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首页> 外文期刊>Catena: An Interdisciplinary Journal of Soil Science Hydrology-Geomorphology Focusing on Geoecology and Landscape Evolution >Quantifying the relative contribution of natural and human factors to vegetation coverage variation in coastal wetlands in China
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Quantifying the relative contribution of natural and human factors to vegetation coverage variation in coastal wetlands in China

机译：量化自然和人类因素对中国沿海湿地植被覆盖范围的相对贡献

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摘要

Vegetation coverage in coastal wetlands has been significantly altered in response to multiple disturbances over recent decades. However, the major driving factor of vegetation coverage in coastal wetlands remains unclear, with natural and human factors playing interactive roles at the national scale. To identify the major controls of vegetation coverage in coastal wetlands, structural equation modeling (SEM) was conducted to quantify the relative contribution of natural and human factors to vegetation coverage in coastal wetlands in China over a 16-year period (2000-2015). The results showed that, in brief, vegetation coverage was slightly degraded (k = -0.0035) over the 2000-2015 period. The area with a probability of vegetation coverage degeneration >= 80% covered 16.6% of the study area. Most annual mean vegetation coverage was lower but improved near the sea, with inverse results obtained near land. In 2000, humanl (population and GDP, r = -0.31) and topography (r = 0.32) were the major controls of vegetation coverage. The vegetation coverage (2000) played the most important and positive role (r = 0.62, r = 0.66) in the vegetation coverage in 2015. Our findings highlight that the major drivers of vegetation coverage in coastal wetlands changed with time and selected variables.
机译：近几十年来，沿海湿地的植被覆盖率受到多扰动的显着改变。然而，沿海湿地植被覆盖的主要驱动因素仍不清楚，自然和人为因素在全国范围内扮演互动角色。为确定沿海湿地植被覆盖的主要控制，进行了结构方程模型（SEM），以量化了16年期间沿海湿地植被覆盖的相对贡献（2000-2015）。结果表明，在2000 - 2015年期间，植被覆盖率略微降解（k = -0.0035）。植被覆盖率变性概率的区域> = 80％涵盖了研究区的16.6％。大多数年度平均植被覆盖率较低，但在海附近有所改善，在陆地附近获得逆效果。 2000年，人类（人口和GDP，R = -0.31）和地形（R = 0.32）是植被覆盖的主要控制。植被覆盖范围（2000）在2015年在植被覆盖范围内发挥了最重要的和积极的作用（r = 0.62，r = 0.66）。我们的调查结果强调了沿海湿地植被覆盖的主要驱动因素随时间和选定的变量而变化。

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