Chapter Five: Measurement about the water environmental damage cost from field ecosystem.

第五章农田生态系统水环境损害成本的计量。

youdao

Potassium(K) balance in purple soil rice field ecosystem under rice-wheat rotation were studied on the National Purple Soil Fertility and Fertilizer Efficiency Monitored Base.

在国家紫色土肥力与肥料效益监测基地上，研究了稻麦轮作制度下紫色土稻田生态系统中钾素的平衡状况。

youdao

So if you give away a product, making it easy to get large market share, and you let everyone play on a level playing field, it should be easy to develop a thriving ecosystem.

所以如果您放弃一项产品，使其很容易获得较大的市场份额，同时您让每个人都公平地竞争，这应该易于开发出一个欣欣向荣的生态系统。

youdao

Today, the field has expanded to include the entire ecosystem involved with the promotion, support, and network of those involved with an endeavor designed to make the world a cleaner, more-equitable, healthier, and better-educated place.

FORBES: Social Entrepreneurship: A Fundamental Game Changer

This meeting saw the participation of a substantial number of scientific organizations, programmes and networks active in the field of biodiversity science and taking an interest in the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES).

UNESCO: THEMES