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| 1 | Urban land expansion and arable land loss of the major cities in China in the 1990s显示文摘Based on the land-use data in 1990 and 2000, determined by interpreting Landsat Thematic Mapper (TM) imagery, this paper defines the extent of urban construction land, and extracts patches of urban construction land of 145 cities with the largest areas in 1990 and arable land patches around these cities. With these data, this paper analyzes the characteristics of ur- ban construction land expansion and the consequent arable land loss in East, Middle and West China, and further identifies the social, economic and spatial factors of the urban land use changes, using GIS (Geographical Information System) and multivariate regression approaches. The results show that total urban land of the 145 cities expanded by 39.8%, with about 70% of the new urban land converted from arable land in the 1990s. The urban land expansion varied among the three regions, with a value of 43.0% in the East, 33.1% in the West (33.1%) and 17.8% in the Middle. Moreover, mean urban construction land per capita increased by10.7% in the East, but it decreased by 7.7% in the Middle, 1.4% in the West. Statistical analysis indicated that total wages of staff and workers could best explain the differences of urban land expansion. | TAN Minghong LI Xiubin LU Changhe | 2005 | Science China Earth Sciences2005，48，9： | 32 |
| 2 | Change of Cultivated Land and Its Implications on Food Security in China显示文摘The population growth and demand for high living standard not only increase food demand but also cause more loss of the limited cultivated land resources.Cultivated land loss caused by disasters and the implementation of the “Conversion of Cropland to Forest or Grassland” project make this situation even worse in China.Thus,there is a problem to be solved imminently that to what extent the cultivated land can guarantee food security of China.Based on time-series data on food production and cultivated land area from 1989 to 2003 and other research results,this paper constructs quality index of cultivated land according to different land quality.Regression models are adopted to predicate changes of main factors from 2004 to 2030,which have great effect on cultivated land area or grain productivity,and verify accuracy with coefficient of determination(R2).Nine results were got according to three scenarios of decreasing rate of population growth rate and three cases of urban and rural built-up area per capita.There results show that China’s food supply can only be maintained at a low to middle level of 370-410kg per capita,that is,China has enough land productivity to meet primary demand of food independently.However,it cannot reach the safe target of 500kg per capita if there is no breakthrough in breeding or no remarkable improvement of irrigation works,when the grain self-sufficiency maintains no less than 80%.To breed productive crops and to improve land productivity by meliorating low quality cultivated land are appropriate measures to shrink the gap between food demand and supply.The results may offer helpful information for the formulation of policies on population growth,land use,protection of cultivated land. | YU Bohua LU Changhe | 2006 | Chinese Geographical Science2006，16，4： | 19 |
| 3 | Production potential and yield gaps of summer maize in the Beijing-Tianjin-Hebei Region显示文摘庄稼潜力生产率是科学地估价庄稼生产的一个关键索引并且打支持人口的能力。这研究第一与 40 年的气象学的数据用 WOFOST 模型在 Beijing-Tianjin-Hebei (BTH ) 区域模仿了潜力和夏天玉米的 waterlimited 产量,然后在县水平基于统计数据分析了在实际、潜在的收益之间的收益差距。潜力和在 BTH 区域的夏天玉米的水有限产量是 68548789 kg/hm2 和 64348741 kg/hm2,并且为整个区域的加权的一般水准分别地是 7861 kg/hm2 和 7185 kg/hm2。模仿的收益逐渐地特别地处于气候的条件与变化从东北减少到西南温度和降水。潜在的产量的年度变化比东北部分在中央、南部的部分是更高的。把产量比作潜力,水有限收益有变化(CV ) 的更高的系数,因为降水效果。夏天玉米的实际收益是 25378730 kg/hm2,地区性在 5582 点平均 kg/hm2,大约 70% 潜力让步,暗示这个区域有空间由改进庄稼管理和灌溉系统增加收益。 | WANG Tao LU Changhe YU Bohua | 2011 | Journal of Geographical Sciences2011，21，4： | 13 |
| 4 | Assessing changes in wind erosion climatic erosivity in China's dryland region during 1961-2012显示文摘 | YANG Fengbo LU Changhe | 2016 | Journal of Geographical Sciences2016，26，9： | 11 |
| 5 | Farmland changes and the driving forces in Yucheng, North China Plain显示文摘拿 Yucheng,在是的山东省的一个典型的农业县一个盒子,应用逻辑回归建模空间地识别影响农田的因素的这研究变化。用在 2001 和 2009 的高分辨率形象的二个阶段,学习在 20012009 获得了陆地使用和农田变化数据。农田被 5.14% 在时期减少,这被发现,主要由于到森林土地的农田变换并且布满建筑物土地,尽管森林土地的部分和闲置的土地被变换成农田。逻辑回归的结果显示那个地点,人口生长和农民收入是影响农田变换的主要因素,当土壤打字时并且支持弯曲是控制农田变化的分发的主要自然因素。地区性的差别和农田变化的时间空间的变量影响了逻辑回归模型的恰当的能力。巨鸟恰当的测试显示逻辑回归模型给了地区性的陆地使用变化的好解释。逻辑回归分析是一个好工具鉴别影响陆地使用的主要因素由确定改变每个因素的贡献。 | Chen Zhao Lu Changhe Fan Lan | 2012 | Journal of Geographical Sciences2012，22，3： | 7 |
