Pure-remote sensing information models are free of the numerous distributional parameters that are difficult to obtain in vast area. The following sections are included in the study.(1) The VCI and SVI based on time-series NDVI data are used to analyse regional drought and the following results were reached: As the vegetation growth status index, the response of VCI and SVI to precipitation was land cover type, temporal and site specified. So VCI and SVI have little information about drought when used to monitor regional drought especially in China that has a mountainous topographty.(2) Based on the interpretation of NDVI-Ts space, NDVI and land surface temperature was combined to construct NVDI-Ts space from which the TVDI (Temperature Vegetation Dryness Index) was obtained with line ratio method and normalized slopes method. When compared with the topsoil moisture measured in situ, TVDI are competent in regional drought monitoring. Illumed by the NDVI-Ts space, we combined the NDVI with day/night land surface temperature difference and apparent thermal inertia to construct NDVI-ΔT and NDVI-ATI spaces from which the DVDI and AVDI were estimated respectively with 8-day composite MODIS 〓 product and 16-day composite MODIS NDVI product.

具體包括以下幾方面的內(nèi)容：(1)VCI和SVI在干旱監(jiān)測(cè)中的作用評(píng)價(jià)：探討利用NDVI時(shí)間系列數(shù)據(jù)建立的植被狀態(tài)指數(shù)和標(biāo)準(zhǔn)植被指數(shù)評(píng)價(jià)區(qū)域干旱的可行性性爱在线欧美，研究結(jié)果表明：VCI和SVI作為植被相對(duì)生長(zhǎng)狀況指標(biāo)人av专门网站av，對(duì)降水的響應(yīng)隨著植被覆蓋類(lèi)型影音先锋全部资源在线观看、時(shí)間和空間等而表現(xiàn)出不同的敏感性无码视频A片免费看无，因此在大區(qū)域干旱監(jiān)測(cè)中久看在线视频，特別是我國(guó)這樣地形復(fù)雜多樣的國(guó)家久久99精品久久久久久67194，VCI和SVI在干旱監(jiān)測(cè)中的作用都是有限的；(2)利用TVDI評(píng)價(jià)全國(guó)干旱等級(jí)分布：結(jié)合陸地表面溫度和植被指數(shù)建立NDVI-T〓空間在线强奸，在NDVI-T〓空間物理意義理解的基礎(chǔ)上大秀视频网，分別采用線段比值法和斜率歸一化法構(gòu)建溫度植被干旱指數(shù)，并利用TVDI研究了我國(guó)2000年3～5月份各旬的干旱分布欧美日韩福利视频一区，取得比較滿(mǎn)意的結(jié)果,入级性交片。

Soil sampling is carried on on the typical slopes, and the mountain slope location that is being researched is divided into three parts: upper slope, middle slope, lower slope, and three land use ways are selected respectively in each slope location(altitude, slope gradient and aspect are same on the whole): farm land,, reforested land, waste land are taken as sampling sites.

土壤采樣選取典型坡面進(jìn)行，把研究的山體坡位分為3個(gè)部分：上坡位热99在线精品免费观看高清、中坡位欧系a片黄片、下坡位，在每個(gè)坡位(海拔高度18禁止看黄色av、坡度及坡向基本一致)分別選取3種土地利用方式：坡耕地www.fxjy888.com、人工林、荒草地作為采樣點(diǎn)国产精品免费高清在线观看。

Zinzendorf was so far unacquainted with the history and the tenets of the Bohemian Brethren, but in his charity, he granted them the desired land, on the slopes of the Hutberg in the parish of Bertlesdorf.

辛生鐸夫是迄今為止unacquainted與歷史和原理的波希米亞弟兄們鲁在线视频，但他在慈善事業(yè)，他給予他們所期望的土地日韩伊人网，就斜坡的hutberg在教區(qū)的

terrain appreciation：地形評(píng)価

terracing of the land on the slopes 坡地梯田化 | terrain appreciation 地形評(píng)価 | terrain attribute 地形屬性

terracing machine：梯田修筑機(jī)

terraced land 地埂地 | terracing machine 梯田修筑機(jī) | terracing of the land on the slopes 坡地梯田化

leaving little for the land on the other side：只有一小部分到達(dá)另一邊的土地

so they empty their moisture on the mountain slopes,|水汽在山坡... | leaving little for the land on the other side.|只有一小部分到達(dá)另一邊的土地 | From space, deserts are very conspicuous.|從太空中看,沙...