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Journal of Mountain Science 2012年第1期9卷 77-86页

作者： TANG Qiang bao yuhai HE Xiubin ZHU Bo ZHANG Xinbao Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China Graduate University of Chinese Academy of Sciences Beijing 100049China

The worldwide extension and intensification of farming during the last century has led to ecosystem degradation and caused a series of environmental *** of ecosystem services in agricultural regions has been implemented by top-down government actions or initiated by resilience scientists in the developed countries,but little attention was paid in the developing countries,especially in some remote mountainous *** present paper presents a case study showing how local farmers obtained both maximal societal outcomes and agroecosystem conservation interests in the absence of distinct boundaries between agricultural and protected ecological areas in the densely populated purple-soiled hilly region of southwestern *** local community(Yanting County) has developed a mosaic agricultural-forestry-fishery-stock breeding system with spatially targeted land uses,diverse agricultural productions and multiple ecological *** indicates that the local farmers have hereditarily perceived sound strategies on maximizing sustainable societal outcomes and optimizing tradeoffs among macro-market,state policy,new technological facility and ecological reinforcement.

关键词： Mosaic agroforestry system Adaptive strategies Land competition Agroecosystem conservation Purple-soiled hilly region China

Spatial and temporal variations of vegetation cover and the relationships with climate factors in Inner Mongolia based on GIMMS NDVI3g data

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Journal of Arid Land 2017年第3期9卷 394-407页

作者： TONG Siqin ZHANG Jiquan bao yuhai Wurina Terigele Weilisi Lianxiao School of Environment/Natural Disaster Research Institute Northeast Normal University College of Geographic Science Inner Mongolia Normal University Graduate School of Engineering Gifu University Graduate School of Life and Environmental Sciences Tsukuba University

Variation in vegetation cover in Inner Mongolia has been previously studied by the remote sensing data spanning only one decade. However, spatial and temporal variations in vegetation cover based on the newly released GIMMS NDVI3g data spanning nearly thirty years have yet to be analyzed. In this study, we applied the methods of the maximum value composite （MVC） and Pearson＇s correlation coefficient to analyze the variations of vegetation cover in Inner Mongolia based on GIMMS NDVI3g data spanning from 1982 to 2013. Our results indicate that the normalized difference vegetation index （NDVI） increased at a rate of 0.0003/a during the growing seasons despite of the drier and hotter climate in Inner Mongolia during the past three decades. We also found that vegetation cover in the southern agro-pastoral zone significantly increased, while it significantly decreased in the central Alxa. The variations in vegetation cover were not significant in the eastern and central regions. NDVI is positively correlated with precipitation （r=0.617, P=0.000） and also with air temperature （r=0.425, P=0.015）, but the precipitation had a greater effect than the air temperature on the vegetation variations in Inner Mongolia.

关键词： GIMMS NDVI3g vegetation cover spatiotemporal variation climate change

三峡水库消落带狗牙根根系对紫色土抗剪性能的影响

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中国水土保持科学 2024年第4期22卷 41-50页

作者：郑晓岚鲍玉海贺秀斌谢航宇禹妍彤王英培中国科学院、水利部成都山地灾害与环境研究所山地表生过程与生态调控重点实验室成都610041 中国科学院大学北京100049 重庆市大足区农业农村委员会重庆402360

植物根系对提高土壤抗侵蚀能力起着最主要的作用。为探究根系对三峡水库消落带土壤抗剪性能的影响,以典型草本植物狗牙根及其根土复合体为研究对象,利用原状土和重塑土、采用直剪试验和三轴试验2种方法,揭示根系形态特征、含根量以及布... 详细信息

植物根系对提高土壤抗侵蚀能力起着最主要的作用。为探究根系对三峡水库消落带土壤抗剪性能的影响,以典型草本植物狗牙根及其根土复合体为研究对象,利用原状土和重塑土、采用直剪试验和三轴试验2种方法,揭示根系形态特征、含根量以及布根方式对土壤抗剪性能的影响。结果表明:1)内摩擦角、黏聚力与根系形态特征呈对数正相关;各形态指标对土壤抗剪性能的影响程度依次为:根表面积密度>根体积密度>根长密度>根质量密度>根径。2)根系含量与土壤抗剪性能呈正相关。含根量分别为0.9、0.6和0.3 mg/cm^(3)的根土复合体抗剪强度依次比素土提高14.54%~49.56%、9.09%~35.82%和3.80%~17.58%;内摩擦角依次提高13.95%、13.07%和1.98%;黏聚力依次提高29.37%、24.48%和15.34%。3)交叉布根下土壤抗剪性能最强,与垂直布根、水平布根相比,交叉布根的抗剪强度依次提高4.22%~16.95%和11.45%~32.61%;黏聚力依次提高15.61%和16.09%;最大应力值依次提高3.78%~34.18%和36.86%~41.44%。研究结果可为三峡水库消落带固土护岸的物种筛选、水土保持生态建设以及水库岸线管理等提供参考。

