Title: Vegetation Spatial and Temporal Variation Analysis Based on the Mann-Kendall Patternsin the Agricultural-Pastoral Areas
Abstract: The Agricultural-Pastoral Areas in northern China is a farming grazing transitional zone, vegetation ecological characteristics is one of the important indicators reflecting the regional ecological quality, so the analysis of the regional vegetation ecological characteristics of space and time variation law is of great significance. This article based on time series MODIS-NDVI data and land cover data, using the average method, piecewise linear regression method and Mann-Kendall analysis method,to the north patterns in 2001-2013 annual NDVI change trend, NDVI in various regions, especially in poor ecological restoration area change tendency were analyzed. Results were showed that the time scale, the agriculture and animal husbandry ecotone vegetation ecological characteristics in a slow recovery, and vegetation restoration in recent years faster than in the past ten years; from the point of space scale, Shanxi and Heilongjiang area's vegetation restoration area ratio is the largest, fastest recovery rate, vegetation recovery is the most obvious area; Qinghai and Hebei province in recent years, the overall recovery of vegetation in the trend, but there are relatively large areas of significant regional vegetation degradation trend; ecologically fragile change and human activity is relatively in Qinghai and Hebei regional vegetation restoration is not obvious.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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