中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共4条，第1-4条

帮助

条数/页：排序方式：
	Comparative study of multiple heat indices in revisiting summer heat across China based on meteorological observations 期刊论文 OAI收割 PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT, 2021, 页码: 19 作者: Feng, Yao; Wang, Hong; Liu, Wenbin; Sun, Fubao; Cui, Huijuan \| 收藏 \| 浏览/下载：33/0 \| 提交时间：2022/09/21 Heat intensity heat day individual indices composite indices meteorological observations China
	Comparative study of multiple heat indices in revisiting summer heat across China based on meteorological observations 期刊论文 OAI收割 PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT, 2021, 页码: 19 作者: Feng, Yao; Wang, Hong; Liu, Wenbin; Sun, Fubao; Cui, Huijuan \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2022/09/21 Heat intensity heat day individual indices composite indices meteorological observations China
	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 \| 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.
	Broad-Band Spectral Indices Variability of BL Lacertae by Wavelet Method 期刊论文 OAI收割 JOURNAL OF ASTROPHYSICS AND ASTRONOMY, 2014, 卷号: 35, 期号: 3, 页码: 489-493 作者: Zhang HJ(张皓晶); Bai JM(白金明); Bao, YY; Zhang, X 收藏 \| 浏览/下载：23/0 \| 提交时间：2016/04/08 Galaxies: BL Lacertae objects individual: BL Lacertae: broad-band spectral indices periodic variation methods: numerical: wavelet analysis