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	Performance of Four Optical Methods in Estimating Leaf Area Index at Elementary Sampling Unit of Larix principis-rupprechtii Forests 期刊论文 OAI收割 FORESTS, 2020, 卷号: 11, 期号: 1, 页码: 28 作者: Zou, Jie; Zuo, Yong; Zhong, Peihong; Hou, Wei; Leng, Peng \| 收藏 \| 浏览/下载：31/0 \| 提交时间：2020/05/19 leaf area index clumping effects inversion model woody components correction method Larix-dominated forest plots optical method elementary sampling unit
	黄海桑沟湾水体及沉积物中微塑料污染特征研究期刊论文 OAI收割海洋环境科学, 2019, 卷号: 38, 期号: 2, 页码: 198-204 作者: 熊宽旭; 赵新月; 周倩; 付传城; 涂晨 \| 收藏 \| 浏览/下载：40/0 \| 提交时间：2020/06/17 桑沟湾微塑料潮滩丰度空间分布 Sanggou bay microplastics tidal flats abundance spatial distribution In recent years,research on microplastics pollution in the marine environment has been increasing,but studies on microplastics in water bodies and sediments of the bay under the influence of high-intensity human activities are still rarely reported. In this study,the pollution characteristics of microplastics in the wayer and sediments of Sanggou bay were investigated in December 2017,after the harvest of large-scale aquaculture,with the aim to study the effects of aquaculture activities and hydrodynamics on pollution characteristics and spatial distribution of microplastics in the bay. The results showed that the types of microplastics in the water and sediments of Sanggou bay were mainly fibers,fragments,films,foams and particles. The microplastic abundances in the water and sediments were 1.8 ~ 31.2 N/L,31.2 ~ 1246.8 N/kg,respectively. The average particle sizes of microplastics in water and sediments were 0.51 0.20 mm and 1.54 1.02 mm,respectively. The results of spatial distribution of microplastics in Sanggou bay showed that the high abundance area mainly appears in the inshore waters,and the abundance of microplastics tends to decrease from the inner areas of estuary to the outshore areas. The heterogeneity of microplastic abundance and spatial distribution in Sanggou bay is mainly affected by human activities such as aquaculture,living and shipping,as well as hydrodynamics. In the future,fine sampling and analysis are needed to fully understand the temporal and spatial distribution of microplastics pollution in the bay areas.
	Scale-dependent relationships between tree species richness and ecosystem function in forests 期刊论文 OAI收割 JOURNAL OF ECOLOGY, 2013, 卷号: 101, 期号: 5 作者: Chisholm, Ryan A.; Muller-Landau, Helene C.; Abdul Rahman, Kassim; Bebber, Daniel P.; Bin, Yue \| 收藏 \| 浏览/下载：88/0 \| 提交时间：2013/10/16 Biodiversity Biomass Complementarity Determinants Of Plant Community Diversity And Structure Productivity Sampling Effects Species Diversity Trees
	Scale-dependent relationships between tree species richness and ecosystem function in forests 期刊论文 OAI收割 JOURNAL OF ECOLOGY, 2013, 期号: 5 作者: Chisholm, Ryan A.; Muller-Landau, Helene C.; Abdul Rahman, Kassim; Bebber, Daniel P.; Bin, Yue 收藏 \| 浏览/下载：57/0 \| 提交时间：2016/12/05 biodiversity biomass complementarity determinants of plant community diversity and structure productivity sampling effects species diversity trees
	Scale-dependent relationships between tree species richness and ecosystem function in forests 期刊论文 OAI收割 Journal of Ecology, 2013, 卷号: 101, 期号: 5, 页码: 1214-1224 Ryan A. Chisholm; Helene C. Muller-Landau; ..... 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/09/04 biodiversity biomass complementarity determinants of plant community diversity and structure productivity sampling effects species diversity trees
	Scale-dependent relationships between tree species richness and ecosystem function in forests 期刊论文 OAI收割 JOURNAL OF ECOLOGY, 2013, 卷号: 101, 期号: 5 作者: Chisholm, Ryan A.; Muller-Landau, Helene C.; Abdul Rahman, Kassim; Bebber, Daniel P.; Bin, Yue \| 收藏 \| 浏览/下载：6/0 \| 提交时间：2023/04/25 biodiversity biomass complementarity determinants of plant community diversity and structure productivity sampling effects species diversity trees
	Analyse the angular velocity estimation errors of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者: Zhang Y. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter based on high sampling rate was established model and error characteristics were analyzed. With the hypothesis of constant acceleration -- filter and its angular velocity transfer function were deduced. Combing with optimum parameters the effects of and sample rate on the error characteristics were evaluated. According to the requirements of stabilization servo mechanism the frequency characteristics of angular velocity transfer function are analyzed and the filter parameters are designed. The experimental which filter tracked and smoothed sinusoidal signal the results show that when the cutoff frequency of angular velocity loop is 44.9rad/s sampling period and parameters are 0.08ms and 0.01279 respectively the phase leading of angular position is 70. -- filter tracked sinusoidal signals with maximum angular velocity(30/s) and maximum angular acceleration(30/s2) the error of angular velocity estimation was 0.053/s. In the engineering of electro-optical stabilization servo mechanism -- filter can reduce noise effectively and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.