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Trade-offs between carbon sequestration, soil retention and water yield in the Guanzhong- Tianshui Economic Region of China

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Journal of Geographical Sciences 2016年第10期26卷 1449-1462页

作者： YANG Xiaonan ZHOU Zixiang LI Jing FU Xin MU Xingmin LI Ting Institute of soil and Water Conservation Northwest A&F University Yangling 712100 Shaanxi China Institute of Water Saving Agriculture in Arid Area of China Northwest A&F University Yangling 712100 Shaanxi China College of Tourism and Environment Shaanxi Normal University Xi'an 710119 China College of Urban and Environment Science Northwest University Xi'an 710127 China

Natural ecosystems provide human society with very important products and services. With the rapid increase in population and the over-exploitation of natural resources, humans are continually enhancing the production of some services at the expense of others. This paper estimates changes in ecosystem services, and the relationship between these services in the Guanzhong-Tianshui Economic Region of China. These ecosystem changes are of great significance to the sustainable development of this economic region. The concept of production possibility frontier （PPF） is applied to evaluate the trade-offs and synergy between carbon sequestration, water yield and soil retention. Three land use strategy scenarios - planning, exploitation and protection - are applied to evaluate potential changes in ecosystem services. This study reveals noticeable trade-offs between carbon sequestration, soil retention and water yield, with synergy between carbon sequestration and soil retention. There are synergies between carbon sequestration, water yield and soil retention in the three scenarios. The protection scenario is the most favourable land use strategy for regulating ecosystem service capacity. This scenario results in the highest carbon sequestration, water yield and soil retention. The results could have implications for natural capital and ecosystem services planning, management and land use decision-making.

关键词： carbon sequestration water yield soil retention scenarios trade-offs

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Multi-scenario simulation of land use change and its impact on ecosystem services in the northeastern edge of the Qinghai-Xizang Plateau,China

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Journal of Arid Land 2025年第2期17卷 145-166页

作者： ZHANG Xuebin LIU Yanni YIN Junfeng SHI Peiji FENG Haoyuan SHI Jing College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China Faculty of Geographic Sciences Beijing Normal UniversityBeijing 100875China State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of EcologyLanzhou UniversityLanzhou 730000China

The Qinghai-Xizang Plateau(QXP)serves as a crucial ecological barrier in China and Asia,exerting profound influences on global climate and biodiversity *** Tibetan Autonomous Prefecture(hereinafter referred as Gannan Prefecture),located on the northeastern edge of the QXP,represents a fragile alpine ecosystem in which land use change significantly impacts ecosystem services(ESs).This study established a comprehensive framework,utilizing the Patch-generating Land-Use Simulation(PLUS)model coupled with the Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model to predict land use patterns under the natural development scenario,cultivated land protection scenario,and ecological protection scenario for Gannan Prefecture by 2030 and evaluated four critical ESs:habitat quality(HQ),water yield(WY),soil retention(SR),and carbon storage(CS).The primary aim is to elucidate the impacts of dynamic land use change on *** results revealed that,from 2000 to 2020,HQ exhibited minimal variation,whereas CS experienced a slight ***,WY and SR showed significant *** the natural development scenario,construction land was projected to increase by 4247.74 hm^(2),primarily at the expense of forest *** cultivated land protection scenario anticipated an increase in farmland by 2634.36 hm^(2),which was crucial for maintaining food *** ecological protection scenario predicted a notable expansion of forest land,accompanied by a restrained development rate of construction *** ecological protection scenario also showed an increase in the ecosystem service index(ESI),encompassing 26.07%of the *** land and grassland emerged as the primary contributors to ESs,while construction land substantially impacted *** bodies exhibited minimal contribution to *** study enhanced the understanding of land use change impacts on ESs in fragile and high-altitude ecosystems,offering essential theoretical framework

关键词： PLUS-InVEST model ecosystem service habitat quality water yield soil retention carbon storage Qinghai-Xizang Plateau

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Spatiotemporal characteristics and influencing factors of ecosystem services in Central Asia

