نتایج جستجو برای: cultivated land of region
تعداد نتایج: 21200887 فیلتر نتایج به سال:
Comprehending the change characteristics and controlling factors of regional cultivated land resources is one important preconditions for their healthy development. The main objective this study to analyze spatial–temporal variation in Yangtze River Delta region. Thus, mathematical–statistical, use dynamic degree model, principal component analysis, geographically weighted regression model were...
In the semi-arid part of northern Tanzania, the native tropical woodland is undergoing a rapid conversion into agricultural land. This has resulted in drastic ecological changes in the region. This study was undertaken to investigate the effects of these changes in land use systems on the amount and composition of SOM in bulk soil samples and size separates. Samples were collected from the uppe...
with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...
This paper analyzes the processes and characteristics of urbanization in Shanghai, focusing on the population and land use and land cover (LULC) change, and its correlation with the evolution of climatic and ecological indicators based on the historical land use data, meteorological station data, social statistical data, normalized difference vegetation index (NDVI) and land surface temperature...
Since 1949, the data of land tenure has a positive effect on reconciling land tenure conflicts, defining the scope of collective land and state-owned land, implementing the system of cultivated land protection and land use control, designing general land use planning, accelerating information-based land resource management, etc. The emphasis in the near future should be placed on establishing r...
The impacts of land utilization change on the ecosystem service values in Daqing during 1995 to 2015 were analyzed based on unit area ecosystem service value of Chinese territorial ecosystem from Mr. Xie Gaodi and ecosystem service value calculation formula from Costanza. Results showed that the ecosystem service value of Daqing decreased from US $4343.1559m in 1995 to US $3824.327m in 2015, wi...
Since 1949, the information of land tenure has a positive effect on defining the scope of collective land and state-owned land, implementing the system of cultivated land protection and land use control, designing general land use planning, etc. But as the economic and social development, the existing land tenure information is not appropriate anymore and results in many problems. The emphasis ...
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