Experimental Research on the mass Movement in the Soil-Plant Systems

(1)植被覆盖度与植物活力遥感独立评价阐述了草皮植被覆盖度与植物活力独立评价方法，并验证了该方法在芒果树田的适用性。(2)草皮应力的遥感评价明确了草皮在水盐胁迫下的生理变化与光谱反射率的关系。引入草皮叶片叶绿素和水分随光谱反射率变化的方程，阐述了草皮应力损伤的诊断方法。(3)能量收支随索戈场取风量增加的变化。能量收支测量沿索戈场主导风向进行。能量收支随着取水的增加而变化，但在40-70米左右的新水面上已经适应。(4)水、盐、热在含砾层土壤中的运动实验证实，水、盐、热在均质砂柱和含砾层土壤中的运动是合格的。(5)基于气候-土壤条件的滴灌需水量研究。测定了滴灌条件下白菜田的潜在蒸散量、灌溉需水量、土壤水分运动和产量，探讨了滴灌条件下的最佳灌溉需水量。(6)土壤-植物系统中土壤水分运动的研究在墨西哥加利福尼亚半岛紫花苜蓿田进行了微气候和土壤物理性质的测量，分析了土壤水分运动过程。

(1) Independent Evaluation of Plant Cover and Plant Vigor by Remote SensingThe method to evaluate plant cover ratio and plant vigor of turf independently was elaborated and verified it's applicability in the sorgo field.(2) Evaluation of the Stress on Turf by Remote SensingThe relationship between the physiological changes of turf by the stresses of water & salt and spectral reflectance was clarified. Introducing the equation to estimate chlorophy1 and water content in leaf of turf as a function of spectral reflectance raate, the method to diagnose the stress damage was elaborated.(3) Variation of Energy Budget with the increment of the Fetch of Sorgo FieldEnergy budget measurements were conducted along the dominant wind direction in the sorgo field. It was observed that the energy budget had varied with the increment of the fetch, but it had adapted to the new surface around 40-70 meters.(4) Movement of water, salt and heat through the soil with gravel layrMovement of water, salt and heat through the homogenous sand column and the one with gravel layr were qualified by the experiment.(5) Studies on the Drip Irrigation Water Requirement based on Climate-Soil ComditionPotential evapotranspiration, irrigation water requirement, soil water movement and production were measured in the cabbage field under drip irrigation and the optimal irrigation water requirement was discussed.(6) Studies on the soil water movement in the soil-plant systemsMicro climate and soil physical properties were measured at the alfalfa field in the California Peninsula in Mexico and the soil water movement process was analyzed.