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| 1 | Distribution of plant species and species-soil relationship in the east central Gurbantunggut Desert, China显示文摘在在东方的种类和土壤因素之间的植物种类和关系的分发 Gurbantunggut 沙漠的中央部分被学习提供更多的卓见进植物群并且越过沙漠的各种各样的部分在植被决定差别。双向簇分析证明在区域的植被能被划分成三个组,第一个组被灌木种类, Ephedra przewalskii 和草种类统治,主要在扁平的根据和轻轻的斜坡的区域的 Carex physodes;第二个组被 C 统治。physodes, Artemisia songorica 和 A。主要沙沙丘和第三个组的斜坡上的 xerophytica 被灌木种类统治,主要沙沙丘的顶上的 Haloxylon persicum。在植物密度在之间没有差别组织 1 和 2,但是在组 3 有重要减少。不到植被组 3 的土壤水比在其它,二个组根本玷污深度的低得多。EC,有机物,全部的 P 和可溶的 Na, Ca 和 Mg 与土壤水很同样变化了。正规通讯分析(CCA ) 令人满意地在区域估计了种类土壤关系。植物种类的分发强烈与水内容,有机物, EC 和营养素的土壤因素被相关。在三把 CCA 斧子解释的种类出现的变化是大约 70% ,显示一些解释地点变量可以在我们的学习参数外面存在。土壤质地被建议在未来研究被包括改进 CCA 的解释。 | AN Ping LI Xiangjun ZHENG Yuanrun ENEJI A. Egrinya QIMAN Yunus ZHENG Mingqing INANAGA Shinobu | 2015 | Journal of Geographical Sciences2015,25,1: | 11 |
| 2 | 祁连山乌鞘岭地区植被组成与分布特征研究显示文摘植被组成是区域生态系统的重要组成成分,对区域生态功能的发挥起着重要作用。为探究乌鞘岭地区植被组成与分布特征,在甘肃省祁连山东段乌鞘岭地区设置37个采样点开展实地考察,研究区域植被清单、植物频度、平均多优度及区域植被层盖度,探讨了植被与土地利用情况间的联系。结果表明:1)研究区域内植物共有25科42属48种,草本植物以早熟禾(Poa annua L.)为优势物种;灌木以金露梅(Potentilla fruticose L.)为优势物种;乔木以青海云杉(Picea crassifotia Kom)为优势物种。2)植物多样性主要受到海拔和人类活动影响,海拔2 700~2 750 m地带的山区植物种类数最多,山区受到人类活动影响较小,植物物种丰富;河谷及低海拔平坦地带人类种植及放牧活动多,植物种类较少。3)植被总盖度与地形及人类活动关联性大,海拔较低的河谷及草原植被盖度低,海拔较高的山区植被总盖度较高。 | 李坤鹏 胡辉 罗超 强平 邓媛 | 2020 | 环境生态学2020,2,1: | 4 |
| 3 | Identifying Scale-location Specific Control on Vegetation Distribution in Mountain-hill Region显示文摘The scale-location specific control on vegetation distribution was investigated through continuous wavelet transforms approaches in subtropical mountain-hill region, Fujian, China. The Normalized Difference Vegetation Index (NDVI) was calculated as an indicator of vegetation greenness using Chinese Environmental Disaster Reduction Satellite images along latitudinal and longitudinal transects. Four scales of variations were identified from the local wavelet spectrum of NDVI, with much stronger wavelet variances observed at larger scales. The characteristic scale of vegetation distribution within mountainous and hilly regions in Southeast China was around 20 km. Significantly strong wavelet coherency was generally examined in regions with very diverse topography, typically characterized as small mountains and hills fractured by rivers and residents. The continuous wavelet based approaches provided valuable insight on the hierarchical structure and its corresponding characteristic scales of ecosystems, which might be applied in defining proper levels in multilevel models and optimal bandwidths in Geographically Weighted Regression. | QIU Bing-wen ZENG Can-ying TANG Zheng-hong LI Wei-jiao Aaron HIRSH | 2013 | Journal of Mountain Science2013,10,4: | 3 |
