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Journal of Geographical Sciences 2024年第2期34卷 355-374页

作者：文可戈李程何剑锋庄大方 State Key Laboratory of Resources and Environment Information System Institute of Geographic Sciencesand Natural Resources ResearchCASBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Nanjing Agricultural University Nanjing 210095China

Significant changes to the world’s climate over the past few decades have had an impact on the development of *** in high latitude regions,where the ecosystems are fragile,is susceptible to climate *** is possible to better understand vegetation’s phenological response to climate change by examining these *** studies have mainly investigated how a single meteorological factor affects changes in vegetation phenology through linear correlation analysis,which is insufficient for quantitatively revealing the effects of various climate factor interactions on changes in vegetation *** used the asymmetric Gaussian method to fit the normalized difference vegetation index(NDVI)curve and then used the dynamic threshold method to extract the phenological parameters,including the start of the season(SOS),end of the season(EOS),and length of the season(LOS),of the vegetation in this study area in the Tundra-Tagar transitional zone in eastern and western Siberia from 2000 to *** monthly temperature and precipitation data used in this study were obtained from the climate research unit(CRU)meteorological *** degrees to which the changes in temperature and precipitation in the various months and their interactions affected the changes in the three phenological parameters were determined using the GeoDetector,and the results were *** findings demonstrate that the EOS was more susceptible to climate change than the *** vegetation phenology shift was best explained by the climate in March,April,and September,and the combined effect of the temperature and precipitation had a greater impact on the change in the vegetation phenology compared with the effects of the individual climate *** results quantitatively show the degree of interaction between the variations in temperature and precipitation and their effects on the changes in the different phenological parameters in the various *** how

关键词： phenology climate change Siberia asymmetric Gaussian function GeoDetector

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Impacts of LUCC processes on potential land productivity in China in the 1990s

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Science China Earth Sciences 2005年第8期48卷 1259-1269页

作者： LIU Jiyuan XU Xinliang zhuang dafang GAO Zhiqiang Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

Using meteorological data and RS dynamic land-use observation data set, the po-tential land productivity that is limited by solar radiation and temperature is estimated and the impacts of recent LUCC processes on it are analyzed in this paper. The results show that the influence of LUCC processes on potential land productivity change has extensive and unbal-anced characteristics. It generally reduces the productivity in South China and increases it in North China, and the overall effect is increasing the total productivity by 26.22 million tons. The farmland reclamation and original farmlands losses are the primary causes that led potential land productivity to change. The reclamation mostly distributed in arable-pasture and arable-forest transitional zones and oasises in northwestern China has made total productivity increase by 83.35 million tons, accounting for 3.50% of the overall output. The losses of original farmlands driven by built-up areas invading and occupying arable land are mostly distributed in the regions which have rapid economic development, e.g. Huang-Huai-Hai plain, Yangtze River delta, Zhu-jiang delta, central part of Gansu, southeast coastal region, southeast of Sichuan Basin and Urumqi-Shihezi. It has led the total productivity to decrease 57.13 million tons, which is 2.40% of the overall output.

关键词： land-use change, potential land productivity, photosynthetic productivity, photosynthetic thermal pro-ductivity, total photosynthetic thermal productivity.

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Urban surface heat fluxes infrared remote sensing inversion and their relationship with land use types

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Journal of Geographical Sciences 2012年第4期22卷 699-715页

作者： LIU Yue SHINTARO Goto zhuang dafang KUANG Wenhui Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China Graduate University of Chinese Academy of Sciences Beijing 100049China Rissho University Saitama 3600194Japan

