环县天然草原资源年际动态分析

INTERANNUAL DYNAMIC ANALYSISOF NATURAL GRASSLAND RESOURCESIN HUAN COUNTY

为了解环县天然草原资源状况,本文对其在2017~2022年连续6 a的植被高度、盖度、物种数和干草产量进行了监测和年际动态分析。结果表明:植被高度在2018年最高,在其他年份均有所下降,2019年和2020年为最低;植被盖度在2017~2022年间均在69.00%以上,且年际间无显著差异;物种数在2017~2020年间无显著差异,2021年和2022年较2020年分别增加了46.67%和44.00%;干草产量在2018年高于其他年份,之后呈现逐渐下降趋势,但均在900.00kg/hm^(2)以上。以上结果为环县天然草原的保护、利用及可持续发展提供了依据。

In order to understand the natural grassland resources in Huan county,the vegetation height,coverage,species numbers and hay yield in Huan county were monitored and annual dynamic analyzed for six consecutive years from 2017 to 2022.The results showed that the vegetation height was the highest in 2018,decreased in other years,and was the lowest in 2019 and 2020;the vegetation coverage was above 69% in 2017 and 2022,there was no significant difference between them;there was no significant difference in the number of vegetation species between 2017 and 2020,and the number of vegetation species increased by 46.67% and 44.00% in 2021 and 2022 compared with 2020,respectively;the hay yield of vegetation was significantly highest in 2018 than in other years,and showed a trend of gradual decline after 2018,but all of them were above 900.00 kg/hm^(2).The above results provide the basic theoretical basis for the protection,utilization,and sustainable development of natural grasslands in Huan county.