Tillage erosion is a new field of soil erosion research.

耕作侵蝕是國際上新近開展的一個(gè)研究領(lǐng)域亚洲91av网。

Here Erosion Voxel has explicit geographical meaning because it reflects corresponding mean surface soil erosion volume of each pixel in a unit time interval; at the same time it is combined with metabal1 technology.

侵蝕體元在這里具有明確的地理意義人人在线人人操，因?yàn)樗从硢挝粫r(shí)間段每個(gè)像元所對(duì)應(yīng)的地表平均土壤侵蝕體積精品激情，同時(shí)融入元球繪制技術(shù)www.日本黄色网站在线看。

In this paper some main geological hazerds in SanJiang plain region in the process of agri-caltrual development, such as soil erosion, seline-alkaline soil, flood and waterlog hazard, en- vironmental pollution, wind erosion to soil are discussed.

本文著重闡述了我國三江平原地區(qū)在農(nóng)業(yè)開發(fā)過程中出現(xiàn)的水土流失欧美日韩色一区二区三区视频、土壤風(fēng)蝕砂化久久久久精品三级三级、鹽堿土，洪澇災(zāi)害、環(huán)境污染等主要環(huán)境地質(zhì)問題国产精品视频网站免丝袜，并以實(shí)例說明了其危害

To show that there had been enough time for natural selection to work slowly, he again cited Principles of Geology and other observations based on sedimentation and erosion, including an estimate that erosion of The Weald had taken 300 million years.

為了表明有足夠的時(shí)間讓自然選擇慢慢地進(jìn)行999国产精品欧美久久久久久，他再次引用《地質(zhì)學(xué)原理》和其它基于沉積和侵蝕的觀察資料，包括對(duì)威爾德原野侵蝕為三億年的估計(jì)欧美性爱网站在线免费观看。

Photo Gallery: Erosion and Weathering Wind erosion makes these layered sandstone hills swirl in Paria Canyon-Vermilion Cliffs Wilderness Area.

意譯：侵蝕和風(fēng)化的圖片畫廊一级A片免费在线。風(fēng)蝕使這些層狀的砂巖丘陵漩渦中帕里亞峽谷，朱紅色懸崖荒野地區(qū)亚洲人妖性爱。

The erosion experiments of K, Na, Zn and Pb to refractory bricks used in blast furnaces of KISCO are performed separately and combinedly to determine the effects of temperature and time on erosion by these hazardous elements.

針對(duì)昆鋼高爐使用的耐火磚欧美婬片一级视频播放，進(jìn)行了K，Na欧美在线精品免费AAA片，Zn免费看性顶级A片，Pb單獨(dú)和混合作用的侵蝕實(shí)驗(yàn)，考察了時(shí)間91在线精品免费一区欧美、溫度對(duì)侵蝕的影響精品偷拍日韩第一页视频。

The fundamental cause of intense soil erosionpersist in erodible surface materials.Erosion control does not only reducesediment,but also erosion environment harnessing are taken as view ofdiscussion.

風(fēng)蝕水蝕交錯(cuò)帶侵蝕強(qiáng)烈的根本原因在于本區(qū)下墊面物質(zhì)的易蝕性，礦區(qū)侵蝕的治理不能僅限于減沙欧美日韩视视频免费午夜在线观看，應(yīng)以侵蝕環(huán)境系統(tǒng)整治為出發(fā)點(diǎn)激情狠狠文学网。

Roughness, surface crust, erodible fraction, stubble and time of efficacy are the indicators for appraisal. Results show that herd grazing has worst effects on soils; plowing is positive to the soils with lower erodibility and negative to sandy soils.(4) Prediction and control of wind erosion are the end of research. Two famous prediction models WEQ and WEPS were briefly introduced. On the basis of summarizing general theory and methodology for wind erosion control, some key measures are suggested for the region of Ningxia.

評(píng)價(jià)結(jié)果顯示秋季耕作、春季耕作大胆殴美视频一区、火燒激情说、放牧等活動(dòng)使農(nóng)田表層土壤風(fēng)蝕加劇欧美日韩图自拍图片大全；（4）首先介紹了美國風(fēng)蝕預(yù)測(cè)模型日本免费高清视频www，在比較全面地總結(jié)前人研究的基礎(chǔ)上，本文概括了防治風(fēng)蝕的一般原理與方法欧美性爱国产视频，針對(duì)寧夏地區(qū)狂插美女女阴道动态，除了改進(jìn)土地利用方式外，注意可風(fēng)蝕性不同的土壤應(yīng)采取不同的措施91视频人妻。

To better understand the soil erosion resistance of the different soil in south China so as to provide the necessary basic data for the forecast of regional soil erosion, planning of soil using, assessment of soil using and the potential fatalness of soil environment.

為更好的了解我國南方不同類型土壤的抗蝕性能黄片爆草中文字幕，以便為區(qū)域土壤侵蝕預(yù)報(bào)、土地利用規(guī)劃免费毛片视频网站在线播放、土地利用評(píng)價(jià)和土壤環(huán)境潛在危險(xiǎn)性評(píng)價(jià)等提供必要的基礎(chǔ)數(shù)據(jù)中文字幕-CaO|草榴神社。

The canopy of the species is strong in obstructing storms and reducing soil surface erosion and the water-holding capacity.As a result,the surface erosion is less than that on the grassed slope by 11％;the litter under the canopy has a depth of 5.5 cm on the average;and each adult tree can hold 0.3～0.69 m3 of rainfall.

楊梅樹冠和樹形有極強(qiáng)的阻截暴雨，減少地表徑流以及蓄水能力中国性交一级A片，地表徑流比草坡減少11%香蕉五月天色，樹冠下部凋落物平均厚度5.5 cm，每株成年樹可保存0.30～0.69 m3的降水量网页黄色网站可以看。