您要查找的是不是：
- Carbon and nitrogen cycling characteristics of dry farmland ecosystem on Loess Plateau. 黄土高原旱塬农田生态系统碳氮循环特征。
- Based on the water balance theory,a water cycle model of farmland ecosystem,effected by both nature and irrigation in subtropics hilly area in Eastern China was built. 以水量平衡理论为基础,定量研究中国亚热带东部丘陵区农田生态系统在自然状态下与人类影响条件下的水循环特征,探讨农田生态系统水循环过程与区域性水循环过程之间的差异。
- It is should be increased carbon sequestration by regionalizing rationally and selecting land use, managing forest ecosystem and farmland ecosystem rationally. 通过合理区划和选择土地利用方式、合理管理森林生态系统、合理管理农田生态系统等措施来增加生态系统碳汇贮量，提高陆地固碳的能力。
- Atrazine was also regarded as the most often detected herbicides in the rivers and rivulets all over the world for its heavy use in the farmland ecosystem. 农田中大量投放的水溶性较强的阿特拉津也是在各国河流、小溪等水体中检出率最高的除草剂。
- The farmland ecosystem is of some characteristics in karst area, such as fragmentary sections, strictly restricted by water, very sensitive and frail to external impact, heavy population pressure. 喀斯特区农田生态系统具有空间分布上的破碎性、受水分限制明显、对外界影响既敏感又脆弱、人口压力巨大等特征。
- Conclusions are reached as follows: (1) The total carbon sink of the farmland ecosystem in coastal China was zigzagging upward since 1981, and the total carbon emission climbing rapidly. 二者相比，碳排放明显低于碳吸收，但由主要途径农业投入导致的间接碳排放的增长速度(94%25)超过了作物生育期碳吸收的增长速度(44%25)。
- In farmland ecosystems, soil organisms are main regulators in the decomposition, nutrient mineralization and other ecological processes of soil. 在农田生态系统中，土壤动物是分解作用和养分矿化作用等生态过程的主要调节者。
- We propose to integrate the life strategy approach and trophic group classification to obtain a better understanding of nematode diversity and their functions, so as to use nematodes as effective bioindicators in farmland ecosystems. 建议通过综合土壤线虫的生活史策略和营养类群等信息，深入了解其生物多样性和土壤生态系统功能，从而更好地发挥土壤线虫对农田生态系统变化的生物指示作用。
- Gradually the surrounding farmland turned residential. 周围的农田渐渐变成了住宅区。
- The once barren hillsides are now good farmland. 昔日荒坡，今日良田。
- Output-input analysis of Nutrients in the Farmland Ecosystem with Immature Soil as Plough Layer 淮北滨海地区生土农田养分产投分析
- Water Cycle Characteristics of Farmland Ecosystem in Subtropics Hilly Area in Eastern China 中国亚热带东部丘陵区农田生态系统水循环特征
- Characteristics and Evaluation of Material Flow of Wheat Farmland Ecosystem on Loess Plateau Rainfed Highland 黄土旱塬麦田生态系统物质平衡及评价
- Research Advance of Environmental Fate and Ecological Remediation of Herbicide Atrazine in Farmland Ecosystem 农田系统中除草剂阿特拉津的环境行为和生态修复研究进展
- Research advance of environmental fate of herbicide atrazine and model fitting in farmland ecosystem 农田生态系统中除草剂阿特拉津的环境行为及其模型研究进展
- Cycling and balance of zinc in farmland ecosystem of the Jiang-Han Plain in Hubei Province 湖北江汉平原农田生态系统锌素的平衡分析
- Thirty percent of the farmland has been planted to oil crops. 百分之三十的农田已种上油料作物。
- Water is the core of a healthy ecosystem. 水是维持生态系统良性循环的根本。
- Nitrogen,phosphorus and potassium cycling and balance in farmland ecosystem at the piedmont of Taihang 华北太行山前平原农田生态系统中氮、磷、钾循环与平衡研究
