4.7 Article

LAI-indicated vegetation dynamic in ecologically fragile region: A case study in the Three-North Shelter Forest program region of China

期刊

ECOLOGICAL INDICATORS
卷 120, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.ecolind.2020.106932

关键词

Three-North Shelter Forest Program; LAI; Vegetation Dynamics; Ecological Restoration

资金

  1. National Key Research and Development Program of China [2016YFB0501404]
  2. National Natural Science Foundation of China [41701391, 61841101]
  3. Ningxia Key Research and Development Program [2018BEG03069]
  4. Fundamental Research Funds for the Central Universities [2014QD02]

向作者/读者索取更多资源

The Three-North Shelter Forest Program (TNSFP) region in China is an important ecological area covering over 42.4% of China's land. Despite various ecological restoration projects implemented, evaluation work has been limited. Leaf area index was proposed as an indicator to evaluate the ecological restoration situation, with analysis conducted using GLASS LAI dataset from 2000 to 2015. Forest cover slightly increased, mainly in regions with annual precipitation greater than 400 mm, while grassland area decreased.
The Three-North Shelter Forest Program (TNSFP) region of China is an important ecological region covering more than 42.4% of China's land area. Several ecological restoration projects have been implemented in this region, but evaluation work is relatively limited partly due to the selection of suitable remote sensing products. In this study, leaf area index is proposed as a suitable indicator to evaluate the ecological restoration situation as it is an indicator reflects the growth of green vegetations. The Global Land Surface Satellite (GLASS) LAI dataset and land cover dataset from 2000 to 2015 were adopted and analyzed in this study. The forest cover area slightly increased, while the grassland area decreased. Although large-scale forestation movements were carried out across the entire TNSFP region, the forest growth conditions mainly improved in regions with an annual precipitation greater than 400 mm. Furthermore, LAI-precipitation correlations were very high (r greater than 0.6) in the regions across 400 mm isohyets, but lower (r < 0.4) far away from 400 mm isohyets. In relatively arid regions, forest growth did not show an obvious increase trend and sometimes a decrease trend. The increase in the LAI of these regions was mainly due to the restoration of grassland. Therefore, although LAI in most of the TNSFP region showed increasing trends, it is still not sufficient to state that these trends were caused by forestation projects in China.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据