Mechanization of irrigated rice cropping regions in China

The mechanization of rice production in China has experienced a comparatively long and an undulating process. The full-scale making of mechanization of irrigated rice cropping regions was started at the mid 1960’s, later than that of upland cropping and its average level of mechanization operation also lower than the average level of the country. During this peiod, however, a series of mechines were created, which adapted to the characteristics of rice cropping regions in China, and the foundation was laid for the later paddy field machinery. For example, transplanting machine (created in 1956), boat—shaped tractors (1961), paddy field ploughing and harrowing serial (1974), and single wheel plowing machines (1979) etc.

Wavelet analysis of quasi-3-year temperature oscillations in China in last 50 years, and predicted changes in the next 20 years

The wavelet analysis method is used to analyze the annual and winter temperature data of 98 observation stations in China in eight climate zones during the last 50 years （1961-2009）. The periodicities of temperature changes are investigated, and the possible temperature change trends in China in the next 20 years （2012-2029） are also predicted. Our results show that in the inter-annual temperature variability there are pervasive quasi-3- to quasi-4-year cycles, and these cycle changes are relatively steady. The periodic characteristics of the annual temperature changes are clearly different between northern and southern China, and our period superimposition extrapolation shows that both annual and winter temperatures in China will continue to increase in the next 20 years, more so in northern China and in the Qinghai-Xizang Plateau （QXP） than in the southern region, except in the southwest. If temperatures follow historic increasing linear trends, the overall temper- ature is expected to increase by 1℃ between 2010 and 2029.

Regional Distribution of Cotton Fiber Quality in China

The fiber quality status is very important for super quality cotton production and diverse requirements of textile industry in China.In this study,the quality of cotton fiber samples which are collected from 13 major cotton production provinces between 2001 to 2005 were analyzed.Eight quality

The Regional Conference of the IGU on Asian Pacific Countries Successfully Held in China

TheThe Regional Conference on Asian Pacific Countries of the IGU was held from August 13 to 19,1990 at Beijing,on the premises of Peking University.It was the first of such event of the Union to take place in China.The Conference was attended by 1017 geographers from 40 countries of six continents(Asia 788,Europe 125,North America 74,Oceania 15,Latin America 7,Africa 3),with the larger delegations from:U.S.A.(45),South Korea(44),Japan(31),France(18),Italy(17),FRG(16),Canada(16),U.S.S.R.(13),Australia(10),Spain(9),U.K.(8)and India(8).China composed the majority,and Taipei sent a sizable delegation of 15,the rest of the participating countries sent 1-4 delegates each.The organizing committee of the Conference included the executive committee members of the Geographical Society of China and members of China Committee for the IGU.Profs.Huang Bingwei and Wu Chuanjun were responsible for all the activities organized during the Conference.

Natural conditions and cropping regionalization of rice area in China

The formation of rice distribution is based on certain natural ecological conditions and social economic environments. In China, rice cropping is distributed in a vast area extending across 5 tempera ture belts, the northernmost of rice growing area in the world being in China. Distribution of rice cropping is characterized by a gradual decrease from south to north, from large and concentrated regions in Southeast to small and separated areas in Northwest. Natural conditions in rice regions differ in China with a varied topography, high in the west and low in the east. Rice fields in the west are mostly distributed on flatlands on plains, valleys among mountains, tablelands in river valleys, yellow-soil plains and basins in low valleys, alluvial plains, plains in river valleys, while those in the east are mainly distributed on alluvial plains, hilly areas among low mountains, coastal plains, along rivers and lakes and in basins among mountains.

Changes in China's Regional Development Strategy and FDI Policy in Western Region

Chinahaswitnessedremarkableeconomicachievementssinceinitiatingitsreformandopening-uppolicyin1979.However,thewesternregion,coveringsome56percentofChina'sterritoryandaccountingfor50percentofveritieddepositsofmineralresources,hasnotenjoyedthesamedegreeo...

SiZer for exploration of inhomogeneous structure in temporal distribution of earth-quakes

In this paper, the inhomogeneous structure of generalized seismic strain release time series (GSSRTS) of earth- quakes in East, West China and their subtectonic regions as Xinjiang, Qinghai-Xizang (Tibetan) Plateau, Northeast China, North China, South China and Taiwan have been analyzed by using the method of significant analysis on zero crossings of derivatives (SiZer). Results show that when index η for estimating GSSRTS is close to zero and bandwidth is large enough, GSSRTSs feature significant increasing in Xinjiang, Northeast China, South China and Taiwan tectonic regions and decreasing in Qinghai-Xizang (Tibetan Platean) and North China tectonic regions from January 1, 1970 to January 1, 2000. While with the dwindling of bandwidth GSSRTSs in all the above tec- tonic regions characterize clustering, that is to say, significant increasing and decreasing emerge alternatively. When η is large enough, GSSRTSs would have no significant statistical variation in most of above tectonic regions except Qinghai-Xizang (Tibetan Platean) and Taiwan where significant increasing or decreasing hold in several time intervals within limited bandwidths.

