森林植被

In recent years, there are many researches on phenology derivation from multi-temporal remote sensing data. But most of them focus on vegetation types like forests and grasslands.

近年来，开展了大量利用时序遥感数据提取植被物候的研究，但这些研究中提出的方法主要应用于森林或草地等植被类型。

For forest, grassland and river ecosystems, phreatophyte should be applied to, promoting the primary succession of the ecosystem. For farm and urban ecosystems, the main crops and pollution-resisting ornamental plants should be selected for the purpose of agricultural production, landscapes construction and bioremediation so as to control the speed and direction of secondary succession of these ecosystems.

对于森林、草地、江河等自然生态系统，植被选择应以原生种类为主，以促进生态系统进行原生演替；而农田、城市绿地生态系统，植被恢复应以生产生活、景观营造、生物修复为目的，宜选择当地主要优势农作物、观赏性好、抗污染的植物，以控制生态系统次生演替的方向和速度。

The results indicated:During the course of vegetation natural recovery, there are different stage of secondary sere at different degree of degraded lands, that is secondary herbosa; secondary scrub; masson pine coniferous forest; conifer and broad-leaved mixed forest; every green broad-leaved forest.

本项研究从比较生态学入手，分析了千岛湖地区退化森林生态系统不同植被恢复措施，即：自然恢复、人工促进自然恢复和人工恢复措施下的群落生态变化，比较了不同措施之间的生态响应差异，研究结果表明：①在植被自然恢复过程中，由于生态系统退化程度的不同，存在草灌丛、灌丛、马尾松林、混交林和常绿阔叶林整个演替序列。

Also, during this process, the water content in vegetation increases and keeps stable gradually, and the water environment in ecosystem will become suavely.

摘 要：本文以南亚热带常绿阔叶林为基本，同时探讨了热带南亚热带森林演替系列中8种生态系统类型的水分结构，发现植被水分结构的恢复与土壤水分结构的恢复是不同步的，50a以上没有受扰动的土壤，其土壤水分结构在时空上才趋于稳定；植被水分结构的时空稳定性基本上与生态系统的演替状况一致；为满足植被蒸腾的需要，植被中水分的月更新次数随着群落向顶极系统的演替而逐渐减少。

The article is primarily focused on the flora of subaerial algae of zonal vegetation in terrestrical ecosystem of NECT、subaerial algae's distribution regularity and the aspect both the natural and artificial disturbance which affect it's distribution.

本文着重研究了中国东北森林—草原样带中陆地生态系统中的各地带性植被内亚气生藻类的种类组成、亚气生藻类在各地带性植被内的分布规律及影响亚气生藻类分布的一些自然因素，同时也研究了某些人为干扰对亚气生藻类分布产生的影响。

Previous vegetation investigation in Dinghushan 20ha permanent plot which was established at 2005, suggested that Castanopsis chinensis is the most important species in plot.

在2005年建立的鼎湖山20ha大样地植被调查研究中表明，样地内锥栗在样地植被中的重要值最大，是该地区森林群落构成的主要成分，其分布格局的变化可能直接影响到整个群落的格局演化。

These pollen maps show significant vegetation changes during the past 10 000 years in the current forest regions of Northeast China, with the early Holocene characterized by the widely distributed Birch, the mid-Holocene by the development of temperate deciduous forest mainly consisting of Quercus and Ulmus, and the late Holocene by the marked increase in Pinus abun dance and the development of temperate mixed conifer and deciduous forest.

花粉图展示了东北地区植被演化的主要特征。桦树在全新世初期遍布从三江平原到辽东半岛南端的东北东部地区，在森林中占据绝对优势地位；榆属和栎属等阔叶乔木在早中全新世的大部分时间内是东部森林中的主要种类；在大约5kaBP以后，松属在东北现在的森林地区开始增加，云、冷杉属也表现出较明显扩大，中北部地区的森林覆盖度可能比原来增大了。

But at the same time,itexisted in the fact that the water environment was amended,showingthat many lakes and ponds such as Hong Jiannuo Lake appearing andexpanding in the end of Qing dynasty.4.The vegetation in Mu Su Desert passed through several phases inhistorical times,the main phases are:the species composition ofvegetation community was gradually simplified;xeromorphous and sandyplant increased;the status of desert vegetation rose evidently.However,the change of vegetation zonation means that forest plainchanged into drought plain did not occur.5.The main modality of Mu Su Desert land degenerating has beendesertification,it had occurred before human activities intervenedintensively.Two-thirds of land has been desertification at variousdegrees.

但与此同时，也存在着局部的水环境改善，突出表现为红碱淖等湖沼在清末民初的出现和扩大。4、毛乌素沙地的植被在历史时期经历了群落种类组成渐趋简单、旱生沙生资源植物增加、荒漠植被地位明显上升等变化，但是并不存在由森林草原到干草原的地带性植被变化。5、沙漠化是毛乌素沙地土地退化的主要表现形式，在人类活动强烈干预以前就存在着，秦汉以来，有大约2／3的土地发生了程度不同的沙漠化。

In other words, underground water is an essential water resource, accounting for 41%-83% of the total. Meanwhile, the formation of limestone soil is slower.(2) Guangxi is a typical karst region. A large difference is noticed in vegetation coverage between karst regions and non-karst regions. The average coverage of bush and forest communities is 14.81% and 12.13% in the karst regions, 1.92% and 31.3% in the non-karst regions.(3) The wide distribution of rocky desertification in Guizhou Province indicates the karst environment is strongly affected by carbonate rocks'properties.

水资源以地下水资源为主，且难开发；土壤资源零星分散，土层薄，易流失；(2)现存广西区植被覆盖特征显示，岩溶石山区森林覆盖率明显低于非岩溶区，同时也暗示着岩溶石山区植被的恢复、演化慢于非岩溶区植被；(3)贵州石漠化分布特征表明岩性对岩溶生态环境的制约；(4)脆弱的岩溶生态环境制约着生态系统的人口承载力。

Meanwhile, the paper also quantitatively studied the response mode of the soil moisture, crop, trees and grass under climate change conditions with the statistical and numerical models.

本研究选择黄淮海流域、新疆、小兴安岭和内蒙古锡林浩特分别作为农田、森林、草原典型生态研究区，利用较长时间序列的气候资料、遥感数据及其他辅助资料，运用趋势、相关、EOF、突变检验、小波分析及数值模拟等多种方法，在分析研究不同生态研究区气候变化区域特征的基础上，较为系统全面地开展了我国北方典型生态区气候变化对农田生态、森林生态和草原生态典型和敏感生态环境指标的影响研究，包括气候变化对农田土壤水分、农作物发育期和产量的影响；气候变化木本植物和鸟类物候的影响；气候变化对植被NDVI、林木生产力和森林生态环境质量的影响；气候变化对草原土壤水分和牧草产量的影响，同时，通过统计模型和数值模型定量研究了气候变化背景下的土壤水分、作物、林木和牧草响应模式。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失