近20年海南岛植被生态质量变化特征分析  

Analysis on the change characteristics of vegetation ecological quality in Hainan Island in recent 20 years

作　　者：韩静 张国峰[1,2] 李伟光[1,2] 张明洁[3] 赵婷 HAN Jing;ZHANG Guofeng;LI Weiguang;ZHANG Mingjie;ZHAO Ting(Hainan Institute of Meteorological Science,Haikou 570203,China;Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province,Haikou 570203,China;Climate Center of Hainan Province,Haikou,Hainan 570203,China)

机构地区：[1]海南省气象科学研究所,海口570203 [2]海南省南海气象防灾减灾重点实验室,海口570203 [3]海南省气候中心,海口570203

出　　处：《生态科学》2022年第1期20-30,共11页Ecological Science

基　　金：海南省自然科学基金青年基金项目(419QN330);国家自然科学基金(41765007);海南省基础与应用基础研究计划(自然科学领域)高层次人才项目(2019RC359)。

摘　　要：海南是国家生态文明试验区,是我国生态环境最好的省份之一。基于2000—2019年MODIS—NDVI海南岛植被覆盖度、植被净初级生产力、植被生态质量指数及地面气象观测资料,分析了海南岛植被生态质量变化情况以及气象条件对植被生态质量的影响。结果表明:2000年以来,海南岛植被生态质量指数呈增大趋势,植被生态质量整体向好。海南岛植被覆盖度平均每年增加0.52%,2019年达到75.4%;植被NPP平均每10年增加55.9 g·m^(-2),2019年NPP为1139.4 g·m^(-2);近20年,海南岛植被生态质量指数的平均值为75.0。植被覆盖度和NPP的变化与气候因子、人类活动等有着密切的关系。利用遥感手段监测海南岛植被生态质量对提高决策的科学性和时效性具有重要意义。Hainan is a national ecological civilization pilot zone and one of the best provinces in ecological environment in China.The spatial and temporal distribution of the fractional vegetation cover(FVC),net primary productivity(NPP),and vegetation ecological quality index,which were produced by using the MODIS normalized difference vegetation index(NDVI),and the impact of meteorological conditions on vegetation in Hainan Island from 2000 to 2019 were analyzed.The results show that since 2000,the vegetation ecological quality index of Hainan Island has shown an increasing trend.The average FVC of Hainan Island,which reached 75.4%in 2019,increased by 0.52%per year.The NPP,which was 1139.4 g·m^(-2) in 2019,increased by 55.9 g·m^(-2) every 10 years.In recent 20 years,the average value of the vegetation ecological quality index was 75.0.The changes of FVC and NPP were closely related to climate factors and human activities.This study shows that it is of great significance for improving the scientificity and timeliness of decision-making to monitor the vegetation ecological quality in Hainan Island using remote sensing.

关 键 词：植被覆盖度 植被净初级生产力 生态质量指数 海南岛 

分 类 号：P49[天文地球—大气科学及气象学]