Time filter

Source Type

Huang Q.,Hulunber Grassland Ecosystem Observation and Research Station | Xin X.,Hulunber Grassland Ecosystem Observation and Research Station | Zhang H.,Hulunber Grassland Ecosystem Observation and Research Station
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2010

With a primary consideration of the ecosystem service function of different grassland types, and basing on the principles of regional planning, methodology, nomenclature, the features of regional eco-environment, as well as "3S" techniques, The grassland and agro-pastoral transitional zone in northern China was classified into 3 ecological regions and 10 eco-function regions. Then, the elaborations were carried out in detail regarding the territory of each function region, primary eco-environment issues, core ecological service functions and means to be adopted for protection and sustainable development of each specific function region. We believe that the developed regionalization result is very helpful in understanding the ecological service function value of different grassland types, facilitating effective use of grassland resources, promoting optimal layout of agricultural production, improving the regional ecological security, as well as strengthening the regional sustainable development in the grassland and agro-pastoral transitional zone of northern China.


He Y.,Key Laboratory of Resources Remote Sensing and Digital Agriculture | He Y.,Hulunber Grassland Ecosystem Observation and Research Station | He Y.,Chinese Academy of Agricultural Sciences | Tang H.,Chinese Academy of Agricultural Sciences | And 8 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2010

In order to make up for the lack of evaluation index system of land cultivation suitability for expressing farmers' inclination and ecological limiting factors, the land cultivation suitability evaluation for the desertification regions of China was implemented by applying index system based on ecological restriction factors. The results showed that: with policy scenario of food security, the areas with high-level suitability for land cultivation concentrated on the part of the sub-humid and semi-arid areas with the total area of about 37×104 km2. With policy scenario of ecology and environmental protection, the areas with high-level land suitability for cultivation concentrated on the South Inner Mongolia, the South Tibet and the North Xinjiang Municipality with the total area of about 26.9×104 km2. Since the setting of the different policy scenarios, the reduction regions of high-level land suitability spatially distributed in the eastern parts of the Inner Mongolia and the southern parts of Tibet. This study explored the method for land suitability at large scale and multi-index system, especially application of ecological limiting factors with different policies.


Huang Q.,Chinese Academy of Agricultural Sciences | Huang Q.,Hulunber Grassland Ecosystem Observation and Research Station | Tang H.,Chinese Academy of Agricultural Sciences | Tang H.,Hulunber Grassland Ecosystem Observation and Research Station | And 4 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2010

Taking the main crops in Northeast China as an example, large-scale crop planting areas automatic identification methods were researched based on time-series of MODIS NDVI Datasets in this paper. The characteristics of NDVI time series of spring wheat, spring corn, soybeans and rice in Northeast China were firstly analyzed, and then the threshold values of extracting different crops were set and the extraction models of above-mentioned four kinds of crops were established, and finally the spatial distribution of these four crops of 2009 were obtained. MODIS data of Northeast China of 2009 were used to monitor the growth condition of the four kinds of crops, and the growth condition were compared with the average crop growth of last five years. The results showed that the extraction accuracy of crops planting structure was more than 87% compared with what with years of average statistical data, and crops growth condition showed different characteristics both in spatial and temporal. Research shows that it is feasible to extract different crops planting structure and monitor crops growth condition in large scale using MODIS data, which provides effective ways for large scale crops planting structure extraction in China agriculture remote sensing monitoring system.


He Y.,Key Laboratory of Resources Remote Sensing and Digital Agriculture | He Y.,Hulunber Grassland Ecosystem Observation and Research Station | He Y.,Chinese Academy of Agricultural Sciences | Chen Y.,Key Laboratory of Resources Remote Sensing and Digital Agriculture | And 5 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2010

Analysis on spatial structure characteristics of land use is very significant for reasonable land use in the future of Beijing, where was the study area. This paper, from landscape, economic and ecological points of view, expounded spatial structure characteristics of land use of Beijing. And a series of indexes such as land use diversity, land use extent, economic density and ecological value were applied to analyze the spatial structure characteristics of land use for the year 2006. These indexes were all gridded with 1 km×1 km cells to detect spatial heterogeneity. The results showed that land use category of Beijing was complete in 2006. The land use, cover diversity index and the land use extent index turned out to be gradually increasing from the mountainous regions in northwest Beijing to the plain regions in southeastern part. The average land economic density of Beijing for 2006 was 47.97×106 RMB/km2. Meanwhile, the economic density of forestland was minimum, on the contrary, that of urban and town characterized by concentration and aggregation was maximum. The total ecosystem services value for the study area was 13 488.13×106 RMB with the average of 0.82×106 RMB/km2, which was a little bit higher than the national average level. Authors suggested efficiency and effectiveness of land use need to be further improved to make land use of Beijing more sustainable.


He Y.,Hulunber Grassland Ecosystem Observation and Research Station | He Y.,Chinese Academy of Agricultural Sciences | Yao Y.,Hulunber Grassland Ecosystem Observation and Research Station | Yao Y.,Chinese Academy of Agricultural Sciences | And 3 more authors.
Proceedings - International Conference on Computer Distributed Control and Intelligent Environmental Monitoring, CDCIEM 2011 | Year: 2011

Shouyang County which partly locates on the Loess Plateau suffers severe soil and water erosion and is characterised by ecological vulnerability and semi-arid climate. Land suitability evaluation for tree crops is very significant for agricultural production in the ecologically vulnerable regions of semi-arid Cone. The authors applied a upscaling approach to carry out land suitability for the four local tree crops of apple, pear, jujube and hawthorn under the traditional cultivation senario. The upscaling was implemented in a land form hierarchy which was composed of land unit, land facet and land site at three spatial levels. The IAO land suitability evaluation model for crops was revised by appling a meteorological revision index. The results showed that a polarised phenomenon occurred, which means that the most suitable class (SI) and the most unsuitable class (N2) were predominant in acreage percentage for all the four tree crops in the study area. We proposed that cropland use policies should pay more attention to putting more investment for agricultural production in the suitable regions. It is necessary to balance the relationship between the livelihood of local farmers and environmental protection to maintain a healthy and stable ecosystem. © 2011 IEEE.


PubMed | Hulunber Grassland Ecosystem Observation and Research Station
Type: Journal Article | Journal: Ying yong sheng tai xue bao = The journal of applied ecology | Year: 2010

Time-series MODIS NDVI datasets from 2000 to 2008 were used to study the spatial change trend, fluctuation degree, and occurrence time of the annual NDVImax of four typical grassland types, i.e., lowland meadow, temperate steppe, temperate meadow steppe, and upland meadow, in Hulunber Grassland. In 2000-2008, the vegetation in Hulunber Grassland presented an obvious deterioration trend. The mean annual NDVImax of the four grassland types had a great fluctuation, especially in temperate steppe where the maximum change in the mean value of annual NDVImax approximated to 50%. As for the area change of different grade grasslands, the areas with NDVImax between 0.4 and 1 accounted for about 91% of the total grassland area, which suggested the good vegetation coverage in the Grassland. However, though the areas with NDVImax values in (0.4, 0.8) showed an increasing trend, the areas with NDVImax values in (0.2, 0.4) and (0.8, 1) decreased greatly in the study period. Overall, the deteriorating grassland took up about 66.25% of the total area, and the restoring grassland took the rest. There was about 62.85% of the grassland whose NDVImax occurred between the 193rd day and the 225th day in each year, indicating that this period was the most important vegetation growth season in Hulunber Grassland.

Loading Hulunber Grassland Ecosystem Observation and Research Station collaborators
Loading Hulunber Grassland Ecosystem Observation and Research Station collaborators