2001—2021年黑龙江省森林植被生态质量变化分析

通过统计分析及空间插值等方法，使用气象和遥感数据，分析2001—2021年黑龙江省林区主要植被生长季的气候条件及植被生态质量变化特征。结果表明：2001—2021年黑龙江省林区生长季降水量、平均气温和日照时数分别呈增加、增加和减少趋势。在水分、热量整体逐步增加的背景下，气候条件有利于改善植被生态质量。2021年生长季大部分林区植被生态质量为优和良等级；与多年平均比较，85%以上的林区呈偏好趋势，尤其是中部、东南部部分林区呈很好趋势。植被生态质量指数平均每10 a增大43，99%以上的林区呈提高趋势，特别是北部、东南部及中部部分林区改善明显。

Analysis of Variations in Forest Vegetation Ecological Quality in Heilongjiang from 2001 to 2021

In this study, by statistical analysis and spatial interpolation method, the meteorological and remote sensing data were used to analyze the climate conditions and the change characteristics of ecological quality of main vegetation in Heilongjiang forest area during the growing season from 2001 to 2021. The results showed that the precipitation and average temperature increased and the sunshine duration decreased during the growing season in Heilongjiang forest area from 2001 to 2021. As moisture and heat gradually increased, the climate conditions were conducive to improving vegetation ecological quality. The ecological quality of vegetation in most forest areas was at excellent or good level during the growing season in 2021. Compared with the average of many years, over 85% of the forest areas showed a preference trend, while some forest areas in the central and southeast showed a good trend. The vegetation ecological quality index increased by 4.3 per decade on average, over 99% of the forest areas showed an increasing trend, especially in the north, southeast and central parts of the forest.