Using ASTER （Advanced Spaceborne Thermal Emission and Reflection Radiometer） infrared remote sensing data we inversed the parameters of urban surface heat fluxes applying the PCACA model and theoretical position algorithm, and then we analyzed the influence of different land use types on the surface heat fluxes and energy balance. In this study Kumagaya, a city in Saitama Prefecture, Japan, was selected as the experimental area. The result shows that the PCACA model is feasible for the surface heat fluxes estimation in urban areas because this model requires less parameters in the procedure of heat fluxes estimation in urban areas with complicated surface structure and can decrease the uncertainty. And we found that different land-use types have indicated the height heterogeneity on the surface heat fluxes significantly. The magnitudes of Bowen ratio in descending order are industrial, residential, transportation, institutional, dry farmland, green space, and water body. Under the same meteorological condition, there are distinct characteristics and regional differences in Bowen ratios among different surface covers, indicating higher sensible heat flux and lower latent heat flux in the urban construction land, while lower sensible heat flux and higher latent heat flux in the vegetation-covered area, the outskirt of the urban area. The increase of urban impervious surface area caused by the urban sprawl can enlarge the sensible heat flux and the Bowen ratio, so that it causes the increasing of urban surface temperature and air tem- perature, which is the mechanism of the so-called heat island effect.

关键词： heat fluxes sensible heat latent heat land cover types remote sensing

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Land-use induced changes in topsoil organic carbon stock of paddy fields using MODIS and TM/ETM analysis:A case study of Wujiang County,China

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Journal of Environmental Sciences 2008年第7期20卷 852-858页

作者： GAO, Jianfeng PAN, Genxing JIANG, Xiaosan PAN, Jianjun zhuang, dafang Institute of Resources Ecosystem and Environment of Agriculture Nanjing Agricultural University Nanjing 210095 China Institute of Geographical Science and Natural Resources Chinese Academy of Sciences Beijing 100101 China

Topsoil soil organic carbon (SOC) that plays an important role in mitigating atmospheric carbon dioxide (CO_2) buildup is greatly affected by human *** evaluate the influence of land-use changes on SOC stocks in paddy soils,a new algorithm was developed by integrating MODIS (moderate resolution imaging spectral-radiometer) and TM/ETM data for timely monitoring the land-use change in Wujiang ***,the land-use class-maps derived from MODIS and TM/ETM analyses were further used to estima...

关键词： soil organic carbon (SOC) MODIS TM/ETM rice paddies land-use soil C sequestration

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Esophageal cancer spatial and correlation analyses： Water pollution, mortality rates, and safe buffer distances in China

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Journal of Geographical Sciences 2014年第1期24卷 46-58页

作者： ZHANG Xueyan zhuang dafang MA Xin JIANG Dong Data Center for Resources and Environmental Sciences Institute of Geographic Sciences and Natura Resources Research CAS Beijing 100101 China Institute of Environment and Sustainable Development in Agriculture CAAS Beijing 100081 China

Esophageal cancer exhibits one of the highest incidence and mortality rates in China. Malignant tumors caused by esophageal cancer, and the relationship to environmental factors has been the focus of many public health studies. This study applied spatial analysis to ascertain the relationship between water pollution and esophageal cancer mortality rates nationwide. We employed two datasets, including a national investigation of esophageal cancer rates and distribution, and national water quality grades in China＇s primary rivers and lakes. Esophageal cancer data were grouped based on different water quality grades, which included a scaled buffer distance from rivers and lakes. Non-parametric correlation analyses were performed to examine the presence or absence of the following correlations：（i） eso- phageal cancer mortality and buffer distance from rivers and lakes; and （ii） esophageal can- cer mortality and water quality grade values. The present study revealed a significant positive correlation between widespread water pollution and esophageal cancer mortality nationwide; and a significant negative correlation between esophageal cancer mortality, and buffer dis- tance from rivers and lakes.

关键词： esophageal cancer water pollution environment GIS spatial analysis

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Assessment of the relative role of climate change and human activities in desertification：

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Journal of Geographical Sciences 2011年第5期21卷 926-936页

作者： XU Duanyang LI Chunlei zhuang dafang PAN Jianjun Institute of Scientific and Technical Information of China Beijing 100038 China Xinjiang Normal University Urumqi 830054 China Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China Nanjing Agricultural University Nanjing 210095 China