关键词：植物根系根土复合体土壤抗剪性能消落带三峡水库

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Assessing remotely sensed and reanalysis products in characterizing surface soil moisture in the Mongolian Plateau

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International Journal of Digital Earth 2021年第10期14卷 1255-1272页

作者： Min Luo Chula Sa Fanhao Meng Yongchao Duan Tie Liu yuhai bao College of Geographical Science Inner Mongolia Normal UniversityHohhotPeople’s Republic of China Inner Mongolia Key Laboratory of Remote Sensing and Geographic Information Systems Inner Mongolia Normal UniversityHohhotPeople’s Republic of China Binjiang College Nanjing University of Information Science&TechnologyWuxiPeople’s Republic of China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqiPeople’s Republic of China

Soil moisture(SM)plays a crucial role in the dynamics of coupled atmosphere,water,energy,and carbon *** this study,the spatiotemporal distribution and variations of SM in the Mongolian Plateau were investigated for the period of 1982-2018 based on four gridded SM *** the observed SM from 33 monitoring stations as a reference,the reliability of these four gridded products was validated,and the three-cornered hat(TCH)method was also applied to evaluate their *** results indicated that all these four products underestimated the SM in this region at different *** ERA-Interim SM performed much better than other three products,with a higher R of 0.53 and lower ubRMSE of 0.0378 m^(3)·m^(−3).Except for ECV,the surface SM exhibited a decreasing trend at−0.0004 to−0.0008 m^(3)·m^(−3)/decade in the warm season(from April to October)over the past 37 *** greatest decreases in SM occurred in the summer *** change plays a more important role in explaining the variations of SM than temperature reported by partial correlation *** results of this study will benefit our understanding of the climate change effects and the protection of the ecological systems in this region.

关键词： Soil moisture Mongolian Plateau uncertainty gridded products

ICESat/GLAS-derived changes in the water level of Hulun Lake, Inner Mongolia, from 2003 to 2009

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Frontiers of Earth Science 2018年第2期12卷 420-430页

作者： Chunlan LI Jun WANG Richa HU Shan YIN yuhai bao Yuwei LI Key Laboratory of Geographic Information Science (Ministry of Education) East China Normal University Shanghai 200241 China School of Geographic Sciences East China Normal University Shanghai 200241 China College of Geographical Sciences Inner Mongolia Normal University Huhhot 010022 China Key Laboratory of Remote Sensing and Geographic Information System Inner Mongolia Normal University Huhhot 010022 China

Hulun Lake is the largest freshwater lake in northern Inner Mongolia and even minor changes in its level may have major effects on the ecology of the lake and the surrounding area. In this study, we used high-precision elevation data for the interval from 2003–2009 measured by the Geoscience Laser Altimetry System (GLAS) on board the Ice, Cloud, and land Elevation Satellite (ICESat) to assess annual and seasonal water level variations of Hulun Lake. The altimetry data of 32 satellite tracks were processed using the RANdom SAmple Consensus algorithm (RANSAC) to eliminate elevation outliers, and subsequently the Normalized Difference Water Index (NDWI) was used to delineate the area of the lake. From 2003–2009, the shoreline of Hulun Lake retreated westwards, which was especially notable in the southern part of the lake. There was only a small decrease in water level, from 530.72 m to 529.22 m during 2003–2009, an average rate of 0.08 m/yr. The area of the lake decreased at a rate of 49.52 km2/yr, which was mainly the result of the shallow bathymetry in the southern part of the basin. The decrease in area was initially rapid, then much slower, and finally rapid again. Generally, the lake extent and water level decreased due to higher temperatures, intense evaporation, low precipitation, and decreasing runoff. And their fluctuations were caused by a decrease in intraannual temperature, evaporation, and a slight increase in precipitation. Overall, a combination of factors related to climate change were responsible for the variations of the water level of Hulun Lake during the study interval. The results improve our understanding of the impact of climate change on Hulun Lake and may facilitate the formulation of response strategies.

