干旱区生态环境知识资源中心(Arid): 基于Landsat TM影像的半干旱牧区天然打草场面积的遥感监测

Arid

	基于Landsat TM影像的半干旱牧区天然打草场面积的遥感监测
其他题名	Monitoring forage harvesting area in semi-arid pasture based on Landsat TM images
	唐欢 1; 高娃 2; 徐丽君 1; 闫瑞瑞 1; 陈宝瑞 1; 辛晓平 1
来源期刊	农业工程学报
ISSN	1002-6819
出版年	2015
卷号	31 期号:23 页码:160-167
中文摘要	天然打草场是中国草地畜牧业的物质基础,也是中国内陆的生态屏障。目前中国打草场分布状况、分布面积、产量高低等信息十分缺乏,严重制约饲草储备和救灾应急功能发挥。为解决这些问题,该文基于2009-2011年的Landsat TM5影像数据,并借助野外调查点和目视解译方法对中国半干旱牧区天然打草场状况进行监测分析。结果表明,中国半干旱牧区天然打草场面积达800.35万hm~2,目视解译结果的平均解译精度达到76.78%。其中,内蒙古天然打草场面积居首位,面积为688.04万hm~2,其次是松嫩平原草原区,打草场面积为91.80万hm~2,河北半干旱农牧交错区的打草场面积最小,为20.51万hm~2。在内蒙古,呼伦贝尔草甸草原天然打草场约为180.89万hm~2,科尔沁沙化草原天然打草场约为96.44万hm~2,锡林郭勒典型草原天然打草场面积约为395.40万hm~2。研究区天然打草场的植被类型以温性草原类、温性草甸类、低地草甸类为主,少量分布在山地草甸类和温性荒漠草原类。该研究结果可为进一步分析全国半干旱区域打草场变化提供数据支撑。
英文摘要	Mowing grass for livestock utilization is one of the most traditional way of using natural grassland in the semi-arid pastoral areas. Managing cuttings in pasture not only warrant material for grassland livestock husbandry and but also can sustain the grassland as the ecological barrier of Chinese inland ecosystems. The natural grassland in those regions plays an important role in livestock rearing, wind break, sand stabilization, soil and water conservation, air purification, climate regulation and so on. However, the information about the spatial distribution, the productivity fluctuation and degradation status of harvesting forages in natural pastures in China is limited, which seriously threatens forage grassland reserves and emergency relief in China. As such, a systematic study on forage harvesting in natural pasture is necessary and important. In this study, the resource inventory of forage harvesting pasture in semi-arid pastoral areas of north China was carried out in order to understand the status of forage harvesting pastures for their spatial distribution and resource profiles. After a field investigation conducted in 2013 and 2014 (the investigation time was at the end of July to the beginning of September) in areas including Inner Mongolia Autonomous Region, Heilongjiang, Jilin and Hebei province, we recorded the location each survey area, grassland types, dominant species, the height, density, coverage of the natural grassland, and consulted the mowing time of forage harvesting pasture in the local grass court. In addition, the Landsat TM5 remotely sensed images which spatial resolution was 30 meters and has seven spectral channels, were used as the data source (a total of 256 images) after being geometrically corrected, projection transformation, format conversion and false color composite of band 4, 3 and 2. First, the indoor pre judgment was used to the images to determine the field survey area. Then establishment of interpretation was processed by combining the spectral features of TM images and the field survey points. Finally, we used information compound method in visual interpretation to achieve the area of pasture under forage harvesting in semi-arid pastoral areas in north China. Then classification accuracy evaluation was carried out. The results showed that the area of forage harvesting pasture in the semi-arid regions was 8.0035 million hm~2 which accounted for 2.85% of the grassland area in the northern China, with an average of interpretation accuracy of 76.78% and the average of the Kappa coefficient of 0.54. Among them, the largest area of forage harvesting pasture appeared in Inner Mongolia, reached 6.8804 million hm~2, followed by Heilongjiang Province of 0.6703 million hm~2, Jilin Province of 0.2477 million hm~2 and Hebei Province of 0.2050 million hm~2. The forage harvesting pasture area of Hulunber meadow steppe, Horqin sandy grassland and Xilingol typical steppe were 1.8089 million hm~2, 0.9644 million hm~2 and 3.9540 million hm~2 respectively. Temperate steppe, temperate meadow steppe and lowland meadow were the main vegetation types harvested from those pastures, and a little distribution in the mountain meadow and temperate desert steppe. The results made up for the deficiency for the area of the domestic forage harvesting pasture data and provided data for analysis of forage harvesting pasture changes in the semi-arid pastoral areas of China.
中文关键词	遥感 ; 监测 ; 植被 ; 半干旱牧区 ; 打草场
英文关键词	remote sensing monitoring vegetation semi-arid pasture cutting pasture
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:5592516
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233057
作者单位	1.中国农业科学院农业资源与农业区划研究所, 北京 100081, 中国; 2.内蒙古草原勘测研究院, 呼和浩特, 内蒙古 010000, 中国
推荐引用方式 GB/T 7714	唐欢,高娃,徐丽君,等. 基于Landsat TM影像的半干旱牧区天然打草场面积的遥感监测[J],2015,31(23):160-167.
APA	唐欢,高娃,徐丽君,闫瑞瑞,陈宝瑞,&辛晓平.(2015).基于Landsat TM影像的半干旱牧区天然打草场面积的遥感监测.农业工程学报,31(23),160-167.
MLA	唐欢,et al."基于Landsat TM影像的半干旱牧区天然打草场面积的遥感监测".农业工程学报 31.23(2015):160-167.