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Mapping Spring Ephemeral Plants in Northern Xinjiang, China

1,2,3, 4, 1,2,*, 2,4,*, 2, 2 and 2
Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi 276000, Shandong, China
Sate Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
University of Chinese Academy of Sciences, Beijing 100049, China
College of Life Science, Shihezi University, Shihezi 832000, Xinjiang, China
Authors to whom correspondence should be addressed.
Sustainability 2018, 10(3), 804;
Received: 18 October 2017 / Revised: 8 March 2018 / Accepted: 10 March 2018 / Published: 14 March 2018
(This article belongs to the Special Issue Sustainable Wildlife Ecology and Conservation)
PDF [2798 KB, uploaded 14 March 2018]


Spring ephemeral plants (SEP) are a particular component of flora that take full advantage of water resources and temperature conditions to rapidly complete their life cycle in about two months. In China, they are mainly distributed in northern Xinjiang. They play important roles in dune stability and are precious food for the livestock and wild animals in the early spring. Northern Xinjiang is under dramatic climate changes and land-use/land-cover changes, which can affect the growth of SEP in this region. To explore how the distribution of SEP have varied under these changes, Moderate-Resolution Imaging Spectrodiometer (MODIS) Enhanced Vegetation Index (EVI) time series of two years (2000 and 2014) were applied to detect SEP in each period. The TIMESAT software was used to extract the seasonality information from the EVI data. The results show that SEP in northern Xinjiang are mainly located in the south of the Gurbantunggut desert and along the Ili Valley and piedmont hills of the mountains. In 2000, its total area was 3.83 × 104 km2, accounting for 10% of the entire region. By 2014, the total area was about 2.74 × 104 km2, with a decrease of 28.5% relative to 2000. Land-use/land-cover datasets can be used to determine whether changes in SEP over time are caused by human activities or natural factors. Combing the SEP maps with the synchronous land-use/land-cover datasets indicates that the decrease is mainly caused by natural factors, which are possibly related with the temperature and precipitation changes in this region. Human activities only contributed 4% to the decrease, with most SEP areas being replaced by croplands. The observed SEP dynamics and changes pertain only to the years with below-average precipitation. View Full-Text
Keywords: spring ephemeral plants; northern Xinjiang; MODIS-EVI; TIMESAT spring ephemeral plants; northern Xinjiang; MODIS-EVI; TIMESAT

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Qiu, Y.; Liu, T.; Zhang, C.; Liu, B.; Pan, B.; Wu, S.; Chen, X. Mapping Spring Ephemeral Plants in Northern Xinjiang, China. Sustainability 2018, 10, 804.

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