watershed characteristics 中文意思是什麼
-
Through the analyses of characteristics of gully thalweg and soil erosion in upland and gully land, sediment sources in small watershed, sediment yield relationship between upland and gully and ecological functions of vegetation corridor, it is considered that vegetation corridor combined with land preparation measures may block runoff and sediment from upland and reduce the amount of soil erosion in a watershed by 54. 5 % ~ 77. 0 %
摘要在分析黃土高原地區的溝沿線、溝沿線上下溝間地和溝谷地土壤侵蝕特徵、小流域泥沙來源、坡溝侵蝕產沙關系的基礎上，結合廊道的生態功能和以往的研究結果，認為在溝沿線的上部建立草灌與整地工程措施相結合的植物廊道，來攔蓄阻截溝間地的來水來沙，可使流域的土壤侵蝕量減少54 . 5 % ~ 77 . 0 % 。 -
A comparison of transpiration characteristics between hippophae rhamnoides l. ssp sinensis rousi and hippophae ranmnoides in huangfuchuan watershed
內蒙古皇甫川流域兩種沙棘水分生理生態特徵比較 -
The quantitative analysis of landscape characteristics and the ways of landscape ecological conservation for maintaining the hydrologic balance of watershed wetland were discussed
探討了量化分析景觀特徵、維護流域水文平衡的景觀生態保護的新途徑。 -
Based on existed achievements of the continental river of arid area, the paper system analysis hydro - eco characteristics, hydro - eco changes and watershed changes. a case in tarim river, the paper study hydro - eco characteristics, river evolution, evaluated eco - environment quality, explore ecology water demand, study the rational utilization of water resources in tarim river watershed. the paper is composed of nine chapters, chapter 1 include research background, main research contents, research methods and research, meaning
本論文在總結乾旱地區內陸河研究已有成果的基礎上，系統分析了乾旱地區內陸河的水文生態特徵、水文生態變化以及流域生態環境變化的基礎上，以我國最大的內陸河?塔里木河為例，初步研究了塔里木河的水文生態特徵、塔里木河的演變及其流域生態環境變化，探討了塔里木河流域的生態需水量，進行了塔里木河流域生態環境質量評價，研究了塔里木河流域水資源的合理開發利用。 -
Chapter 4, the paper analysis hydro - eco changes on the continental river of arid area how to affect lake, groundwater, vegetation, animal, partly climate, etc. chapter 5, the author study hydro - eco evolution and watershed eco - environment changes of tarim river, analysis the reason of hydro - eco changes about tarim river according to geographic characteristics and hydrology characteristics of tarim river
第四章分析了中國乾旱地區內陸河水文生態變化對湖泊的影響、對地下水的影響、對植被的影響、對動物的影響、對局部小氣候的影響。第五章根據塔里木河及其流域地理特徵、塔里木河的水文特徵，研究了塔里木河的水文生態演變以及流域生態環境變化，分析了塔里木河水文生態變化的原因。 -
Research on fractal dimension and its calculation method of watershed topographic characteristics based on gis
流域地貌形態特徵分形與計算方法研究 -
Chapter 7, based on vulnerable ecology of tarim river watershed, the author build eco - environment quality evaluation fuzzy synthetical evaluation model according to tarim river watershed characteristics
第七章從生態脆弱性的角度出發，建立了適合塔里木河流域特點的生態環境質量評價的模糊綜合評價模型，對塔里木河流域生態環境質量現狀進行了評價。 -
There are only researches about the slope loss ' s soil particle characteristics and the temporal process of hillslope agro - forestry compound system nutrient loss in the yangtze river watershed, and deficient to the mechanism and process parameters of hillslope sediment and nutrient loss of three gorges area, and there is not a preferable systematic prediction model of sediment runoff and nutrient loss also, let alone forming benefits evaluation model of hillslope harnessing measures
目前在長江流域僅有坡面流失土壤顆粒特徵和坡面農林復合系統養分流失時間過程的研究報道，而對三峽庫區坡面土壤泥沙及養分流失的機理及過程參數的獲得尚無報道，還沒有一個較系統的泥沙徑流及養分流失的預測預報模型，更談不上構成坡面治理措施的效益評價模型。 -
Analysis on the spatial differentiation of hydrochemical characteristics in the heihe river watershed
黑河流域水化學空間分異特徵分析 -
Small watershed comprehensive harness has made deep reform in soil and water conservation in china since 1980s, which has taken a successful road of soil conservation with chinese characteristics
80年代以來的小流域綜合治理使我國水土保持發生了深刻的變革，它走出了一條具有中國特色的水土保持成功之路。 -
The land use status of 1994 and 2002 in wangdonggou watershed of changwu county is analyzed, the main land use change styles and the spatial pattern characteristics of land use changes in recent years are explored
摘要對王東溝流域1994年和2002年的土地利用現狀進行了分析，揭示了近幾年來該區土地利用變化的主要類型及各種土地利用類型的空間格局變化特徵。
分享友人