|Table of Contents|

Characteristics of Vegetation Cover Change in Xinjiang Based on NDVI

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年22
Page:
145-154
Research Field:
Publishing date:

Info

Title:
Characteristics of Vegetation Cover Change in Xinjiang Based on NDVI
Author(s):
MA Nan1; BAI Tao1; 2; CAI Zhaozhao1; 2; LI Dongya1
(1.College of Computer and Information Engineering，Xinjiang Agricultural University，Urumqi，Xinjiang 830052；2.Xinjiang Agricultural Informatization Engineering Technology Research Center，Urumqi，Xinjiang 830052)
Keywords:
Xinjiang; vegetation; GEE; space-time change; change trend
PACS:
-
DOI:
10.11937/bfyy.20221534
Abstract:
The vegetation ecosystem in Xinjiang is fragile，which is the key area for long-term protection and attention.With the help of GEE platform，the normalized vegetation index (NDVI) data provided by NASA were obtained，and the spatial-temporal changes and future trends of vegetation cover in Xinjiang during the growing season (April to October) from 2000 to 2021 were studied by means of means method，difference method，trend analysis method，stability analysis method，Hurst index and other methods.The results showed that,1) the vegetation coverage in Xinjiang showed a slight increase at the rate of 0.001 4 each year in the past 22 years，with a higher spatial distribution in the north and northwest and a lower spatial distribution in the south and southeast.2) In Xinjiang，85.2% of the vegetation cover increased，while 14.8% of the vegetation cover decreased.The vegetation cover increased significantly in Tacheng Area，Yili Kazak Autonomous Prefecture，northern Bayingolin Mongolian Autonomous Prefecture and the oases around the basin.The significant decrease was found in Shihezi，Urumqi，Kashgar，Hotan，etc.3) In recent 22 years，the vegetation coverage in Xinjiang fluctuates significantly.The average hurst index is 0.44，indicating strong reverse persistence.Therefore，ecological restoration and protection of vegetation should be further strengthened in the future.

References:

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Last Update: 2023-01-19