Peng Bu-zhuo

VERTICAL ZONATION OF LANDSCAPE CHARACTERISTICS IN THE NAMJAGBARWA MASSIF OF TIBET, CHINA

China has a rich variety of mountain vegetation and soil types, displaying characteristic zoning at different altitudes. Vertical zonation of landscape characteristics is also influenced by longitude, latitude, aspect, and microclimate. Namjagbarwa Feng (7,782 m) is situated in the eastern Himalaya and has a relative relief of over 7,000 m. It has a range of vertical landscape zones from quasi-tropical to snow and ice conditions and the characteristics and structural pattern of these zones are described. Factors that account for regional variation in landscape characteristics within the Namjagbarwa massif are discussed. ZUSAMMENFASSUNG Vertikale Zonierung von Landschaftsmerkmalen im Namjagbarwna Massiv von Tibet, China. Ffir die ausserordentliche Vielfalt der Gebirgsvegetation und der Bodenarten in China k6nnen charakteristische Merkmale in verschiedenen H6henlagen bestimmt werden. Bei der vertikalen Zonierung der Landschaftsmerkmale sind ausserdem geographische LUnge, Breite, Lage und Mikroklima wichtig. Das Relief erstreckt sich fiber mehr als 7.000m, wenn der Namjagbarwa-Feng (7.782m) im 6stlichen Himalaya als Bezugspunkt dient. Das vertikale Landschaftsbild reicht von quasi- tropischen bis zu Eis- und Schneezonen. Die Merkmale und der strukturelle Aufbau in den Zonen werden beschrieben. AuBerdem werden die Faktoren, die die regionalen Abweichungen im Landschaftscharakter innerhalb des Namjagbarwa Massivs ausmachen, diskutiert.

SPATIAL DIFFERENTIATION OF LAND TRANSFER——Case Study of Shanghai, Nanjing and Taizhou in Changjiang River Delta

The policy of land transfer has greatly influenced the macro economy of China with the commencement of another innovation of land use system. Therefore, it is urgent to put forward some rational and feasible suggestions for local government to manage the market of land transfer. Moreover, it is important in the field of study on agricultural land use change to analyze the spatial differentiation and structural specification of land transfer, which are caused by rural households’ behavior. This paper selected 11 factors covering four aspects of rural households’ family structure, family location, family income structure and the natural quality of land resources, all of which influence the behavior differentiation of rural households, to establish the index model indicating spatial differentiation of land transfer. Results show that the spatial differentiation of land transfer can be divided into four degrees and three categories through analyzing rural households’ questionnaires from Shanghai, Nanjing and Taizhou in the Changjiang (Yangtze) River Delta. Since up to 80% of rural households belong to middle degrees, it can be concluded that the rural land market develops evenly in the study areas. And it is also indicated that the natural quality of land resources and the maximum income of rural land are most important factors influencing the spatial differentiation of land transaction. Considering different factors, the countermeasures can be carried out to enhance the spatial differentiation of land transfer so as to promote economic development and social security of rural China. All in all, both microfactors and macro-factors influencing rural households’ behavior of rural land transfer should be taken into account in order to make spatial differentiation and structural specification of rural land transfer notable.

Responses of soil nutrient to driving mechanism in Taihu Lake basin in last 20 years

The objectives of this study is to understand the changing law of soil nutrient quality in Taihu Lake basin, Yangtze Delta in last 20 years, and reveal the relationship between soil nutrient changes and human driving forces in regional level over long period of time. Experiment on long-term collecting samples was conducted to study changes of soil organic matter, total N, available N, available P and available K in Dongting town, Wuxi city during the last 20 years. The paper analyses the co-relationship of the fluctuation of soil nutrient and state policy, cultivating practice, agricultural input, and per hectare agricultural net income. The results showed that at first the content of soil organic matter increased, then decreased, and increased again. The content of total N and available N steadily increased. The content of available K and available P steadily decreased. The authors found that the influence of state policy and cultivating practice on soil nutrient quality index (SNQI) is obvious, agricultural input and SNQI are positively correlated, and per hectare agricultural net income and SNQI are negatively correlated.