关键词： ICESat/GLAS altimetry water level Hulun Lake arid area climate change

基于无人机高光谱遥感的典型草原退化指示种识别

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遥感技术与应用 2024年第1期39卷 248-258页

作者：乌尼乐包玉龙布仁图雅图布新巴雅尔陶赛喜雅拉图包玉海金额尔德木吐内蒙古师范大学地理科学学院内蒙古呼和浩特010022 内蒙古自治区遥感与地理信息系统重点实验室内蒙古呼和浩特010022 内蒙古自治区环境监测总站内蒙古呼和浩特010011

利用无人机高光谱遥感数据技术快速、准确地提取典型草原植被类型,对动态监测草原生态安全具有重要的意义。为此,在退化较严重的白音锡勒牧场典型草原区,采集了空间分辨率为1.8 cm、光谱分辨率为4 nm,共有125个波段(450~950 nm)的高光... 详细信息

利用无人机高光谱遥感数据技术快速、准确地提取典型草原植被类型,对动态监测草原生态安全具有重要的意义。为此,在退化较严重的白音锡勒牧场典型草原区,采集了空间分辨率为1.8 cm、光谱分辨率为4 nm,共有125个波段(450~950 nm)的高光谱影像。选主要退化指示种—冷蒿为识别目标,经微分变换和包络线去除等光谱变换处理,进行光谱特征差异分析发现冷蒿与其他绿色植被和背景土壤在500、550、670 nm处有明显的光谱差异,因此选择以上3个波段作为特征波段,构建了支持向量机(SVM)和随机森林(RF)的退化指示物种识别模型,并进行了精度验证。结果显示:SVM和RF的识别精度分别为96.92%和97.34%,Kappa系数分别为0.95和0.96。从结果可知,随机森林模型的识别精度更高,退化指示种的像元空间分布更接近自然状况,可以为监测典型草原退化指示种提供技术支持。

关键词：无人机高光谱遥感典型草原退化指示种

Spatiotemporal variation in snow cover and its effects on grassland phenology on the Mongolian Plateau

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Journal of Arid Land 2021年第4期13卷 332-349页

作者： SA Chula MENG Fanhao LUO Min LI Chenhao WANG Mulan ADIYA Saruulzaya bao yuhai College of Geographical Science Inner Mongolia Normal UniversityHohhot 010022China Inner Mongolia Key Laboratory of Remote Sensing and Geographic Information System Inner Mongolia Normal UniversityHohhot 010022China Institute of Geography and Geoecology Mongolian Academy of ScienceUlaanbaatar 15170Mongolia

Snow cover is an important water source for vegetation growth in arid and semi-arid areas,and grassland phenology provides valuable information on the response of terrestrial ecosystems to climate *** Mongolian Plateau features both abundant snow cover resources and typical grassland *** recent years,with the intensification of global climate change,the snow cover on the Mongolian Plateau has changed correspondingly,with resulting effects on vegetation *** this study,using MOD10A1 snow cover data and MOD13A1 Normalized Difference Vegetation Index(NDVI)data combined with remote sensing(RS)and geographic information system(GIS)techniques,we analyzed the spatiotemporal changes in snow cover and grassland phenology on the Mongolian Plateau from 2001 to *** correlation analysis and grey relation analysis were used to determine the influence of snow cover parameters(snow cover fraction(SCF),snow cover duration(SCD),snow cover onset date(SCOD),and snow cover end date(SCED))on different types of grassland *** results showed wide snow cover areas,an early start time,a late end time,and a long duration of snow cover over the northern Mongolian ***,a late start,an early end,and a short duration were observed for grassland phenology,but the southern area showed the opposite *** SCF decreased at an annual rate of 0.33%.The SCD was shortened at an annual rate of 0.57 *** SCOD and SCED in more than half of the study area advanced at annual rates of 5.33 and 5.74 DOY(day of year),*** grassland phenology,the start of the growing season(SOS)advanced at an annual rate of 0.03 DOY,the end of the growing season(EOS)was delayed at an annual rate of 0.14 DOY,and the length of the growing season(LOS)was prolonged at an annual rate of 0.17 *** SCF,SCD,and SCED in the snow season were significantly positively correlated with the SOS and negatively correlated with the EOS and *** SCOD was significantly negative

关键词： snow cover fraction snow cover phenology vegetation phenology grey relation grade climate change Mongolian Plateau

Developing a sustainable strategy to conserve reservoir marginal landscapes

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National Science Review 2018年第1期5卷 10-14页