| 6 | Trends of Urban Air Pollution in Zhengzhou City in 1996-2008显示文摘Urban air pollution is a commonly concerned environmental problem in the world.Identification of air quality trend using long-term monitoring data is helpful to understand the effectiveness of pollution control strategies.This study,using data from six monitoring stations in Zhengzhou City,analyzed the changing trend in concentrations of SO 2,NO x /NO 2 and TSP/PM 10 in 1996-2008,based on non-parametric Mann-Kendall test and Sen's slope estimator,and evaluated the comprehensive air pollution level using Multi-Pollutant Index(MPI).It was found that the concentration of each pollutant exceeded obviously the World Health Organization(WHO) guideline value,but the changing trend varied:SO 2 and NO 2 were significantly increased mainly due to an increase in coal consumption and vehicle number,while NO x,TSP and PM 10 decreased.The air pollution was serious,and differed markedly among the three functional regions:it is the most severe in the Industrial and Residential Area(IRA),followed by the Transportation Hub and Business District(THBD),and then the High-tech,Cultural and Educational Area(HCEA).Different from NO 2 concentration that had a similar change trend/rate among the function regions,the change rate of PM 10 concentration differed spatially,decreased much more obviously in THBD than other two regions.For the whole city,the comprehensive air pollution level declined gradually,illustrating that the air quality in Zhengzhou was improved in the last decade. | DU Xile LU Changhe WANG Hairong MA Jianhua | 2012 | Chinese Geographical Science2012，22，4： | 6 |
| 7 | Aridity trend and response to vegetation restoration in the loess hilly region of northern Shaanxi Province显示文摘处于干燥湿的条件检测变化趋势能为开发战略措施减轻全球温暖的影响提供信息,特别地在干燥区域。作为一个盒子区域在黄土高原上拿北 Shaanxi 的多山的区域,这研究在 19812012 期间分析了干旱变化的趋势,并且探索了在 1999 实现的 Grain-for-Green (GFG ) 节目支持的植被恢复的效果。结果显示在这个区域的干旱被 0.88% 非显著地在 19812012 期间每年增加,显示出一个弄干的趋势。这个弄干的趋势和振幅被 GFG 节目支持的植被恢复的影响改变,基于二调查结果。第一是干旱变化趋于在 19811999 期间增加当它转弯了在 20002012 期间减少时,与从 2.45% ~ 1.06% 改变的地区性的吝啬的相对变化率。这区别在黄土溪谷区域是更显著的,在植被更显然被改进的地方。第二是由 EVI 显示了的吝啬的植被范围在县水平每年增加了 0.90% ~ 4.32% ,当干旱在 20002012 期间每年在 0.14% ~ 2.32% 减少了时。用吝啬的县数据的回归分析显示变化干旱评价,在干旱衰落的一半附近说明那是否定地与有决心的系数的 EVI 的有关(R < 啜 class= “ a-plus-plus ” > 0.56 的 2 ) 被 EVI 变化解释。这效果的机制是复杂的,但是植被改进导致的风速度衰落能是一个重要贡献者,这被发现。这个区域在 19812012 期间变得更干燥,这被结束,但是 eco 恢复减少了弄干的速度。然而,这个结论涉及无常,并且进一步的学习基于实验被需要证实支持 GFG 的植被恢复的效果。 | LI Wangjun LU Changhe | 2015 | Journal of Geographical Sciences2015，25，3： | 4 |
| 8 | Impacts of Sloping Land Conversion Program on the vegetation in loess hilly and gully area of northern Shaanxi显示文摘Aiming at alleviating the serious soil erosion, the Chinese government initiated the Sloping Land Conversion Program (SLCP) in 1999. Now, after 8 years of project implementation, the ecological recovery effects of the SLCP have become the hot issue of academic circle. This paper, taking the loess hill and gully area of northern Shaanxi as an example, presents a methodology for assessing the vegetation restoration effect of SLCP with normalized difference vegetation index (NDVI). The key components include calculation of the Growing Season NDVI (GSNDVI), and estimation of the NVDI change induced by climate and SLCP, respectively. Based on the method, the NDVI change between 2000 and 2006 was obtained using the GSNDVI that excluded the noise from snow and ice. After the part of total NDVI change caused by climate variation was estimated using empiric formulae, we obtained the part induced by human factors, i.e. the SLCP. The human induced part of NDVI change was considered as an approximation indicating the effect of the SLCP on the vegetation. Finally, we analyzed the NDVI change characters of the whole study area, different slope lands and different land use types by spatial statistics method. Results show that the vegetation condition is significantly improved by the SLCP, particularly land types that directly involved in the SLCP, such as steeply slope farmlands, degraded grasslands, etc. | Ma Junfei Lu Changhe Yu Bohua | 2009 | Ecological Economy2009，5，2： | 3 |
| 9 | Region-based bas-relief generation from a single image显示文摘 | Qiong Zeng Ralph R. Martin Lu Wang Jonathan A. Quinn Yuhong Sun Changhe Tu | 2013 | Graphical Models2013，，： | 1 |