Geo-Ecology of Mts. Namjagbarwa Region

Mt. Namjagbarwa, with the peak at altitude of 7,782 m asl, is the highest one in East Himalayas. The high mountains standing beside deep valley, is located at the inner of moisture corridor around the bending of the Yarlung Zangbo River, having rather complete vertical natural belts.

Migration characteristics of microelements in process of landscape geochemistry in Mt. Namjagbarwa area

To provide scientific basis for appraising natural resources in Mt. Namjagbarwa area, the migration characteristics of geochemical microelements, such as Zn, V, Ti, Pb, Ni, Cu, Cr, Co, Be and Ba, in the landscape zones of alpine scrub and meadow, the mountainous dark coniferous forest, the mountainous mixed broadleaf and coniferous forest, the mountainous quasi-subtropical semi-evergreen broadleaf forest, the mountainous subtropical evergreen broadleaf forest, and the valley quasi-tropical monsoon rainforest have been described in the paper.To provide scientific basis for appraising natural resources in Mt. Namjagbarwa area, the migration characteristics of geochemical microelements, such as Zn, V, Ti, Pb, Ni, Cu, Cr, Co, Be and Ba, in the landscape zones of alpine scrub and meadow, the mountainous dark coniferous forest, the mountainous mixed broadleaf and coniferous forest, the mountainous quasi-subtropical semi-evergreen broadleaf forest, the mountainous subtropical evergreen broadleaf forest, and the valley quasi-tropical monsoon rainforest have been described in the paper.

Correlation between Urban Land Change Process and Socioeconomic Development since the 1980s in Jiangsu Province

Abstract Studying the process and characteristics of urban land change in different phases of urbanization and different economic development is much important for understanding urban land change and management at a macro level. Taking the example of Jiangsu Province, the present paper studied the correlation between urban land change process and socioeconomic development from 1981 to 2003 on the basis of statistical data. The results showed the following three aspects. First, urban land area has changed periodically and the research duration can be divided into two periods: from 1981 to 1994 and from 1995 to 2003. In each period, the changing trend is the same, i.e. slow at first and then quick. Studying from the comprehensive change status, the characteristic of fluctuant change is significant with three acute change pinnacles in 1988, 1991 and 2002 which were corresponded to turning point years of economic development phases of Jiangsu Province respectively. Second, the synchronization between urban land change and urbanization level change is not strict. With the evolution of urbanization phases, the change pace of urbanization level increased remarkably, but urban land change rate did not increase significantly accordingly. Third, the area of urban land has exponentially increased with the increase of per capita GDP. In different economic development levels classified by per capital GDP, land resource cost for economic development is different, respectively 29.01 hm2, 26.34 hm2, 26.22 hm2, and 11.14 hm2 for the increase of 100 million RMB GDP when the per capita GDP is under 1000, 1000–2000, 2000–5000 and over 5000 RMB.

Coordinative development between land use change and regional Population-Resources-Environment-Development System—A case study of Jiangsu Province

Land use change has significant influence on the operation of the Population-Resources-Environment-Development (PRED) System. Moderate land use is the key factor to ensure the coordinative and sustainable development between land use and PRED system. Based on the internal relationship between land use and PRED system, a PRED evaluation index system and a Press-Status-Response (PSR) model were established in this study. According to the expounding on the mechanism of the PSR model, we investigated the coordinative development between the changes of regional land use and PRED system taking Jiangsu Province as an example. The results showed that the orders of the Synthetic Index of Land Use (SILU) and the Variation of PRED Index (VPI) in Jiangsu are both the southern Jiangsu>the central Jiangsu>the northern Jiangsu. A cubic curve model was used to fit the relationship between the VPI and SILU. The inflection point of VPI was situated in 5.0 of SILU. When SILU was below 5.0, VPI increased with SILU, which will be helpful to the coordinative development between land use and PRED system. Based on those results, it is suggested that the land use degree of the southern Jiangsu, especially that of Nanjing City, should be moderately controlled at present, while land resources of the central Jiangsu and the northern Jiangsu should be further exploited.