Other positive climate feedbacks that operate in the Arctic include the thawing of permafrost and vegetation changes.
在北极发生的其它气候正反馈还包括永久冻土融化和植被变化。
Precipitation and vegetation changes are two key factors that have significant impacts on hydrological characteristics.
降雨与植被变化是对流域水文特征有着深刻影响的两大因素。
The University of Arizona is also studying the hydrological effects of desert vegetation changes, and the rainforest dynamics of carbon, oxygen and vegetation in a variable-climate setting.
亚利桑那大学也在研究沙漠植物变化的水文效应、碳氧的雨林动态和可变气候环境中的植物。
The climatic changes in southwestern Asia were more subtle, in that they involved shifts in mountain snow lines, rainfall patterns, and vegetation cover.
亚洲西南部的气候变化更为微妙，因为它们涉及到山地雪线、降雨模式和植被覆盖率的变化。
Some warming is certain, but the degree will be determined by cycles involving melting ice, the oceans, water vapour, clouds and changes to vegetation and plants.
一定程度的气候变暖是确定无疑的，但其程度将由冰的融化、海洋、水蒸气、云和植物的变化等循环过程所决定。
The discrepancy can be explained by long term changes in vegetation and ice cover.
植被和冰层覆盖的长期变化能够说明这种差异。
He said more research was needed to understand the knock-on effects for creatures from the changes in vegetation inadvertently caused by emissions from cars, industry and farms.
他说需要更多的研究来理解汽车、工业及农业的无意排放造成的植物变化对生物的间接影响。
Though it is di? Cult to grow trees in the saline-alkali soil, the ground cover and wetland vegetation are rich and vary in response to subtle changes in the water table and PH values.
尽管难以在盐碱地里栽种树木，但覆盖地表和湿地的植被异常丰富，随着地下水位和PH值的细微变化而呈现不同的形态。
Vegetation patterns were also observed to be shifting due to the changes in seasonal weather patterns, and this leads to increased difficulty in subsistence activities.
由于季节气候类型的改变，土著人发现当地的植被类型也在发生着变化，这一现象导致本已困难的谋生之道雪上加霜。
We had crossed a continent and through dusty Windows, we'd seen gradual changes in climate, vegetation, topography and architecture.
我们已经穿越了大陆，透过灰蒙蒙的车窗，我们见证了渐变的天气、植被、地貌和建筑。
We concluded that plant life-form function groups were unsuitable as the key plant function types to evaluate and forecast the changes of region vegetation.
认为植物生活型功能群不宜作为评估和预测本研究区域植被变化的关键植物功能型。
These fossil data indicate the changes in regional vegetation in response to climate variations and Marine transgressions and regressions.
这些孢粉化石资料说明区域性植被响应气候演变、海进、海退等所发生的变化。
The change of vegetation coverage indicates the changes of global and regional entironment.
植被覆盖及其变化是全球和区域生态环境变化的重要指示。
Desert ecosystem takes on sparse vegetation and small biomass, changes with climate factors especially sensitive in precipitation, and it is particularly important for its conservation.
表明荒漠生态系统植被稀疏，生物量小，对气候因子，特别是降水变化敏感，对其保育显得尤为重要。
The influence of fire on water is indirectly manifested in that the post fire changes of vegetation, ground cover, soil and environment affect water cycle, water quality and aquatic lives.
火对水分的影响间接地表现在火后植被，地被物、土壤和环境的变化会影响水分循环、水质和水生生物。
The roof material was selected to reflect the colour of the soil particular to this site and the seasonal changes in vegetation.
小屋的屋顶材料体现了该平原的土地颜色，同时也能够随着植被的颜色进行季节性变换。
In this paper, the impacts of climate changes on karst ecosystem were studied from the aspects of vegetation and hydrologic regimes and water resource, taking karst areas in Chongqing as an example.
本文以重庆岩溶区为研究对象，从植被和水文水资源两个方面分析了气候变化对岩溶生态系统的影响。
In this paper, vegetation dynamic changes in Chengdu City was analyzed by making use of TM images in 1987 and 2000.
利用1987年和2000年的TM影像，对成都市区植被动态变化进行了分析。
Due to the climate changes and effects of human activities, the nature vegetation of the loess plateau has been destroyed and the boundaries of grasslands moved southward.
受气候的变化和人类活动的影响，黄土高原的天然植被受到破坏，草原界线南移。
The study vegetation types transition, and plant domestication introduction of ecosystem changes have important value and significance.
对研究植被类型过渡，动、植物引种驯化，生态系统的变化具有重要的价值和意义。
The use of modern phytolith assemblages for the interpretation of fossil phytoliths shows phytolith analysis is an effective method for understanding the grassland vegetation and climate changes.
运用地层中植硅体组合解释过去草原植被及气候变化的关键之一，是要了解研究区现代植硅体形态及表土植硅体组合与现代植被的关系。
In the aspect scale, the changes of vegetation coverage had less effects on the changes of soil erosion intensity.
在坡向尺度上，植被覆盖度与土壤侵蚀强度之间的变化规律不明显。
And then third, together these changes shifted vegetation zones southward toward areas of more rainfall, " he said."
然后第三，这些变化使植被区转移到向南降雨量较多的地区。”他说道。
With the increase of enclosing time, plant community characters changed, soil properties also changed accordingly, but the changes were not significant like that of vegetation.
随着围栏时间的增加，植物群落特征发生了变化，土壤的理化性状也相应地发生了一定的变化，但不如植被变化明显。
The relation of wind velocity and total amount of sand transport also changes with vegetation coverage: On shifting sandy land, wind velocity has a cubic function to the sand transport;
随着植被盖度的变化，风速与输沙率的关系也发生变化：流动沙地上风速与输沙率呈三次函数关系；
The relation of wind velocity and total amount of sand transport also changes with vegetation coverage: On shifting sandy land, wind velocity has a cubic function to the sand transport;
随着植被盖度的变化，风速与输沙率的关系也发生变化：流动沙地上风速与输沙率呈三次函数关系；
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