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UAV-based individual shrub aboveground biomass estimation calibrated against terrestrial LiDAR in a shrub-encroached grassland 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION, 2021, 卷号: 101, 页码: 12
作者: Zhao, Yujin; Liu, Xiaoliang; Wang, Yang; Zheng, Zhaoju; Zheng, Shuxia

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收藏 | 浏览/下载：47/0 | 提交时间：2021/08/19

Shrub encroachment Biomass Unmanned aerial vehicle (UAV) Terrestrial laser scanning Volume Individual shrub identification

UAV-based individual shrub aboveground biomass estimation calibrated against terrestrial LiDAR in a shrub-encroached grassland 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION, 2021, 卷号: 101
作者: Zhao, Yujin; Liu, Xiaoliang; Wang, Yang; Zheng, Zhaoju; Zheng, Shuxia

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收藏 | 浏览/下载：33/0 | 提交时间：2023/02/24

Shrub encroachment Biomass Unmanned aerial vehicle (UAV) Terrestrial laser scanning Volume Individual shrub identification

烟台牟平海洋牧场季节性低氧对大型底栖动物群落的生态效应 期刊论文 OAI收割
生物多样性, 2019, 卷号: 27, 期号: 2, 页码: 200-210
作者: 李宝泉

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收藏 | 浏览/下载：21/0 | 提交时间：2020/06/17

低氧群落结构群落恢复敏感种机会种 hypoxia community structure community recovery sensitive species opportunistic species Hypoxia is a common phenomenon in the world's oceans, especially in the shallow waters of coastal zones. Rates of hypoxia are increasing due to global climatic changes and anthropogenic activities. Hypoxia can cause mass mortality of marine animals and can have severe negative impacts on marine ecosystems. To better understand the effects of hypoxia on macrobenthic communities, a survey was carried out in the Muping Marine Ranch (Yantai) during June, August and September of 2016. Results showed that seasonal hypoxia led to changes in benthic community structure, especially in terms of species composition and dominant species. The dominant species were Polychaeta Lumbrinereis latreilli, Sternaspis scutata and Mollusca Endopleura lubrica in summer. The opportunistic species Lumbrinereis latreilli increased, whereas, sensitive species such as Leptomya minuta, Glycera chirori, Upogebia major, Pontocrates altamarimus, Eriopisella sechellensis decreased during the hypoxic period of August. Hypoxia also reduced biodiversity indices. The effect of hypoxia on abundance and biomass were not significant, mainly because of the increase in the opportunistic Lumbrinereis latreilli, which counteracted the decline in abundance and biomass of other species. Individual physiological tolerance to hypoxia was different among species. Lumbrinereis latreilli showed higher tolerance to hypoxia in dissolved oxygen (DO) = 1.0 mg/L compared to other species. Some sensitive species, such as Leptomya minuta, Upogebia major, Pontocrates altamarimus and Eriopisella sechellensis showed lower tolerance when DO < 2.5 mg/L. When DO increased to 2.5 mg/L, the macrobenthic community start to recover gradually. The recovery extent and time needed were closely related to the degree of seasonal hypoxia.

Estimating woody aboveground biomass in an area of agroforestry using airborne light detection and ranging and compact airborne spectrographic imager hyperspectral data: individual tree analysis incorporating tree species information 期刊论文 OAI收割
JOURNAL OF APPLIED REMOTE SENSING, 2016, 卷号: 10, 页码: 20
作者: Wang, Zhihui; Liu, Liangyun; Peng, Dailiang; Liu, Xinjie; Zhang, Su

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收藏 | 浏览/下载：22/0 | 提交时间：2019/09/26

agroforestry woody aboveground biomass individual tree analysis light detection and ranging tree species

Estimating woody aboveground biomass in an area of agroforestry using airborne light detection and ranging and compact airborne spectrographic imager hyperspectral data: individual tree analysis incorporating tree species information 期刊论文 OAI收割
JOURNAL OF APPLIED REMOTE SENSING, 2016, 卷号: 10, 页码: 20
作者: Wang, Zhihui; Liu, Liangyun; Peng, Dailiang; Liu, Xinjie; Zhang, Su

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收藏 | 浏览/下载：13/0 | 提交时间：2019/09/26

agroforestry woody aboveground biomass individual tree analysis light detection and ranging tree species

Estimating woody aboveground biomass in an area of agroforestry using airborne light detection and ranging and compact airborne spectrographic imager hyperspectral data: individual tree analysis incorporating tree species information 期刊论文 OAI收割
JOURNAL OF APPLIED REMOTE SENSING, 2016, 卷号: 10, 页码: 20
作者: Wang, Zhihui; Liu, Liangyun; Peng, Dailiang; Liu, Xinjie; Zhang, Su

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收藏 | 浏览/下载：22/0 | 提交时间：2019/09/26

agroforestry woody aboveground biomass individual tree analysis light detection and ranging tree species

Airborne Lidar-derived volume metrics for aboveground biomass estimation: A comparative assessment for conifer stands 期刊论文 OAI收割
AGRICULTURAL AND FOREST METEOROLOGY, 2014, 卷号: 198, 页码: 24-32
作者: Tao, Shengli; Guo, Qinghua; Li, Le; Xue, Baolin; Kelly, Maggi

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收藏 | 浏览/下载：14/0 | 提交时间：2023/03/30

Lidar Aboveground biomass Crown volume Individual tree segmentation

青藏高原东部植物生态特征在季节性雪厚度梯度上的变化 学位论文 OAI收割
博士, 2009
陈文年

收藏 | 浏览/下载：47/0 | 提交时间：2011/05/09

融雪梯度冻融交替物候个体生长繁殖特征种群分布格局种间联结性群落多样性性群落生物量青藏高原东部 snowmelt gradient phenology individual growth reproductive characters population distribution pattern species diversity community biomass eastern Tibetan Plateau

The role of biomass allocation strategy in diversity loss due to fertilization 期刊论文 OAI收割
BASIC AND APPLIED ECOLOGY, 2008, 卷号: 9, 期号: 5, 页码: 485-493
Niu, KC; Luo, YJ; Choler, P; Du, GZ

收藏 | 浏览/下载：18/0 | 提交时间：2012/07/04

individual biomass reproductive allocation functional trait species relative abundance interspecific competition alpine meadow Tibetan Plateau

On the Balance between Niche and Neutral Processes as Drivers of Community Structure along a Successional Gradient: Insights from Alpine and Sub-alpine Meadow Communities 期刊论文 OAI收割
ANNALS OF BOTANY, 2007, 卷号: 100, 期号: 4, 页码: 807-812
Chu, CJ; Wang, YS; Du, GZ; Maestre, FT; Luo, YJ; Wang, G

收藏 | 浏览/下载：34/0 | 提交时间：2012/07/12

average individual biomass niche neutral theory seed mass successional gradient meadow