土默川南部主要鹽生植物與土壤環(huán)境響應(yīng)的研究.pdf

1、 分 類 號 S156.4 學(xué)校代碼 10129 U D C 631.4 學(xué) 號 08204022 土默川南部主要鹽生植物與土壤環(huán)境響應(yīng)的研究 Response of Main Halophytes and Soil Environment in South Tumochuan Pl

2、ain 申 請 人：胡文杰 學(xué)科門類：農(nóng) 學(xué) 學(xué)科專業(yè)：土壤學(xué) 研究方向：土壤資源的利用與改良 指導(dǎo)教師：李躍進 教授 論文提交日期：二〇一一年五月 Response of Main Halophytes and Soil Environment in South Tumochuan Plain Abstract Through the combined method of field investigation and labor

3、atory analysis,for the response of Main Halophytes and Soil Environment in South Tumochuan Plain, The results show that: 1.With the increase of elevation thus resulting in reduced soil salinity, thus resulting in reduced

4、 soil bulk density and soil salinity and soil alkalization degree,but soil pH value and number of species of plants are showing increasing trend. 2. With the increase of soil moisture, plants are high, coverage ,the numb

5、er of plant species or plant number are subsequently increased.When increase in soil bulk density reached 1.32g/cm3 , plants are high, cover, the number of plants and the number of plant species tend to balance. 3. Areas

6、 of severe and moderate majority of chloride salt type - the type sulfate,mildly saline areas sulfate - chloride or sulphate of soda. With the increase in the degree of soil alkalization, halophytes are highly, coverage

7、and number of plants have shown parabolic shape,but the number of plant species is the shape of an inverted parabola. With the increase of soil pH, plants are high and cover are inverted parabolic shape, number of plant

8、species are parabolic shape, but the increasing trend in number of plants. 4. The main characteristics of halophytes base ions : Like the Salsa, Salsola, Kalidium anion mainly bicarbonate and chloride-based, cation chara

9、cteristics of potassium and sodium ion-based; Tribulus terrestris Like the harmala, white thorn chloride anion mainly dominated, Cation to potassium and sodium ion-based features; Asteraceae the altai and structure of se

10、ven flowers, alkali artemisia, scorzonera mainly sulfate-based anion,cation characteristics of calcium-based; Division of tamarix chinensis, reaumuria based anionic sulfate, cation characteristics of magnesium-based; Whi

11、te danko the limonium aureum mainly CI-based anion, Cations of potassium and sodium ion-based。 Key word : Tumochuan； Southern ； Halophytes ； Soil environment Directed by： Prof. LI Yuejin Applicant for Master degree： Hu