The Yellow River course shifts and subdelta formation are analyzed first, and the finger-shaped geomorphology system caused by the river course shifts is also analyzed systemically. The environmental factors such as meteorology, hydrology, DEM , vegetation, soil, soil salt content, and exploitation are all described and discussed.

綜合分析了1855年以來黃河流路變遷和亞三角洲的發(fā)育演化自拍偷拍无码视频，以及在此控制之下形成的三角洲指狀骨架地貌體系日本www.在线观看；對黃河三角洲的氣象、水文九色草免费电影、地形久久久久久精品本婷婷、植被、土壤、含鹽量等環(huán)境背景特征以及人類開發(fā)活動進行了深入探討和分析国产视频一区二区三区污视频。

Soil salinization is one of the most important eco-environmental problems constraining the vegetation growth in the Yinchuan plain. It is the first obstruction for the regional agricultural production.

土壤鹽漬化是制約銀川平原內(nèi)部植被生長最主要的生態(tài)環(huán)境地質(zhì)問題在线观看国产经典福利片，也是影響區(qū)域農(nóng)業(yè)生產(chǎn)的第一障礙性問題。

In order to enable the data result all to maintain at the first quadrant, asks the arctg function to Ts/NDVI, obtains the arctgTS/NDVI remotesensing image. In same with the NDVI image processing method,carried on the unsupervised classification method to the forth principal components of the arctgTS/NDVI remote sensing image, also can get 8 kind of land cover types.

將時序SOPT-VEGETATION/NDVI數(shù)據(jù)和NOAA時間序列的Ts數(shù)據(jù)結(jié)合起來構(gòu)建Ts-NDVI空間第一区第二区日韩，為了使研究的數(shù)據(jù)結(jié)果都能保持在第一象限深爱激情综合网，對Ts/NDVI求arctg函數(shù)，得到時序arctgTS/NDVI數(shù)據(jù)日韩精品无码专区中文字幕。

3Phenological phase of vegetation in different Spatial location from 1982 to 1999 is fitted based on curve. As a result, phenological phase of forest has very coarse fitting precision.

3用曲線擬合的方法監(jiān)測了植被生長季的空間變化又粗又猛又黄又爽的视频，結(jié)果表明，森林物候期的總體擬合精度較低AA亚洲欧洲日本，草原的擬合精度好于森林的擬合精度国产一级婬片A片AAA毛片香蕉。

The composition and development of plant community in the process of natural vegetation restoration on the rehabilitated land in early years were studied by means of fixed and temporary sample plots in Yanlan experimental area.

：用固定標準地結(jié)合臨時樣地的方法對延安研究區(qū)退耕初期不同退耕年份植被恢復(fù)過程中群落形成、組成及其變化進行了研究欧美另类自拍偷在线拍。

In order to understand the water conservation function of forest in the Three Gorges Region of Yangtze River and provide fundamental basis for vegetation construction of this region,the function of canopy interception of three main forest types based on the data from fixed sample plots in Jinyun Mountain in Chongqing City were studied.

為探討長江三峽地區(qū)的森林水文作用欧美一区区三区视频，并為長江三峽的植被建設(shè)提供依據(jù)，研究重慶縉云山自然保護區(qū)3種森林類型典型林分的林冠截留作用日韩午夜在线观看网站免费下载。

In this zone, reduce or replace as much of the most flammable vegetation as possible.

在這個區(qū)域yinyuan国产精品，盡可能減少或更換最易燃的樹種。

In this paper, the soil, water, vegetation and climate factors for methane flux are analyzed and discussed.

由于學(xué)科的發(fā)展AAAA黄片免费看，近10 a在這方面的研究較之過去更為全面和系統(tǒng)最好看的免费观看视频97。

The drain in Lorong Angsa 1, Foh Sang, Luyang is still overgrown with Vegetation and grass, and it is blocked with stagnant water which is smelly and mosquitoes.

路陽和生園Lrg.Angsa 1的排水溝仍然是長滿植物和野草，并且堵塞積水欧美另类性爱网，導(dǎo)致危險的蚊蟲滋長和發(fā)出異味在线视频A片。

The indication of MD and HD, according to the fuzzy comprehensive evaluation of vegetation and soil, at Leymus chinensis +forb community, were 0.7426 and 0.5611, respectively, and at Stipa baicalensis + Leymus chinensis community, were 0.7702 and 0.59804, respectively.

根據(jù)植被與土壤相結(jié)合為指標體系的模糊綜合評價得出的指示度分別為；羊草+雜類草群落中度退化區(qū)為0.7426国产免费大黄手机在线、重度退化區(qū)為0.5611天天一级免费看；貝加爾針茅+羊草群落中度退化區(qū)為0.7702、重度退化區(qū)為0.5980AV黄色网站大全。