Intercomparison of multi-model ensemble-processing strategies within a consistent framework for climate projection in China

Climate change adaptation and relevant policy-making need reliable projections of future climate.Methods based on multi-model ensemble are generally considered as the most efficient way to achieve the goal.However,their efficiency varies and inter-comparison is a challenging task,as they use a variety of target variables,geographic regions,time periods,or model pools.Here,we construct and use a consistent framework to evaluate the performance of five ensemble-processing methods,i.e.,multimodel ensemble mean(MME),rank-based weighting(RANK),reliability ensemble averaging(REA),climate model weighting by independence and performance(ClimWIP),and Bayesian model averaging(BMA).We investigate the annual mean temperature(Tav)and total precipitation(Prcptot)changes(relative to 1995–2014)over China and its seven subregions at 1.5 and 2℃warming levels(relative to pre-industrial).All ensemble-processing methods perform better than MME,and achieve generally consistent results in terms of median values.But they show different results in terms of inter-model spread,served as a measure of uncertainty,and signal-to-noise ratio(SNR).ClimWIP is the most optimal method with its good performance in simulating current climate and in providing credible future projections.The uncertainty,measured by the range of 10th–90th percentiles,is reduced by about 30%for Tav,and 15%for Prcptot in China,with a certain variation among subregions.Based on ClimWIP,and averaged over whole China under 1.5/2℃global warming levels,Tav increases by about 1.1/1.8℃(relative to 1995–2014),while Prcptot increases by about 5.4%/11.2%,respectively.Reliability of projections is found dependent on investigated regions and indices.The projection for Tav is credible across all regions,as its SNR is generally larger than 2,while the SNR is lower than 1 for Prcptot over most regions under 1.5℃warming.The largest warming is found in northeastern China,with increase of 1.3(0.6–1.7)/2.0(1.4–2.6)℃(ensemble’s median and range of the 10th–90th percentiles)under 1.5/2℃warming,followed by northern and northwestern China.The smallest but the most robust warming is in southwestern China,with values exceeding 0.9(0.6–1.1)/1.5(1.1–1.7)℃.The most robust projection and largest increase is achieved in northwestern China for Prcptot,with increase of 9.1%(–1.6–24.7%)/17.9%(0.5–36.4%)under 1.5/2℃warming.Followed by northern China,where the increase is 6.0%(–2.6–17.8%)/11.8%(2.4–25.1%),respectively.The precipitation projection is of large uncertainty in southwestern China,even with uncertain sign of variation.For the additional half-degree warming,Tav increases more than 0.5℃throughout China.Almost all regions witness an increase of Prcptot,with the largest increase in northwestern China.

A Book Review of Planning for Growth: Urban and Regional Planning in China

Planning for Growth:Urban and Regional Planning in China Author:Wu Fulong Year:2015Publisher:Taylor&Francis Ltd ISBN:9780415814423(248 pages,in English)The book,Planning for Growth:Urban and Regional Planning in China,written by Prof.Wu Fulong,is part of the Royal Town Planning Institute’s(RTPI)Library Series.It has drawn wide attention since its publication in 2015.The American urban sociologist John R.

Change of Regional Financial Development Disparity in China(1978-1999)

A large country will undoubtedly show development disparity among its regions: it is not surprising therefore that China would not have developed evenly. In analyzing China’s development features and its manner of enforcing relative policies, the various financial sectors in China cannot be simply regarded as a whole unit: a unified policy would not be suitable for the local conditions of a given area, otherwise it will lost its future direction. This paper measures China’s disparity of financial development during the period

Some Thoughts on the Across-the-Century Urban Development Strategy for the Coastal Region in China

After the reform and open-door policy.the economyin the coastal region of China has experienced great develop-ment and the urban space undergone a rapid expansion.The agglomeration of cities in the economically more devel-oped region has been amazing too.The investment environ-ment in the special economic zones and open cities of thecoastal region has been greatly improved,of which the mostdistinct areas are the Pearl Delta Area,the Yangtze DeltaArea,Jing-Jin-Tang Region and the middle and southernpart of Liaoning province. The so-called coastal region stretches from Liaoningto Guangxi and Hainan,including 12 provinces,autono-