| 4 | 地形位指数模型改进及其在植被覆盖评价中的应用显示文摘地形作为影响植被覆盖的重要因素,对植被恢复评价以及生态修复规划意义重大。地形位作为测度地形因子综合效应的指标,具有单一地形因子难以比拟的优势。然而,现有地形位指数算法以整个研究区为参照,未考虑空间异质性,难以反映植被生长的局部环境特征。基于地理学第三定律对地理环境相似的强调,融合“空间位置邻近”和“环境特征相似”,对传统地形位模型进行改进:①引入局部窗口算法,以突出局部地形特征;②在不同生境因子组合下测算地形位指数,以排除环境差异对地形位作用的干扰。案例研究表明,新模型有效提升了地形位指数对植被覆盖水平的解释力度;当考虑生境因子组合,且采用最优窗口时,局部窗口地形位指数与植被覆盖度之间的相关性最高。此外,通过观察不同生境组合下的地形位指数发现,在高热少水阴坡和高热少水阳坡条件下,植被覆盖度与局部窗口地形位指数具有更高相关性;可见,越是水资源相对匮乏区域,植被覆盖对局部窗口地形位的响应越敏感。本文有望为植被恢复评价与规划提供新的指标。 | 张玉 张道军 | 2022 | 地理学报2022,77,11: | 3 |
| 5 | 闽赣自然植被覆盖格局及其驱动机制分析显示文摘自然植被覆盖格局的研究对生态环境可持续发展具有十分重要的意义。以福建和江西2省为研究区,基于30 m分辨率的植被指数数据,运用地理加权回归模型,结合自然环境和人类活动因素,探索分析闽赣地区自然植被覆盖格局特征及其驱动机制。研究表明:1地形是影响闽赣自然植被覆盖程度的主要因素,江西和福建2省自然植被覆盖程度分别在高程[100,300)m和[300,500)m区间,与高程相关性最大;在坡度25°和10°以上,与坡度的相关性减弱。2江西主干河流附近农田和城镇交错,福建主干河流附近城镇和林地嵌套,2省自然植被覆盖程度与距河流距离的相关性差异显著。3距离城镇居民点5 km和4 km分别为江西和福建2省自然植被覆盖程度与距居民点距离相关性最弱处。 | 齐文 邱炳文 范占领 | 2016 | 长江科学院院报2016,33,12: | 3 |
| 6 | 江西省陆地植被空间格局特点及影响因素显示文摘为了探求江西省不同地貌特征下的植被空间格局特点及其与影响因素的相互关系,该文以EVImax作为植被覆盖程度指示因子,建立了其与相关影响因子的地理加权回归模型(GWR)。研究表明:(1)在平原区植被主要受到高程的影响,随着高程的升高,形成了湖泊-耕地-河流-居民点-耕地-林混耕地的格局。且在居民点间形成了村落-工业区-城镇的小格局。(2)在丘陵区首先受到坡度因子的影响,形成了盆地(谷地)和山地两大格局,在河流和高程等因子的影响下,整体形成了河流-城镇-耕地-河流-耕地-林混耕地-林地的格局。(3)在山地区,在河流和高程因子共同影响下,形成了河流-城镇-村落(耕地)-林混耕地-林地格局。 | 范占领 邱炳文 曾灿英 | 2015 | 遥感信息2015,30,5: | 0 |
| 7 | Multilevel Assessment of Spatiotemporal Variability of Vegetation in Subtropical Mountain-hill Region显示文摘The complex spatiotemporal vegetation variability in the subtropical mountain-hill region was investigated through a multi-level modeling framework. Three levels- parcel, landscape, and river basin levels- were selected to discover the complex spatiotemporal vegetation variability induced by climatic, geomorphic and anthropogenic processes at different levels. The wavelet transform method was adopted to construct the annual maximum Enhanced Vegetation Index and the amplitude of the annual phenological cycle based on the 16-day time series of250m Moderate Resolution Imaging Spectroradiometer Enhanced Vegetation Index datasets during 2001-2010. Results revealed that land use strongly influenced the overall vegetation greenness and magnitude of phenological cycles.Topographic variables also contributed considerably to the models, reflecting the positive influence from altitude and slope. Additionally, climate factors played an important role: precipitation had a considerable positive association with the vegetation greenness, whereas the temperature difference had strong positive influence on the magnitude of vegetation phenology. The multilevel approach leads to a better understanding of the complex interaction of the hierarchical ecosystem, human activities and climate change. | QIU Bing-wen ZENG Can-ying TANG Zheng-hong | 2013 | Journal of Mountain Science2013,10,6: | 0 |