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首页> 外文会议>IFIP WG 5.14 International conference on computer and computing technologies in agriculture >Research on Vegetation Ecologic Quality Index of Rocky Desertification in Karst Area of Guangxi Province Based on NPP and Fractional Vegetation Cover Since 2000
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Research on Vegetation Ecologic Quality Index of Rocky Desertification in Karst Area of Guangxi Province Based on NPP and Fractional Vegetation Cover Since 2000

机译：基于NPP和植被覆盖度的2000年以来广西喀斯特地区石漠化植被生态质量指数研究。

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Karst rocky desertification is a kind of special and complicated surface form. Study established the Net primary productivity (NPP) estimation model based on the use of solar energy utilization of remote sensing data model in rocky desertification region of Guangxi province and the fractional vegetation cover (VFC) is obtained by the method of sub-pixel decomposition model. The comprehensive analysis method was used to establish vegetation ecologic quality index by using NPP and fractional vegetation cover to monitor the Rocky Desertification in the study area from 2000 to 2016, and mapping vegetation ecologic quality index grade classification. Results show that: (1) In 2016, vegetation ecologic quality index in rocky desertification region of Guangxi province is 87.6, the highest since 2000. Hechi city is the best in Guangxi Province. (2) From 2000 to 2016. vegetation ecologic quality index annual growth has a 1.04, the highest is 87.6 (in 2016) and the lowest is 63 (in 2004). The ecological restorations and environmental control projects have achieved remarkable results. (3) Great grade. Good grade and normal grade areas can account for 94.5%. And vegetation ecologic quality index decreased obviously in some relative development regions, such as Guilin city and Hezhou city.
机译：喀斯特石漠化是一种特殊而复杂的地表形式。基于遥感数据模型利用太阳能在广西石漠化地区建立了净初级生产力（NPP）估算模型，并通过亚像素分解模型获得了植被覆盖度（VFC）。 。采用综合分析法，通过NPP和植被覆盖率监测研究区2000 — 2016年石漠化程度，绘制植被生态质量指数等级分类图，建立植被生态质量指数。结果表明：（1）2016年，广西石漠化地区植被生态质量指数为87.6，为2000年以来最高。河池市为广西最好。 （2）从2000年到2016年。植被生态质量指数的年增长率为1.04，最高为87.6（2016年），最低为63（2004年）。生态修复和环境治理项目取得了显著成效。 （3）好成绩。成绩好的和正常的成绩占94.5％。在桂林市和贺州市等相对发达地区，植被生态质量指数明显下降。

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