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Impact of land use and land cover changes on carbon storage in rubber dominated tropical Xishuangbanna,South West China

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Ecosystem Health and Sustainability 2021年第1期7卷 121-134页

作者： Chaya Sarathchandra Yirga Alemu Abebe Fiona Ruth Worthy Iresha Lakmali Wijerathne Huaixia Ma Bi Yingfeng Guo Jiayu Huafang Chen Qiaoshun Yan Yanfei Geng dayani sweragoda Li-Li Li Yang Fengchun Sriyani Wickramasinghe Jianchu Xu State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina University of Chinese Academy of Sciences Beijing 100049China Department of Biological Science Faculty of Applied SciencesRajarata University of Sri LankaMihintale Sri Lanka State Key Laboratory of Super Lattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing China Department of Electrical and computer engineering Faculty of Electrical EngineeringInstitute of TechnologyHawassa UniversityHawassaEthiopia World Agroforestry Centre(ICRAF) East and Central Asia Regional OfficeKunming YunnanChina Ailaoshan Station for Subtropical Forest Ecosystem Studies Chinese Academy of SciencesJingdongYunnan College of Tea Science Guizhou UniversityGuiyang China Carbon Consulting Company Colombo Sri Lanka Center for Integrative Conservation Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnanChina Yibin Vocational and Technical College YibinSichuanChina School of Chinese Medicinal Material Resources Guangdong Pharmaceutical UniversityChina

Land use and land cover(LULC)play a significant role in carbon regulation.South-China accounts for~65%of China’s carbon sink.In Xishuangbanna(South-China),rubber is expanding rapidly creating an urgent need to understand and monitor LULC change and how spatial variation affects carbon storage(CS).This is vital for the formation and implementation of better land use management practices.We studied LULC changes of 22-year period;addressing how these changes have affected the CS.We quantified LULC changes between1988 and 2010 using remote sensing methods and calculated CS changes using InvEST.Results showed that between 1988 and 2010,the rate of deforestation accelerated to 203.2 km^(2)y^(−1)and~23%of forest were lost.Conversion of natural forest to rubber was responsible for 78%of this deforestation.Rubber expansion rate was 153.4 km^(2)y^(−1).Changes to LULC drove a temporal CS reduction 0.223 Tg C/km^(2).Local stakeholders have strong economic interest in converting land to more profitable plantations.Government efforts is required to control land conversion through new policies and incentives to retain natural forest.Assessment of specific potential land use change will be required to avoid promoting the conversion of high carbon storage land uses to low carbon storage land uses.

关键词： Carbon storage deforestation economic plantations ecosystem services land cover changes land use

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