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Journal of Arid Land 2023年第1期15卷 1-19页

作者： YAN Xue LI Lanhai State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Ili Station for Watershed Ecosystem Research Chinese Academy of SciencesXinyuan 835800China CAS Research Centre for Ecology and Environment of Central Asia Urumqi 830011China Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone Urumqi 830011China University of Chinese Academy of Sciences Beijing 100049China

Land use/land cover(LULC)change and climate change are two major factors affecting the provision of ecosystem services which are closely related to human ***,a clear understanding of the relationships between these two factors and ecosystem services in Central Asia is still *** study aimed to comprehensively assess ecosystem services in Central Asia and analyze how they are impacted by changes in LULC and *** spatiotemporal patterns of three ecosystem services during the period of 2000-2015,namely the net primary productivity(NPP),water yield,and soil retention,were quantified and mapped by the Carnegie-Ames-Stanford Approach(CASA)model,Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model,and Revised Universal soil Loss Equation(RUSLE).Scenarios were used to determine the relative importance and combined effect of LULC change and climate change on ecosystem ***,the relationships between climate factors(precipitation and temperature)and ecosystem services,as well as between LULC change and ecosystem services,were further *** results showed that the high values of ecosystem services appeared in the southeast of Central *** the six biomes(alpine forest region(AFR),alpine meadow region(AMR),typical steppe region(TSR),desert steppe region(DSR),desert region(DR),and lake region(LR)),the values of ecosystem services followed the order of AFR>AMR>TSR>DSR>DR>*** addition,the values of ecosystem services fluctuated during the period of 2000-2015,with the most significant decreases observed in the southeast mountainous area and northwest of Central *** change had a greater impact on the NPP,while climate change had a stronger influence on the water yield and soil *** combined LULC change and climate change exhibited a significant synergistic effect on ecosystem services in most of Central ***,ecosystem services were more strongly and positively correlated with precipitation

关键词： ecosystem services land use/land cover change climate change net primary productivity water yield soil retention Central Asia

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Sand-fixing Function under the Change of Vegetation Coverage in a Wind Erosion Area in Northern China

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Journal of Resources and Ecology 2014年第2期5卷 105-114页

作者：巩国丽刘纪远邵全琴翟俊中国科学院地理科学与资源研究所北京100101 中国科学院大学北京100049 环境保护部卫星环境应用中心北京100094

Using meteorological and remote sensing data and changes in vegetation cover during the wind erosion season in northern China, a revised wind erosion equation was applied to evaluate spatiotemporal variation in soil erosion and conservation since the 1990s, and to reveal the effects of the change of vegetation coverage on the wind erosion control service. The results showed that average soil erosion in northern China between 1990 and 2010 was 16.01 bil ion tons and was decreasing. The most seriously eroded areas were mainly distributed in large desert areas or low cover grasslands. Most wind erosion occurred in spring, accounting for 45.93% of total wind erosion. The average amount of sand ifxation service function for northern China between 1990 and 2010 was 20.31 billion tons. Given the influence of wind erosion forces, the service function for sand fixation cannot effectively highlight the role of sand ifxation from the ecosystem itself. The retention rate of service function for sand ifxation reveals the role of the ecosystem itself. The distribution characteristics of the soil retention rate are similar to vegetation cover, which shows a gradual decrease from southeast to northwest in the study area. Improved spring vegetation cover was observed mainly on the Loess Plateau, Qinghai-Tibet Plateau, in northern Hebei, eastern Inner Mongolia and northeast China after the implementation of ecosystem projects. The soil retention rate in most areas showed a signiifcant positive relationship with grassland vegetation in spring （r＆gt;0.7, p＆lt;0.01）. The increments of ecosystem service function for various ecological systems are different. Increments for the grassland ecosystem, forest ecosystem, farmland ecosystem and desert ecosystem are 2.02%, 1.15%, 0.99% and 0.86%, respectively.

关键词： vegetation cover change RWEQ model wind erosion soil retention northern China

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