Climate change and human activities are the two kinds of driving forces in desertification,and assessing their relative role in desertification is of great significance to deeply understanding the driving mechanisms and preventing desertification *** paper has systematically reviewed the progress of the researches on assessing the relative role of climate change and human activities in desertification from qualitative,semi-quantitative and quantitative aspects *** authors found that there were still some problems in the previous *** example,the subjectivity in assessment was obvious,the assessment cannot be easily repeated,and the assessment and its results were always based on administrative regions and less taken and expressed in a continuous *** to the progress of previous researches and the works conducted by the authors recently,we put forward a quantitative approach by selecting NPP as a common indicator to measure the relative role of climate change and human activities in desertification and dividing the ecological process of ＂driving force effect-dynamic response of desertified land＂ into several ***,validation and scale of assessment should be taken into account when quantitative assessment of the relative role of climate change and human activities in desertification are carried out.

关键词： desertification climate change human activities relative role assessment

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Assessing the relative role of climate change and human activities in sandy desertification of Ordos region, China

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Science China Earth Sciences 2009年第6期52卷 855-868页

作者： XU DuanYang KANG XiangWu LIU ZhiLi zhuang dafang PAN JianJun College of Resource and Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China Institute of Scientific and Technical Information of China Beijing 100038China The National Meteorological Center Beijing 100081China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China

Climate change and human activities are driving forces of sandy desertification and the relative role of them in sandy desertification is the hot point in related researches. A study was carried to assess the relative role of climate change and human activities in sandy desertification of Ordos region in China. Potential NPP and the difference between potential and actual NPP were selected as indicators to assess the relative role of climate change and human activities in sandy desertification, respectively. Assessing methods were built based on some scenarios for the reversion and expansion of sandy desertification and the relative role of climate change and human activities in sandy desertification of Ordos region were assessed from 1981 to 2000. The results showed that although some local places experienced an expansion of sandy desertification, the change of sandy desertification of Ordos region from 1981 to 2000 showed a stably reversing trend. The relative role of climate change and human activities in sandy desertification of Ordos region varied at different temporal and spatial scales in the reversion and expansion processes. In the reversion of sandy desertification, climate change was the dominant factor in the period of 1981 to 1990 and the reversed areas mainly induced by climate change including Mu Us sandy land and the transition zone between temperate steppe and temperate deciduous scrubs in north east of Ordos region; however, human activities controlled the reversed process during the period from 1991 to 2000 and the areas mainly induced by human activities distributed in all banners of Ordos region. In the expansion of sandy desertification, human activities were the dominant factor in the period of 1981 to 1990 and the expanded areas mainly included the regions around common boundary of Hanggin, Dalad Banners and Dongsheng City; however, climate change dominated the expansion of sandy desertification from 1991 to 2000, the expanded areas equably d

关键词： Ordos causes of sandy desertification climate change human activities relative role NPP

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Lithological Discrimination of the Mafic-Ultramafic Complex, Huitongshan, Beishan, China: Using ASTER Data

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Journal of Earth Science 2014年第3期25卷 529-536页

作者： Lei Liu Jun Zhou Dong Jiang dafang zhuang Lamin R Mansaray Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education School of Earth Sciences and Resources Chang'an University Lanzhou AuriferouStone Mining Services Co. Ltd. Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences

The Beishan area has more than seventy mafic-ultramafic complexes sparsely distributed in the area and is of a big potential in mineral resources related to mafic-ultramafic intrusions. Many mafic-ultramafic intrusions which are mostly in small sizes have been omitted by previous works. This research takes Huitongshan as the study area, which is a major district for mafic-ultramafic occurrences in Beishan. Advanced spaceborne thermal emission and reflection radiometer（ASTER） data have been processed and interpreted for mapping the mafic-ultramafic complex. ASTER data were processed by different techniques that were selected based on image reflectance and laboratory emissivity spectra. The visible near-infrared（VNIR） and short wave infrared（SWIR） data were transformed using band ratios and minimum noise fraction（MNF）, while the thermal infrared（TIR） data were processed using mafic index（MI） and principal components analysis（PCA）. ASTER band ratios（6/8, 5/4, 2/1） in RGB image and MNF（1, 2, 4） in RGB image were powerful in distinguishing the subtle differences between the various rock units. PCA applied to all five bands of ASTER TIR imagery highlighted marked differences among the mafic rock units and was more effective than the MI in differentiating mafic-ultramafic rocks. Our results were consistent with information derived from local geological maps. Based on the remote sensing results and field inspection, eleven gabbroic intrusions and a pyroxenite occurrence were recognized for the first time. A new geologic map of the Huitongshan area was created by integrating the results of remote sensing, previous geological maps and field inspection. It is concluded that the workflow of ASTER image processing, interpretation and ground inspection has great potential for mafic-ultramafic rocks identifying and relevant mineral targeting in the sparsely vegetated arid region of northwestern China.

