated the ecosystem services value (ESV) in a quantitative manner for the first time and proposed to divide ecosystem services into 17 types, laying a foundation for research [1,2,3]. Ecosystem service values (ESVs) is a monetized form of ecosystem service functions [4,5]. The ESV has become a hot research question in ecology. The ESV has decreased in many regions, which proposed crucial challenges to human well-being and livelihoods [3,6,7,8,9,10]. Policymakers are paying more and more attention to ESV. ESVs research has received enough attention [14,15]
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