| 10 | Urban land expansion and arable land loss in China-a case study of Beijing-Tianjin-Hebei region显示文摘 | MINGHONG TAN XIUBIN LI HUI XIE CHANGHE LU | 2005 | Land Use Policy2005，，22： | 1 |
| 11 | Urban Population Densities and Their Policy Implications in China显示文摘 | Minghong Tan Xiubin Li Changhe Lu | 2008 | Habitat International2008，32，4： | 1 |
| 12 | Urban land expansion and arable land loss in China—a case study of Beijing–Tianjin–Hebei region显示文摘 | Minghong Tan Xiubin Li Hui Xie Changhe Lu | 2004 | Land Use Policy2004，，3： | 1 |
| 13 | Polarization-dependent talbot effect显示文摘 | LU Yunqing ZHOU Changhe WANG Shunquan | 2006 | Journal of the Optical Society of America A2006，23，9： | 1 |
| 14 | Implica- tions for development of grain-for-green policy based on crop land suitability evaluation in desertification affected north China显示文摘 | Wang Xiuhong Lu Changhe Fang Jinfu | 2007 | Land Use Policy2007，24，2： | 1 |
| 15 | Somatic embryogenesis and plant regeneration from litichi protoplasts isolation from embryogenic suspensions显示文摘 | CHANGHE Y U ZHENGUANG CHEN LIUXIN LU JINWEN LIN | 2000 | Plant Cell Tissue and Organ Culture2000，61，： | 1 |
| 16 | The SLCP-driven land use changes and farmers' responses in the loess hilly and gully region:a case study for Ansai County显示文摘Taking Ansai County located in loess hilly and gully area as a case,this study analyzes the land use changes driven by the SLCP(Slope Land Conversion Program)and the farmers'responses by household survey and participatory rapid appraisal(PRA).It is found that the SLCP aroused various changes in land use,agricultural production,rural incomes,etc.In the period of 1999-2005,the farmland and grasslands were reduced by 26,809 ha and 17,571 ha respectively,while forestland increased by 38,203 ha;greenhouse vegetable and orchard got a quick development,with the area enlarged by about 7 times and nearly doubled respectively.The SLCP reduced the area of crops particularly those that normally grown on slope lands,e.g.the sowing area of winter wheat dropped from 19.39% of the total cropping area in 1999 to 0.98%in 2005.Draught animals,pigs and sheep have a decline in the number because the remained land and the ban on grazing on natural grasslands can not provide sufficient feed forage.Thanks to the financial subsidy,farmers increased land inputs and thus outputs.To achieve long-term sustain-able development and improve rural income,the government should continuously support farmers to improve the land management,to adopt alternative land use systems,and to increase inputs on soil conservation.Vegetable and fruit production are two promise land use systems,and should be further developed. | Wang Qian Lu Changhe Yu Bohua Ma Junfei | 2009 | Ecological Economy2009，5，4： | 1 |
| 17 | Polarization-dependent Talbot effect显示文摘 | LU Yunqing ZHOU Changhe WANG Shunquan | 2006 | J opt Soc Am A2006，23，： | 1 |
| 18 | Talbot effect of a grating with different kinds of flaws显示文摘 | LU Yunqing ZHOU Changhe LUO Hongxin | 2005 | J opt Soc Am A2005，22，： | 1 |
| 19 | Impli- cations for development of grain-for-green policy based on cropland suitability evaluation in desertification-af- fected North China显示文摘 | Wang Xiuhong Lu Changhe Fang Jinfu | 2007 | Land Use Policy2007，24，2： | 1 |
| 20 | Evaluation and Trend Analysis of Surface Water Quality in Zhengzhou in 1998-2008显示文摘Water pollution is one of the major environmental problems,especially in urban areas.Due to rapid urban expansion and industrialization,water pollution in Zhengzhou City,the capital of Henan Province in central China has become a serious problem for its development.In this study,the surface water quality was evaluated using Nemerow Comprehensive Pollution Index (NCPI),and the change trend was calculated using methods of Mann-Kendall test and Sen's slope estimator,based on the monitoring data from 1998 to 2008.The results show that the NCPI ranged from 3 to 50 in 70% of the monitoring cases,implying that most rivers were seriously polluted.However,this serious polltuon is expected to be gradually improved,as the concentration of water pollutants and NCPI declined significantly in most rivers.Water pollution in reservoirs was much lower than rivers,and the NCPI in the three monitored reservoirs was lower than 3 in most years,and shows a downward trend.Although the surface water quality was gradually improved,great efforts are still needed to enhance the protection and improvement of surface water environment. | Du Xile Lu Changhe | 2012 | Chinese Journal of Population,Resources and Environment2012，10，4： | 1 |
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