干旱区生态环境知识资源中心(Arid): 黑河上游天涝池流域灌丛地上生物量空间分布

Arid

	黑河上游天涝池流域灌丛地上生物量空间分布
其他题名	The spatial distribution of the aboveground biomass shrub in Tianlaochi catchment in the upper reaches of Heihe River
	李文娟; 赵传燕; 彭守璋; 王清涛; 马文瑛; 袁亚鹏; 高婵婵
来源期刊	生态学报
ISSN	1000-0933
出版年	2015
卷号	35 期号:4 页码:1134-1141
中文摘要	祁连山自然保护区是河西地区重要的水源涵养区,而灌丛作为祁连山主要植被类型之一,对该区水源涵养功能具有举足轻重的作用。以黑河上游天涝池流域灌丛为研究对象,基于野外调查结合研究区机载LiDAR(Light Detection And Ranging)数据和Geoeye-1影像,研究灌丛地上生物量的空间分布。结果表明:样方生物量与易测因子(平均丛高和样方盖度)呈幂函数关系;机载LIDAR数据能够较精确地反演灌丛平均高度以及样方盖度;利用其反演数据获得研究区灌丛地上总生物量为141 t;单位面积最大地上生物量为691.8 g/m~2;在海拔3300-3400 m高度带灌丛地上生物量最大,为40. 4 t;在海拔2655-3300 m高度带,随着海拔的升高灌丛地上总生物量在增加;在海拔3400-3750 m高度带,随着海拔的升高而灌丛地上总生物量逐渐减少。
英文摘要	Qilian Mountain is water source areas of Heihe River, Shiyang River and Shule River. The Heihe River as the second longest inland river in China has been paid more attention due to its eco-environmental problems. These problems include the continuous decrease in the discharge water of the Heihe River,desertification,salinization,and the increase of sand storms. Therefore, a series of conservation programs have been conducted for ecological environmental restoration in Qilian Mountain,especially in the upper reaches of Heihe River. To protect ecological environment of the upper reaches the natural reserve of Qilian Mountain has been established in 1989, Which plays a significant duty on conservation of natural vegetation. The shrub plays an important role in conservation water. The characteristics of the community are less studied. We selected Tianlaochi catchment in the upper reaches of Heihe River as study area and took the four typical alpine shrubs (Dasiphora fruticosa, Caragana jubata, Salix atrata and Spiraea alpine) as the study objects. We estimated aboveground biomass by remote sensing data combining with measurements. First, investigation was carried out in August of 2011 and 2012. We measured the shrub coverage, the height and biomass in many sampling points. According to the observed data, the relationship between biomass and coverage and height was built. Second, we collected remote sensing, such as airborne LiDAR(Light Detection And Ranging) and high-resolution remote sensing image (Geoeye-1). The LiDAR data was used to obtain the spatial distribution of shrub height. Geoeye-1 data was used to retrieve the spatial distrobution of shrub coverage. Third, we calculated the spatial distribution of shrub aboveground biomass by the relationship and the spatial distribution of shrub height and coverage in Arclnfo. The results show that the relationship between the aboveground biomass and shrub height and coverage is a power function. The spatial distribution of aboveground biomass has great differences. The total aboveground shrub biomass is 141 t in study area; the maximum aboveground biomass unit area is 691.8 g/m~2. The higher aboveground biomass appears the zone with elevation ranging from 3300 to 3400 meters, which is the optimal habitat for shrub growth,the total aboveground biomass is 40. 4 t in the zone. The aboveground biomass of shrub increases with the increase of elevation from 2655 to 3300 meters,nevertheless, it decreases with an increase of elevation from 3400 to 3750 meters. The variation of the aboveground biomass with elevation results from the combination of precipitation and temperature. Precipitation increases with the increase of elevation. Instead, temperature decreases with the increase of elevation. Form the study, we can draw some conclusions that the method to estimate shrub aboveground biomass is good way, it is useful to obtain higher accuracy carbon storage of shrub. In addition, two structure characteristics of shrub (i.e., height and coverage) can be used as important input information for hydrological spatial simulation in the subsequent researches.
中文关键词	灌丛 ; 地上生物量 ; 黑河上游 ; 空间分布 ; 机载激光雷达
英文关键词	shrub aboveground biomass the upper reaches of Heihe River spatial distribution airborne LiDAR
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:5367472
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233151
作者单位	兰州大学生命科学学院, 草地农业生态系统国家重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	李文娟,赵传燕,彭守璋,等. 黑河上游天涝池流域灌丛地上生物量空间分布[J]. 兰州大学,2015,35(4):1134-1141.
APA	李文娟.,赵传燕.,彭守璋.,王清涛.,马文瑛.,...&高婵婵.(2015).黑河上游天涝池流域灌丛地上生物量空间分布.生态学报,35(4),1134-1141.
MLA	李文娟,et al."黑河上游天涝池流域灌丛地上生物量空间分布".生态学报 35.4(2015):1134-1141.