关键词： mafic-ultramafic complex ASTER data band ratio minimum noise fraction mafic index principal component analysis.

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Using ^(137)Cs tracing technique to estimate wind erosion rates in the typical steppe region, northern Mongolian Plateau

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Chinese Science Bulletin 2008年第9期53卷 1423-1430页

作者： QI YongQing LIU JiYuan SHI HuaDing HU YunFeng zhuang dafang Institute of Geographic Sciences and Resources Research Chinese Academy of Sciences Beijing 100101 China Chinese Research Academy of Environmental Sciences Beijing 100012 China

Wind erosion is one of the major factors of land degradation in the typical steppe region, northern Mongolian Plateau. Using 137Cs tracing technique, we estimated the wind erosion rates of different pastures and abandoned farmland at Bayannur and Karakorum in Mongolia. The pastures and cutting grassland at Bayannur were slightly eroded by wind, with the rates of 64.58-169.07 t·km?2·a?1. The abandoned farmland in Karakorum, however, was strongly eroded by wind, with annual surface soil loss of 4.05 mm·a?1, and wind erosion rates up to 6723.06 t·km?2·a?1. The total loss of surface soil due to wind erosion has been 17.4 cm since the cultivation of the steppe land in the 1960s. The wind ero- sion rate at the abandoned farmland was much higher than that at the typical steppe sites, showing that the cultivation led to serious wind erosion in the typical steppe region, northern Mongolian Plateau. By contrast, traditional livestock grazing resulted in less disturbance to the surface soil, and did not in- duce to devastating wind erosion, which plays an important role in maintaining the stability of the steppe ecosystem in the northern Mongolian Plateau.

关键词：蒙古高原北部草原风蚀铯元素跟踪技术

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Estimation of wind erosion rates by using ^(137)Cs tracing technique:A case study in Tariat-Xilin Gol transect, Mongolian Plateau

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Chinese Science Bulletin 2008年第5期53卷 751-758页

作者： LIU JiYuan SHI HuaDing QI YongQing zhuang dafang HU YunFeng Institute of Geographic Sciences and Resources Research Chinese Academy of Sciences Beijing 100101 China Chinese Research Academy of Environmental Sciences Beijing 100012 China

Wind erosion is one of the major environmental problems in semi-arid and arid regions. Here we es- tablished the Tariat-Xilin Gol transect from northwest to southeast across the Mongolian Plateau, and selected seven sampling sites along the transect. We then estimated the soil wind erosion rates by using the ^(137)Cs tracing technique and examined their spatial dynamics. Our results showed that the ^(137)Cs inventories of sampling sites ranged from 265.63±44.91 to 1279.54±166.53 Bq·m^(-2), and the wind erosion rates varied from 64.58 to 419.63 t·km^(-2)·a^(-1) accordingly. In the Mongolia section of the transect (from Tariat to Sainshand), the wind erosion rate increased gradually with vegetation type and climatic regimes; the wind erosion process was controlled by physical factors such as annual precipitation and vegetation coverage, etc., and the impact of human activities was negligible. While in the China section of the transect (Inner Mongolia), the wind erosion rates of Xilin Hot and Zhengxiangbai Banner were thrice as much as those of Bayannur of Mongolia, although these three sites were all dominated by typical steppe. Besides the physical factors, higher population density and livestock carrying level should be responsible for the higher wind erosion rates in these two regions of Inner Mongolia.

关键词：蒙古高原风蚀铯同位素追踪技术环境恶化

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