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| 1 | Cropland redistribution to marginal lands undermines environmental sustainability显示文摘Cropland redistribution to marginal land has been reported worldwide;however,the resulting impacts on environmental sustainability have not been investigated sufficiently.Here we investigated the environmental impacts of cropland redistribution in China.As a result of urbanization-induced loss of high-quality croplands in south China(~8.5 t ha^(-1)),croplands expanded to marginal lands in northeast(~4.5 t ha^(-1)) and northwest China(~2.9 t ha^(-1)) during 1990-2015 to pursue food security.However,the reclamation in these low-yield and ecologically vulnerable zones considerably undermined local environmental sustainability,for example increasing wind erosion(+3.47%),irrigation water consumption(+34.42%),fertilizer use(+20.02%) and decreasing natural habitats(-3.11%).Forecasts show that further reclamation in marginal lands per current policies would exacerbate environmental costs by 2050.The future cropland security risk will be remarkably intensified because of the conflict between food production and environmental sustainability.Our research suggests that globally emerging reclamation of marginal lands should be restricted and crop yield boost should be encouraged for both food security and environmental benefits. | Wenhui Kuang Jiyuan Liu Hanqin Tian Hao Shi Jinwei Dong Changqing Song Xiaoyong Li Guoming Du Yali Hou Dengsheng Lu Wenfeng Chi Tao Pan Shuwen Zhang Rafiq Hamdi Zherui Yin Huimin Yan Changzhen Yan Shixin Wu Rendong Li Jiuchun Yang Yinyin Dou Wenbin Wu Liqiao Liang Bao Xiang Shiqi Yang | 2022 | National Science Review2022，9，1： | 13 |
| 2 | Physiological and ultralstructural changes of Chlorella sp. induced by UV-B radiation显示文摘In order to investigate the mechanisms of enhanced UV-B radiation on algae, the effects of UV-B radiation on the physiological and ultrastructural changes of Chlorella sp. were examined. The results showed that UV-B radiation could inhibit the growth and photosynthesis of microalgae. UV-B radiation at lower doses increased the photosynthetic pigment (chlorophyll a (Chla) and carotenoid (Car)) contents, while at higher doses of UV-B radiation Chla and Car contents were decreased. The ultrastructure of Chlorella sp. without exposure to UV-B showed that the thylakoid lamellae were clear and regular, the stroma of its chloroplast was apparent and clear. The globules with photosynthetic pigments and the cristae of mitochondria were clearly seen. After exposure to UV-B radiation at dose of 2.88 kJ/m2, the thylakoid lamellae of Chlorella sp. were lost and dissolved, the globules which contained photosynthetic pigments in chloroplast were bleached; some mitochondria cristae were dissolved; slight plasmolysis was found in some Chlorella sp. cells. After exposure to 5.76 kJ/m2 UV-B radiation, the thylakoid was in disarray and disintegration, plasmolysis was found in most cells, and the cell wall was broken and began to fall out. Many blank areas were observed in cells, mitochondria were seriously deformed and most of the mitochondria cristae were dissolved. Also, globules containing photosynthetic pigments in chloroplast were bleached and some empty globules were found in chloroplast. Therefore, UV-B radiation could damage cell structure of Chlorella sp., and this damage increased with the dose of UV-B radiation they exposed to. | YU Juan TANG Xuexi ZHANG Peiyu TIAN Jiyuan DONG Shuanglin | 2005 | Progress in Natural Science:Materials International2005，15，8： | 2 |
| 3 | Spatial and temporal patterns of China’s cropland during 1990–2000: An analysis based on Landsat TM data显示文摘 | Jiyuan Liu Mingliang Liu Hanqin Tian Dafang Zhuang Zengxiang Zhang Wen Zhang Xianming Tang Xiangzheng Deng | 2005 | Remote Sensing of Environment2005，，4： | 2 |
| 4 | Industrial land expansion in rural China threatens environmental securities显示文摘China’s rural industrialization has been a major driver for its rapid economic growth during the recent decades,but its myriad environmental risks are yet to be fully understood.Based on a comprehensive national land-use data set,our study shows that the area of China’s rural industrial land(RIL)quadrupled during 1990–2015,reaching 39338 km2 in 2015,comparable to urbanization in magnitude but with a much greater degree of landscape fragmentation which implies stronger ecological and environmental impacts.About 91%of the protected areas in the central China were within 50 km from rural industrial land,thus exposed to industrial disturbances.Accelerated rural industrial land expansion,particularly in regions under high geo-hazard risks,led to dramatically increased environmental risks,threatening the safety and health of both rural industrial workers and residents.Moreover,negative effects from rural industrial land expansion could partially offset the crop production growth in recent decades.The underprivileged rural population in the west bears a disproportionally large share of the increased environmental risks.China urgently needs to design and implement sustainable policies to restrict and reshape its rural industrialization.This study aims to inspire policy makers and researchers to rethink the current model of industrial expansion and improve rural industrial land planning,which is important for achieving the sustainable development goals of China. | Chi Zhang Wenhui Kuang Jianguo Wu Jiyuan Liu Hanqin Tian | 2021 | Frontiers of Environmental Science & Engineering2021，15，2： | 2 |
