China News Network Harbin, June 18 (Liu Xiju, Jiang Hui) On the 18th, the Harbin Meteorological Observatory announced that recently, the Harbin Meteorological Bureau, with the support of the Northeast Satellite Meteorological Data Center, organized meteorological experts to use long-sequence meteorological satellite remote sensing data. The monitoring and evaluation of vegetation ecological quality in the city in the past 20 years showed that: from 2000 to 2019, the ecological quality of vegetation in Harbin was significantly improved, and 2019 was the best in nearly 20 years.
According to the news reported by the Harbin Meteorological Observatory, since 2012, the vegetation ecological quality index of Harbin has exceeded the average of nearly 20 years, with abundant rainfall and good light and heat conditions in 2019. The vegetation ecological quality index has increased by 15.7% compared with the average of the recent 20 years The growth rate was 27.3% higher than that in 2000, with the highest growth rate, the best in nearly 20 years. Among them, the ecological quality of vegetation in Shangzhi City, Wuchang City, and Tonghe County ranked among the top three in Harbin urban counties (cities).
In the past 20 years, the ecological quality of vegetation in Harbin has shown an overall improvement trend, and the improved area accounts for 97.1% of the area of Harbin. Especially in the eastern and western agricultural areas of Harbin, the ecological quality of vegetation has improved most obviously. Shuangcheng, Bayan, Acheng, The improvement indexes of Binxian and Yilan are higher than the average of Harbin, and the improvement effect of the two cities is the most prominent. The urbanization process in the main urban area has caused the local vegetation ecological quality to deteriorate locally, but the overall is still showing a positive growth.
Net primary productivity and coverage of vegetation are the key indicators to measure the ecological quality of vegetation. The analysis shows that in the past 20 years, the net primary productivity and vegetation coverage of most areas of Harbin have shown an increasing trend, with the increased areas accounting for 97.7% and 94.6% of the city’s area, respectively. The vegetation ecological improvement index is basically the same, mainly concentrated in the agricultural areas in the west and northeast of Harbin. Among them, the increase in vegetation coverage in the agricultural areas of Yilan, Binxian, Acheng, Shuangcheng, and Wuchang is the most significant, reflecting Harbin City. Farmland production capacity has been significantly improved. The areas with the largest increase in the trend rate of vegetation coverage change in Harbin are mainly located in the forest areas in the east, southeast, middle and north, benefiting from the development of returning farmland to forests and afforestation in these areas. (Finish)