作者： Qiang Tang Bojie Fu Adrian L.Collins Anbang Wen Xiubin He yuhai bao Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and Environment Chinese Academy of Sciences State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of Sciences

China has accelerated its pace in building dams to meet growing demands in energy consumption,as well as to alleviate air pollution resulting from fossil fuel emissions and to mitigate global climate change *** rivers in southwestern China(*** Jinsha,Yalong,Dadu,Wu,Nu,Lancang and upper Yangtze rivers)have primarily been targeted as major basins for hydropower development,where cascade dams have been constructed or are *** them,the Three Gorges Dam is the world’s largest hydropower project

关键词： Developing a sustainable strategy to conserve reservoir marginal landscapes

Multifractal features of the particle-size distribution of suspended sediment in the Three Gorges Reservoir, China

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International Journal of Sediment Research 2021年第4期36卷 489-500页

作者： Jinlin Li Xiubin He Jie Wei yuhai bao Qiang Tang Jean de Dieu Nambajimana Gratien Nsabimana Dil Khurram Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chongqing Key Laboratory of Earth Surface Processes and Environmental Remote Sensing in the Three Gorges Reservoir Area University of Chinese Academy of Sciences School of Geographical Sciences Southwest University

The Three Gorges Reservoir(TGR) in China is the largest hydroelectric project in the world,but the threat of sediment affecting ecological sustainability of the reservoir is a topic of *** particlesize distribution(PSD) is informative in understanding sediment transport dynamics and biochemical *** is,therefore,important to quantitatively characterize the distribution of sediment *** the current study,fractal theory is applied to determine the PSD of suspended sediment in the *** results show that the volumetric fractal dimension(Dv) exhibits a significant seasonal difference(p <0.05),reflecting sediment source and hydrodynamic sorting control the granularity of suspended sediment in the *** specifically,suspended sediment particles are coarser in the wet season than in the dry season for the Yangtze River,and the opposite is true for the Ruxi River,an important *** generalized dimension spectrum,D(q)-q,and multifractal singularity spectrum,f[α(q)]-α(q),were calculated for each suspended sediment ***,the parameters,D(0),D(1),D(2),α(0),Δα(q),and Δf [α(q)],were determined to characterize the *** a result,the coarser suspended sediment during the wet season is characterised by a more complex PSD pattern,with a wider range of particle sizes,greater heterogeneity,and greater homogeneity of distribution over the measurement ***,the multifractal structure of the PSD of suspended sediment is more complex during the dry season than during the wet season,with higher local dispersion and *** findings of the current study highlight that multifractal analysis provides important insight for understanding the PSD of suspended sediment in the TGR.

关键词： Particle-size distribution Suspended sediment Multifractal features Flow regulation Three Gorges Reservoir

面向滨海湿地修复治理的生态系统服务净价值遥感评估研究——以黄河口湿地为例

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海洋开发与管理 2024年第3期41卷 28-44页

作者：任令祺任广波王建步胡亚斌马毅包玉海内蒙古师范大学地理科学学院呼和浩特010010 自然资源部第一海洋研究所青岛266061

文章以黄河口湿地为研究区,在生态系统服务价值概念的基础上,提出了一种考虑成本投入的生态系统服务净价值估算方法,通过时间序列遥感监测,估算并分析了2019—2022年的黄河口湿地生态系统服务净价值。结果表明:(1)在黄河口湿地的11种生... 详细信息

文章以黄河口湿地为研究区,在生态系统服务价值概念的基础上,提出了一种考虑成本投入的生态系统服务净价值估算方法,通过时间序列遥感监测,估算并分析了2019—2022年的黄河口湿地生态系统服务净价值。结果表明:(1)在黄河口湿地的11种生态系统服务类型中,生物多样性、固碳、食物供给和消浪护岸是主导生态系统服务,浅海水域、芦苇、盐地碱蓬和潮滩净价值能力较强。2022年生态系统服务净价值比2021年减少了4.08亿元,主要是2022年净价值能力较强的盐地碱蓬大面积消失导致。(2)尽管在2019年和2020年,典型生态修复项目在施工后的第一年净效益呈现负值,但应发挥的生态系统服务净价值已达到预期。(3)通过敏感性分析证明了消浪护岸、食物供给、固碳和生物多样性在众多生态系统服务中具有重要作用。生态系统服务净价值估算可以比较分析不同的湿地类型产生的最大净价值,为合理的规划和管理滨海湿地生态系统提供科学依据。

关键词：生态系统服务净价值成本分析环境保护生态修复