| 5 | Spatial and temporal patterns of China' s cropland during 1990-2000: An analysis based on Landsat TM data显示文摘 | Liu Jiyuan Liu Mingliang Tian Hanqin | 2005 | Remote Sensing of Environment2005，98，： | 1 |
| 6 | Spatial and temporal patterns of China's cropland during 1990-2000 :An analysis based on landsat TM data显示文摘 | Liu Jiyuan Liu Mingliang Tian Hanqin | 2005 | Remote Sensing of Enviroment2005，98，： | 1 |
| 7 | Urban functional structure characteristics and transformation in China 显示文摘 | Tian Guangjin Liu Jiyuan Zhang Zengxiang | 2002 | Cities2002，，4： | 1 |
| 8 | Carbon storage in northeast China as estimated from vegetation and soil inventories显示文摘 | Shaoqiang Wang Chenghu Zhou Jiyuan Liu Hanqin Tian Kerang Li Xiaomei Yang | 2001 | Environmental Pollution2001，，： | 1 |
| 9 | Chitosan mierospheresas candidate plasmid vaccine carrier for oral immunisatlon of Japanese flounder ( Paralichthys olivaceus ) 显示文摘 | Jiyuan Tian Juan Yu Xiuqin Sun | 2008 | Veteri- nary Immunology and Immunopathology2008，126，34： | 1 |
| 10 | Spatial and Temporal Patterns of China's Cropland during 1990-2000:An Analysis Based on Landsat TM data显示文摘 | Liu Jiyuan Liu Mingliang Tian Hanqin | 2005 | Remote Sensing of Environment2005，，98： | 1 |
| 11 | Climate extremes and ozone pollution:a growing threat to China’s food security显示文摘Ensuring global food security requires a sound understanding of climate and environmental controls on crop productivity.The majority of existing assessments have focused on physical climate vari-ables(i.e.,mean temperature and precipitation),but less on the increasing climate extremes(e.g.,drought)and their interactions with increasing levels of tropospheric ozone(O3).Here we quantify the combined impacts of drought and O3 on China’s crop yield using a comprehensive,process-based agricultural eco-system model in conjunction with observational data.Our results indicate that climate change/variability and O3 together led to an annual mean reduction of crop yield by 10.0%or 55 million tons per year at the national level during 1981-2010.Crop yield shows a growing threat from severe episodic droughts and in-creasing O3 concentrations since 2000,with the largest crop yield losses occurring in northern China,causing serious concerns in food supply security in China.Our results imply that reducing tropospheric O3 levels is critical for securing crop production in coping with increasing frequency and severity of extreme climate events such as droughts.Improving air quality should be a core component of climate adaptation strategies. | Hanqin Tian Wei Ren Bo Tao Ge Sun Art Chappelka Xiaoke Wang Shufen Pan Jia Yang Jiyuan Liu Ben SFelzer Jerry MMelillo John Reilly | 2016 | Ecosystem Health and Sustainability2016，2，1： | 1 |
| 12 | Spatial and temporal patterns of China\'s cropland during 1990-2000: An analysis based on Landsat TM data显示文摘 | Liu Jiyuan Liu Mingliang Tian Hanqin | 2005 | Remote Sensing of Environment2005，98，4： | 1 |
| 13 | Spatial and temporal patterns of China's cropland during1990- 2000: An analysis based on Landsat TM data显示文摘 | Liu Jiyuan Liu Mingliang Tian Hanqin | 2005 | Re- mote Sensing of Environment2005，98，4： | 1 |
| 14 | Spatial and temporal patterns of China's cropland during 1990-2000: An analysis based on Landsat TM显示文摘 | Liu Jiyuan Liu Mingliang Tian Hanqin | 2005 | Remote Sensing of Environment2005，98，： | 1 |
| 15 | Pattern and change of soil organic carbon storage in China: 1960s-1980s显示文摘 | Wang Shaoqiang Tian Hanqin Liu Jiyuan | 2003 | Tellus B2003，55，2： | 1 |
| 16 | Analysis of spatio-temporal dynamic pattern and driving forces of urban land in China in 1990s using TM images and GIS 显示文摘 | Tian Guangjin Liu Jiyuan Xie Yiehun | 2005 | Cities2005，22，6： | 1 |
| 17 | Surface modeling of human carrying apacity of terrestrial ecosystems in China显示文摘 | Yue Tianxiang Tian Yongzhong Liu Jiyuan | | 0，，2： | 1 |
| 18 | Chitosan microspheres as candidate plasmid vaccine carrier for oral immunisation of Japanese fiounder (Paralichthys olivaceus)显示文摘 | Tian Jiyuan Yu Juan Sun Xiuqin | 2008 | Veterinary Immunology and Immunopathology2008，126，： | 1 |
| 19 | Pools and distributions of soil phosphorus in China 显示文摘 | Zhang Chi Tian Hanqin Liu Jiyuan | 2005 | Global biogeochemical cycles2005，19，1： | 1 |
| 20 | Surface modeling of human carrying capacity of terrestrial ecosystems in China显示文摘 | Yue Tianxiang Tian Yongzhong Liu Jiyuan | | 0，，2： | 1 |
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