CollectHomepage AdvertisementContact usMessage

Arid Land Geography ›› 2023, Vol. 46 ›› Issue (2): 253-263.doi: 10.12118/j.issn.1000-6060.2022.202

• Land Use and Carbon Emissions • Previous Articles     Next Articles

Temporal and spatial evolution of ecosystem service value under land use change in Xinjiang from 1980 to 2020

MA Li’na1(),ZHANG Feiyun1(),ZHAI Yuxin1,TENG Lun1,KANG Jianguo2   

  1. 1. School of Public Management, Xinjiang Agricultural University, Urumqi 830052, Xinjiang, China
    2. School of Resources and Environment, Hunan Agricultural University, Changsha 410128, Hunan, China
  • Received:2022-05-07 Revised:2022-07-19 Online:2023-02-25 Published:2023-03-14

Abstract:

With the development of the social economy, exploring the temporal and spatial evolutions of the ecosystem service value (ESV) under land use change is greatly significant in optimizing the land use structure and regional sustainable development. Based on the land use data of Xinjiang, China from 1980 to 2020 and with the support of ArcGIS and GeoDa, this study uses the unit area equivalent factor method and spatial autocorrelation to analyze the temporal and spatial evolution characteristics of the ESV under land use change in Xinjiang. The results show that the main land use types in Xinjiang from 1980 to 2020 are grassland and unused land, which accounted for 91.00% of the total area of Xinjiang. The area of cultivated and construction lands increased by 58.89% and 166.79%, respectively. The water and forest land areas decreased the most by 29.95% and 26.62%, respectively. From 1980 to 2020, the ESV in Xinjiang generally showed a change trend of “first increasing, and then decreasing”, depicting a net decrease of 1114.51×108 yuan or 6.68%. From the spatial distribution perspective, the high-and second high-value areas of the ESV in Xinjiang were mainly distributed in Altai, Kunlun, and Tianshan Mountains (i.e., Three Mountains) and the Ili River Valley. The medium- and second low-value areas were distributed in the oasis area. The low-value area was mainly distributed in the basin and desert areas. From 1980 to 2015, the ESV in Xinjiang only slightly changed. In contrast, from 2015 to 2020, that in the middle Tianshan Mountains significantly changed. During this period, the high-value area in the northern and middle Tianshan Mountains decreased by 75.29% and was replaced by the medium- and second low-value areas. The middle- and second low-value areas increased by 13.64% and 10.78%, respectively. The low-value areas move toward some medium-value ones. From the perspective of the spatial autocorrelation of the ESV, the local correlation and hot spot analysis showed the spatial distribution characteristic of high in the west and low in the east. The high-high-concentration and hot spot areas were distributed in the Three Mountains area, while the low-low-concentration and cold spot areas were distributed in the basin and desert areas. The water and forest land area decline is one of the primary reasons for the total ESV decline in Xinjiang from 2015 to 2020.

Key words: ecosystem services value, spatial-temporal variation, land use change, Xinjiang